bms design guide

7/23/2019 BMS Design Guide

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BMS Design



CONTENTS

Preface

The purpose of this document is to help the users to understand how the instrumentation of air-conditioningsystem works. There are various types of instrumentation systems such as electric, electronic and direct digitalcontrol (DDC) systems, which can be used to control the air handling unit (AHU). This document includes anumber of examples with the emphasis placed on electronic and electrical instrumentation. The Appropriatemethod must be selected after studying the various conditions such as how the system will be used, likelyoperating conditions, degree of control accuracy required, consistency of all facilities, etc.Contact the Yamatake representatives for further information on actual instrumentation and design.

Part I

1. Building Management System1.1 What is building management system? ................................................................................................. 1

1.2 The Advantages of Building Management System ................................................................................ 4

2. Fundamentals of Automatic Control2.1 General of Automatic Control ................................................................................................................ 5

2.2 Automatic Control Methodology ............................................................................................................ 7

2.3 Application fo Automatic Control device ................................................................................................ 9

2.4 BMS & Automatic control design general .............................................................................................. 11

2.5 Automatic Control System Design Procedure ........................................................................................ 15

2.6 Automatic Control System Retrofit Planning Procedure ........................................................................ 17

3. Automatic Control Devices3.1 Electric Control Devices ........................................................................................................................ 19

3.2 Electronic Control Devices .................................................................................................................... 19

3.3 DDC (Direct Digital Control) .................................................................................................................. 21

3.4 Intelligent Component ........................................................................................................................... 24

4. HVAC System generals4.1 AHU Systems ........................................................................................................................................ 25

4.2 Chiller Plant Systems ............................................................................................................................ 26

5. Control Functions5.1 HVAC Automatic Control details ............................................................................................................ 27

5.2 Energy saving application ..................................................................................................................... 30

6. Typical Instrumentation Examples

6.1 Examples of Automatic Control System Instrumentation ....................................................................... 35

Part II

Guide Specification for HVAC



1

1 Building Automat ion

Building Management System (BMS) iscomprehensive system for controlling and managingvarious facilities in a building. Central monitoringsystem monitors the operating status and errors of building facilities such as air handling, chiller plant,utilities and power facilities. With the advent of computer technology and improvement in digitalcommunication technology, the automatic controlequipment of air handling can now be integratedwith centralized equipment resulting in centralizedmonitoring and control of all the facilities in abuilding.Centralized equipment is now called an IntegratedBA System, which monitors an expanding number of facilities, from lighting, elevator facilities, fire control

facilities, and security facilities such as accesscontrol or intrusion monitoring from user terminals.It has also expanded into a system called aIntelligent Building Management System whichcontrols information on the entire building and itsfacilities and ensures their effective operation.A BMS can be classified into the following fourcategories.

(1) Automatic control system

The automatic control system providescontinuous, sequential and energy-savingcontrol of process values (physical values)related to air handling, chiller plant and Utilities,

etc.In air handling systems, control of temperatureor humidity in air handling units (AHU) whichcarry out cooling/heating or ventilation isincluded. In chiller plant facilities, a number of operating unit controls and pressure controls forheat pump chillers, refrigerators and pumps areincluded.In Utilities, control of water tank level and pumpsoperation which supply clean water in buildingsor waste water treatment are included in theautomatic control system.

(2) Building Management System

The Building Management System monitors theoperating status and identifies any malfunctionsof the equipment in building at the fundamentallevel. It carries out display of functions, keeps alog and operates the system. It also controlssystem-wide facilities such as power or airhandling systems. For example, it featuresscheduled operating controls to operateequipment according to a set schedule, andpower demand control to operate each facilityand all equipment so that the power demand

agreed with utility companies will not beexceeded. The system can be upgraded to the BMS, inwhich the information managed by the BMS canbe displayed on user's PC monitors and userscan operate each facility.

(3) Security/fire control system

The security system controls access to buildingsor individual rooms using a mechanized system,features intrusion monitoring to detect intrudersin buildings, and issues alarms and videomonitoring. There are two types of accesscontrol system: using a key management box,and using a card reader. These systems assure

not only the safety of buildings but allow users24-hour access. The fire control system for detecting fire inbuildings and for preventing the spread of firecan display alarms or stop AHU by establishing areceiver specified by laws and by incorporatingthe signals into the integrated BA system.

(4) Intelligent Build ing Management System

The Intelligent building management systemcollects, stores and processes information on avariety of facilities in buildings and operatingdata to help building managers withmaintenance control work, maintenance work,

tenant billing and energy management and helpsbuilding owners with maintenance costmanagement.For example, software is included that supportsequipment ledger management, performancemanagement, maintenance schedulemanagement, metering and billing.

Figure 1 Conceptual rendering of Intelligent

Building Management System

1.1 What is Bui lding Management System?

I n t r u s i o n m o n i t o r i n g

⋅ Vertical integration of functions

⋅ Vertical decentralizationof systems

Informationmanagement

Monitoring / operation

Central control

Local control

IBMS

BuildingManagement System

Automatic control system

U s e r t e r m i n a l

( P C )

E l e v a t o r

L i g h t i n g

P o w e r

A i r h a n d l i n g

C h i l l e r p l a n t

P l u m b i n g

A c c e s s c o n t r o l

A u t o m a t i c f i r e a l a r m

S m o k e c o n t r o l

⋅ Horizontal integration of target facilities⋅ Horizontal decentralization of system

Building Management System1



2

1 Building Management System

Figure 2 Sample automatic control system of air-conditioning and Sanitary facilities

IBMSServer

FacilityReservation

FireAlarm

Lift/EscalatorSystem

SystemManagement Serve

IntelligentComponent Series

Energy Data Server

Integration Data Server

Ethernet

BACnet IP

SystemCore Server

LonTalk

SAnet

ParamatrixChiller PlantControlle

ACTIVALPLUS

BEMSBuilding Energy Management System

InfilexVC

VAV

BOX

InfilexZM

InfilexFC

ACTIVAL MININeoplate Neopanel

Client PC

InfilexGD

InfilexAC

ACTIVAL

Intelligent Building

Building Management



3


Figure 3 Sample integrated BA system

AssetManagement

HelpDesk

FacilityManagement

MultimediaPublic Display

DataStorageServe

SecurityDataServer

BACnet IP

ProximityCardReaderIR

PassiveSensor

ElectricLock

AccessCore

Controller

Wiegand

Modbus

Interface

PLC

Power meter

PipeInsertion

TemperatureSensors

DuctInsertion

TemperatureHumiditySensors

CO2Concentration Transmitter

OperatorPanel

Room Temperature

HumiditySensor

InfilexGC

ACTIVAL

BACnet

Devices

Lighting

System

3rd Party

LonTalk

Devices

OPC

Server

CCTV

SecuritySecuritySystem

Management System

IBMS

System

BMS



4


The advantages of introducing a BuildingManagement System to users of buildings includethe provision of a comfortable, safe and convenientenvironment. The advantages to owners andmanagers include reduction of operating costs bymeans of energy conservation and labor-savingover the entire building as well as bettermaintenance, leading to improvement of the value of property. The BMS clearly affords a variety of

benefits.In particular, the automatic air-conditioning controlsystem allows the creation of the most comfortableenvironment for users, prevents wastage of energyby optimum control and continuously maintainsthese advantages. Introducing BMS. The detailedbenefits of introduction are as follows:

(1) Labor-saving, efficient management

Since integration allows comprehensive controlof large amounts of data, operation of building

and facilities can be carried out by a smallernumber of people. More sophisticatedmanagement can be realized through effectiveuse of the information.

(2) Maintenance and optimization of

environment

Maintains optimum thermal environmentcondition, such as temperature and humidityincluding CO2 and dust requirements, as well as

lighting levels for individual users or productionfacilities.

(3) Resource/energy saving

Utilizing natural energy effectively and limitingunnecessary use of resources or energy, usingthe methods like controlling and maintaining adesired temperature setting accurately, or byemploying only outdoor air necessary to carry

out control in response to the load placed in thebuilding.

(4) Ensures a variety of safety features

By concentrating all information about buildingfacilities into the central unit, you can easily

identify the status of facilities, operate thefacilities and take correct countermeasures inthe event of power failure or outbreak of fire. Byintegration with the security system, you canassure the safety of building users andconfidential information with no loss of convenience.

(5) Improve convenience for building users

By integrating each facility, services andconvenience to individual users can be improved.For example, 24-hour free safe access tobuildings, simple and user-friendly setting and

adjustment of temperature or operating time andidentification of outdoor air temperature, weatherstatus and building management information. The following pages illustrate a sampleautomatic control system for air-conditioning andutilities, and a sample integrated BA system.

1.2 The Advantages of Bui lding Management System



5

This section describes the mechanism of automaticcontrol, important factors in air handling controlincluding temperature, humidity, pressure, flow rate,response, methods and how to read theimplementation diagrams as well as notes fordesigning automatic control systems.

Please note that to make the descriptions in thisdocument simpler and easier to understand, somenon-technical expressions may be used in thesections describing the theory of automatic control.

Figure 4 shows an example of manual adjustmentand Figure 5 shows an example of automatic control.As you can see in Figure 5, an automatic controlsystem consists of a sensing element, a controllerand a final control element. The sensing element isan alternative to human vision, the controller whichmakes comparisons and judgments is an alternativeto the brain and the final control element is a

substitute for the hands and feet. Automatic controlsystems always compare the actual temperaturewith the desired temperature and work to eliminatethe difference between them. To a control system, changes in outdoor air loadsuch as outdoor air temperature or solar radiationand changes in room load such as number of occupants are added as disturbance. If there is nochange in internal or external conditions, once avalve (final control element) is set to the optimumposition, the temperature is held constant. However,loads fluctuate with changing external and internalconditions, making automatic control necessary.As the figure on the right shows, when there are

changes insettingtemperature orchanges of disturbance, adelay occurs inthe system untilcontrol action is

taken and theactual roomtemperature starts changing. This is called deadtime. The time taken from start of changes in roomtemperature to re-establishment of set temperatureis called the time constant. The quality required for automatic control in suchsystems is quick response and stability. Quickresponse means to achieve the target value as soonas possible. Stability means to keep the systemwhich achieved the target constant. To designautomatic control, function and quality must bedetermined in line with the characteristics of theapplicable control and budget.

Figure 4 Manual adjustment

Figure 5 Automatic control

Fundamentals of Automatic Control2

2.1 General of Automatic Control

(appearance)Dead time

(appearance) Time constant

Necessary changesof temperature

T e m p e r a

t u r e

Dead time & Time constant

a)Manual adjustment of room temperature Desired value

25°C

Roomtemperature

20°C

20°C

In manual adjustment you look at the current room temperature, compare it with the desired value, decidewhether to open or close the valve and manually set the valve to change the flow rate of steam.As the result, the supply air temperature and room temperature change and you visually confirm the result.

b) Flow (temperatures in the diagram are examples)

Steam

Issues signals tocontroller to reducecontrol differential.

Set point

20°C

a)Automatic control of room temperature Starts operation at the signal from the controller

and changes the temperature of the control target

AHU (Room)

Outdoor air temperatureInfiltration, solar radiationChange in number of occupants

Amount of control(room temperature)

20°C

b) Flow (temperatures in the diagram are examples)

+Comparison

Control differential

Thermostat

(Temperature setting)

Detects room temperature

Steam

25°CMotorized valve

Temperature controller

Motorized valve



6

2 Fundamentals of Automatic Control

There are various methods for operating thecontroller of automatic control equipment. These areselected and adopted according to the

characteristics of the control target, the requireddegree of control accuracy and the budget available. This section describes a typical control responseused in automatic control of air-conditioning.

Control

Item Two-position (ON/OFF) control Proportional (P) Control

Mechanism

(electric control device)

Action diagram

(heating)

Response

(response when the

system is loaded in

progressive stages.)

Dead

timeShort Short to medium

Time

constantMedium to long Medium to long

Size Small Small to medium

Speed Low Low to medium

Features

･Select either of the two fixed amounts control

signal.･ The setting is just a target value.

It does not achieve the exact set point.

･If the differential is too large, the fluctuation

increases;

if it is too small, it turns on and off repeatedly, an

effect called 'hunting.'

･ The amount of operation is proportional to the

current value of the action signal.･ The setting is just a target value. An offset

(remaining differential) remains, since no action is

made to achieve the exact set point.

･If the proportional band is wide, the offset is large;

if it is too small, hunting occurs.

Applications

･Relatively small and stable system.

･Room temperature control, where it is OK if the

temperature varies around the target value

(differential).

･Control target with minimum disturbance and lag.

･Room temperature control, where a high degree of

accuracy is not required.

Figure 6.1 Action of automati c cont rol (1)

R e c o m m e n d e d c o n t r o l s y s t e m

C o n t r o l e l e m e n t

D i s t u r b a n c e

Differential

Target value

(Temperature) Amount of control

･ The position of the target valuevaries depending on the controller

P o s i t i o n

Setting dial

Diaphragm

Snap switchIncrease in temperature

Setting dial

Diaphragm

PotentiometerIncrease in temperature

Proportional band

Target value

(Temperature)Amount of control

･ The position of the target valuevaries depending on the controller

P o s i t i o n

Fully open

Fully closed

Amount of control

Time

F l u c t u a t i o n i n r o o m

t e m p e r a t u r e

D i f f e r e n t i a l

T a r g e t v a l u e

Amount of control

Time

P r o p o r t i o n a l b a n d

Offset T a r g e t v a l u e

2.2 Automatic Control Methodology



7


Control

ItemFloating Control Proportional +Integral (PI) Control

Proportional +Integral +Derivative

(PID)Control

Action diagram

(heating)

Response

(response when

disturbance is added in

the systems loaded in

progressive stages.)

Dead

timeShort Short to medium Short to long

Timeconstant

Short Short to long Short to long

Size Small to large Small to large Small to large

Speed Low Low to medium Low to high

Features

･When an action signal exceeds acertain range(dead band),itincreases/decreases the amount of operation at a certain speed.･ The setting is just a target value.It does not achieve the exact setpoint.

･Adds the integral action to theproportional action to eliminate offsetand keeps the control target at orvery near the set point

･Adds a derivative function to thePI control. Provides a fasterresponse.

Applications

･System with minimum lag and timeconstant ; disturbance can be large.･ Tank level control, etc.

･Systems with large disturbance･Room temperature control orpressure control where supply airtemperature control or high degree of accuracy is required.

･System where there aresignificant load changes and ahigh degree of accuracy isrequired.･Special constant temperature and constant humidity control,pressure control, etc.

Notes:P:

I :

D:

Proportional

Integral

Derivative

Figure 6.2 Action of Automatic Contro l (2)

R e c o m m e n d e d c o n t r

o l s y s t e m

C o n t r o l e l e m e n t

D i s t u r b a n c e

Set pointProportional

band

(Temperature)Amount

of control

A m o u n t o f o p e r a t i o n

Amount of control

Time

P o s i t i o n

D e a d b a n d

Amount of control

Time

S e t p o i n t


Off

Increase in amountof operation

Target value

Dead band

(Temperature)amount

of control

D i a p h r a g m Decrease in

amount of operation

A m o u n t o f o p e r a t i o n

(Temperature)Amount

of control

ProportionalbandSet point

Amount of control

Time

S e t p o i n t




8


According to its principle and structure, theautomatic control equipment for air handling isclassified as follows:(See Figure 7 on the next page).

• Electric• Electronic• Pneumatic• Electro-pneumatic• Direct Digital Control (DDC)

These methods are chosen for their specificcharacteristics (Figure 7, next page).With the recent digitalization of products, it is gettingmore difficult to categorize these methods simply

according to their operating principle and structure.Please note that in this document some devices areregarded as electronic due to how they are applied,even if they use built-in digital circuits. The structure,operating principle and type of each device isexplained in Section 3.

In J apan, compared with America and Europe,pneumatic/electro-pneumatic methods usingpneumatic pressure as the input signal are found inonly a few applications, such as chiller plant controlor explosion-proof systems, where large valves areused, or hospitals, where many valves are used.In electric control devices, mechanical elementssuch as diaphragms or nylon tapes are used andsensing elements and a controller are included in asingle unit. These devices are commonly used asthey are convenient to handle and feature low cost.However, it is expected that these devices will bereplaced by electronic digitized products with asimilar appearance. Microprocessors areincreasingly being mounted on electronic devices,

but DDC is becoming even more widespread.Further details on DDC are given in Section 3.3.Here, DDC is categorized as a product that obtainsvarious function and benefits by communicating withmain building management system. In this regard, itis different from electronic devices with microprocessors.

2.3 Application for Automatic Control Device



9


Electric Pneumatic Electronic Electro-pneumatic DDC

Diagramtemperature

Case: Temperature

control

Principle

･Physicaldispositions of bellows, bimetaldiaphragms ornylon tapes areused.･ The sensingelement andcontroller areintegrated in asingle unit.

･Air pressure balancing methodusing nozzles and flappers.･ Two types available: sensingelement and controller integral typeand separate type.･High accuracy types for industrialuse are also available.

･Resistance temperaturedevice Bridge circuitElectronic circuits areused･ Transmit by current,voltage signal.･Microcomputer mountedtypes and sensingelement and controllerintegral types areavailable.

･Sensing elementand controller areelectronic control.･Final controlelement usespneumatic control.Attains advantagesof both control.

･Digital circuits(microcomputer)are used.･Digital signal･Realize excellentperformance bymutualcommunicationwith centralmonitoring unit

Source of power Electricity Air Electricity Electricity / Air ElectricityAccuracy Moderate Moderate Accurate Accurate Accurate

Sensing Transmission

ResponseModerate Moderate Fast Fast Fast

ActuatorResponse

SpeedModerate Moderate Moderate

Control Method

･ Two-position･Proportional

･Proportional･Compensation

･ Two-position･Proportional･PID･Cascade･Compensation



+･Various complex

computingcontrol･Comfortable

environmentcontrol･Energy-saving

control

Function

･Indication･Central monitoring

measurement･Central monitoring

setting

･Indication･Central monitoring

measurement･Central monitoring

setting

Control Element

･ Temperature･Humidity･Pressure

･ Temperature･Humidity･Pressure

･ Temperature･Humidity･Pressure･Dew point temperature･Flow rate･Others

･ Temperature･Humidity･Pressure･Dew point

temperature･Flow rate･Others

･ Temperature･Humidity･Pressure･Dew point

temperature･Flow rate･Others

Ease of handling

Very Easy Easy Moderate Moderate Moderate

Ease of installation

Very Easy Easy Easy Moderate Easy

Flameproof Not Applicable Applicable

Applicable with Flameproof device (Installflameproof equipment)

Applicable withFlame proof device (Installflameproof equipment)

Applicable withFlame proof device (Installflameproof equipment)

Cost efficiency

Low cost, providedtheinstrumentation issimple.

Low cost, provided theinstrumentation is simple.(air source equipment is required)

More expensive thanan electric controlsystem.

Comparatively lowcost ininstrumentationwith many valves.

Less expensivethan an electriccontrol system if it is used withcentralmonitoring unit

Applications

General airhandlingSimpleinstrumentation

For flameproof When large valves are used(relatively low cost)

For constanttemperature andconstant humidityRemote settingindication

Constanttemperature andconstant humidityRemote settingindicationControl target withrapidly changingdisturbanceWhen large valvesare used

IntelligentbuildingEnergy-savinginstrumentationComplexinstrumentation

Figure 7 Control methods comparison table

Controller

SensingElement

Final ControlElement

Central F/O unit

Communicationwith centralsystem

SensingElement


Converter

Controller

Remote setting

Sensing & ControlElement

Final Control Element


Sensing & ControlElement


SensingElement

Controller


SensingElement

Controller

Remote setting



10


At first glance, diagrams of automatic controls forair-handling look confusing and off-putting. However,it is possible to understand the drawing more easilyif you learn a few rules. (Different manufacturers

tend to use slightly different rules). Normally,drawings of BMS including central monitoring andautomatic controls are composed of the followingitems.

1. Automatic control Drawing

2. Legend Table for automati c control devices

3. Valve s ize table

4. Automatic control (remote) panel dimensions table

5. Central monitoring system block di agram

6. Central monit oring system specifications

7. Central monit oring system di mension diagram

8. Central monitoring system I/O hardware interface wiring circuit diagram

9. Central monitoring system input and output list I/O table

10.BMS & Automatic co ntrol f low wi ring plan

Work segment diagram and central monitoringsystem diagrams may be added to these drawings.In particular, instrumentation diagrams in which the

functions and systems of automatic control areentered with an overview of facilities enable theviewer to fully understand the automatic controlsystem. This section contains an explanation of the symbolsused in this diagram.

In addition, some typical examples of instrumentation diagrams of air-conditioningfacilities are shown in Section 6.

Figure 8 shows a table of typical symbols, Figure 9shows the legends used in instrumentationdiagrams and Figure 10 gives an explanation usingan instrumentation example of an air handling unitcontrol.

2.4 BMS & Automatic Control Design General



11


Note : The • symbol in floor plans is intended for use in measurements.

Symbol

Instrumentationdiagram

Floor plan

T,H Room temperature (humidity) controllerElectric thermostat/humidity

controller

TE,HE,THE Room temperature (humidity) sensor (transmitter) Electronic sensor

TD Duct temperature controller Electric thermostat

TED,DTE Duct (dew-point) temperature sensor (transmitter) Electronic sensor

TW Pipe insertion temperature controller Electric thermostat

TEW Pipe insertion temperature sensor Electronic sensor

CO2 CO2 density sensor

PE Pressure transmitter

dPE Differential pressure (static pressure) transmitter

dPS Differential pressure switch

FM Flow meter

⎯ SW (Toggle) Switch The symbol shown in ( ) is used torepresent panel mounted device.

⎯ QM Set point device

⎯ R/TM/Other Relay/timer/converter

⎯ TC,TIC,HIC Temperature (humidity, others) (indicating)

controller

⎯ TR,AT Transformer

⎯ DDC,PMX DDC controller

MD(MDF/MDE) Motorized damper actuator

MV Motorized two-way valve

MVT Motorized three-way valve

BFV/BV/SVMotorized butterfly valve/ball valve/electromagnetic

valve

⎯ ⎯ Central monitoring panel

⎯ CP/RS Automatic control panel/remote panel

Figure 8 Typical symbols for automatic control drawings

Description RemarksAbbreviations



12


Legend

Power (1∅100/200 V AC, devices inside panel are omitted.)

Power (24 V AC, connected to transformer secondary side)

Unshielded cable (diagonal lines show the number of cables)

Shielded cable (diagonal lines show the number of cables)

Coaxial cable (diagonal lines show the number of cables)

Air piping

Fan interlock signal (52X contact)

ON/OFF signal ( Shows Mg.SW)

Air source (main air)

Devices mounted inside the field mounted panel

Devices mounted inside the monitoring panel

Devices mounted inside field mounted box (relay, transformer boxes, etc.)

signal to/from monitoring panel

communication cable (EIA 568 complied category 3 to 5∅ 0.5 × 4P)

General work segments

1. Power supply for automatic cont rolSupplied from a Distribution board (or power panel).

Piping and wiring work is included in the automatic control work.

2. Interlock This work involves piping and wiring up to the target devices such as power panels.

Interlocking inside the power panel is included in the power work.

3. Central monitoring input and outputPiping and wiring between the power panel, high voltage panel , distribution board and remote station

(RS) panels are included in this work.

Auxiliary relays and contacts required for remote control of power, lighting, etc. are installed inside the

respective power panel.

(See the input and output interconnection diagram)

4. Fan coilPiping and wiring between fan coil local operation switch and the main unit is included in this work.

5. Variable Air Volume (VAV)Power supply for VAV (24 V AC) is supplied from the instrumentation panel (CP ).

Piping and wiring between CP panel and VAV are included in this work.

Figure 9 Legend and example of work segment



13


1

DO DI AO AI

I/FCOM DDC

C

C

MV1

C

H

FAN

MV1

R

THEdPS

R.A

2

1

S.A

O.A

TD

BAVMV2

MDF

1

2

TR

AT

Control items

1. Room temperature controlChilled water valve and hot water valve shall be

controlled (Modulating control by PI action) by room

temperature to keep set point.

100

0

(%)

2. Room humidity controlHumidification (winter) : Proportional humidification

valve shall be controlled by room humidity to keep set

point.

Dehumidification (summer) : Proportional chilled water

valve shall be controlled as dehumidification by room

humidity to keep set point.

Under processing dehumidification, room temperature

shall be compensated by reheat valve control.

(%)100

0

100

0

(%)

3. Start-up controlOutdoor air damper remains closed for pre-cooling or preheating for a

predetermined time after AHU is started.4. Interlock controlDevices are interlocked with AHU status and season's information.

Devices : O.A damper, 2-way valves, humidification valve.

5. Defect alarm of humidification valveHumidification valve defect is detected by the temperature inside AHU

when AHU is off.

6. Communication with BMS

Figure 10 Example of Automatic Control Diagram

Hot watervalve

Chilled watervalve

Set point Temperature

V a l v e o p e n i n g

Humidificationvalve

Chilled watervalve

Set point Humidity


Hot watervalve (reheat)

Chilled watervalve



Communicationwith BMS

Communication

interface

Abbreviation for

Direct Digital Controller

Shows analogsignal input

Shows contact(digital) output

Shows contact(digital) input

Shows analogsignal output

Shows branchingof signal lines

See valve selection tablefor flow details of coiland humidification unit

Shows panelpower AC input

Shows 24VAC output

Shows the productabbreviation specifiedin the device list

Shows 24VAC output

The symbols with shadinglines represent the devicesmounted in panel

The symbols without shadinglines represent the devicesmounted in field/room

Shows number of cables

Returnair duct

Outdoor air duct

Supply air duct



14


Since automatic control plays the important role of being the 'nervous system' of buildings or facilities,sufficient consideration must be paid to the designstage of the buildings.

This section explains the system-wide plan of automatic control made at the planning stage of thebuilding or facilities and examples of procedures of instrumentation and design of individual facilities atthe actual design stage.

Identify the various

characteristics o f the building

Identify the area, use, scale, methods of management and operation, conceptand budget of the building. The importance of control changes depending on thearea or use. For example, some areas may need frost-protection control.

Identify overview of

building facilities

Identify the concept, method, system and number of units of the buildingfacilities.

Determine the conditions

for the plan

Determine the concept, effect of introduction, required quality (requiredaccuracy, etc.) and environmental conditions of the automatic control system.For example, determine which is of primary importance: temperature/humidityconditions, energy conservation, system reliability, etc.

Determine control items

and functions

Determine the control target, items to be controlled, monitored, operated and

over all function for each facility. See Sections 5 and 6.

Select the system

and control method

Select the system-wide configuration and control method to match the requiredfunction. For example, optimum start/stop control of the air handling unit can becarried out at the central monitoring unit and the other AHU controls can beperformed by DDC.

Check consis tency with

facility systems

Check whether the selected control function and control method are consistentwith the facility system. Review of the building or facilities may be necessary forthe required function for automatic control.

Check budgetCheck whether the plan is in line with the budget.

System-wide plan

2.5 Automatic Control System Design Procedure



15


Identify f acility drawing Check the device table of the facility, distribution diagram or floor plan andidentify the position of the respective facility.

Check cont rol item and

function

Check the control items, functions and accuracy required for control of therespective facility system while planning the instrumentation.

Identify facility systemIdentify devices, duct and piping systems related to the respective facility andcheck whether they are consistent with the control items. For example, return airfans, exhaust air fans, duct systems, and piping systems for air handling units.

Check final control elementsCheck whether the operable valves, dampers, humidifiers, inverters, etc. relatedto the respective facility are connected to the locations consistent with the

control items.

Determine locations of

sensors

Determine the types of sensors and installation locations (rooms, return airducts, etc.) to ensure that the sensors required for control items accuratelydetect the load on the control targets. Also take into account the space designand ambient environments.

Select the control methodDetermine your control method based on what it is you want to control, therequired conditions of quality, the driving source, need for measurement, settingand display, position, operating method, and method of management.

Design control logicWith consideration given to the elements added so far, set up the control logicbased on the required control loop, how it is planned to work, the relationshipbetween each loop, interlock, the transmission points for central monitoring, etc.

An overview of the control logic system is described in the instrumentationdiagram with an explanation of what each part does.

Select the control devicesSelect control devices in line with control logic, input/output signal, circuits andbudgets.

Select the control valvesSelect the appropriate type and size of control valves based on the liquid, flowrate, inlet pressure, pressure drop (ÆP), and pressure rating. Check whetherthe pressure, shut-off and flow rate is within the allowable range of the valve. Fordetails, see our separate document, "Valve Selection and Sizing"

Create instrumentation

diagram

Create your instrumentation diagram, automatic control device table and valvesize table.

Calculate the automatic

control panel s ize.

Based on the devices installed inside the respective automatic control panel,calculate panel size and create size table.

Create your floor planCreate your floor plan for automatic control based on the positions of facilityequipment, piping, ducts, power and distribution boards work segments, andwiring routes and your existing instrumentation diagram.

Create a detailed budgetIdentify the quantity of devices, panels, piping, wiring and installation work andcalculate the budget, including the costs of devices and panels, adjustmentcosts, engineering costs and instrumentation work costs.

Instrumentation design for individual facility



16


As with facilities, it is also important to identify theproblems and needs of the owners, users andbuilding managers and solve them successfully andreliably when fitting automatic controls.

The course of action for retrofitting is distinctlydifferent from that for installation of systems in newbuildings. An example of planning procedure andretrofitting of air handling unit controls is givenbelow.

Investigation of current

conditions

Identify current problems.It is important to precisely identify current problems and solve themreliably to make retrofit plans successful.Therefore,1. Precisely identify the problems and needs of owners, building users and building

managers.

2. Objectively determine the need for retrofitting based on a diagnosis of the facilities, etc.

3. Investigate the current system and devices to identify the operating conditions of each

function.4. Investigate the availability of parts necessary for troubleshooting. Narrow down the problems by means of these investigations.

Basic plan

Clarify the reason for renewalIn a basic plan, it is important to clarify t he benefits t o owners, users andmanagers.

1. Clarify the motives (problems, etc.) of owners, users or managers and propose

improvements, describing their effects.

2. Propose correct methods and measures to satisfy their needs.

3. Ask about the potential motives and needs of owners, users and managers and propose

solutions.

It is important to clarify t he reason to identify the intended effects of retrofitting.

Investigation for

implementation

Carry out detailed investigation to realize solutions.

Retrofit buil ding is subject to various constraints and detailed on-siteinvestigation is required before formulating an implementation plan.

(1) Building constraints such as space available, type of structure, etc.

(2) Operational constraints of building users or managers.

(3) Consistency with existing facilities.Implementation plan

Installation plan

Plan installation so as not to interfere with the day-to-day operation of thebuilding. A detai led installation plan is required before embarking on retro fi tt ing abuilding while it is in use.

(1) Consider the method of shifting to a new work system to minimize down time.

(2) Prepare "shift procedures" to ensure a successful shift from the old system to the new

system.

(3) Determine construction time periods taking care not to cause inconvenience to building

users.

(4) Make plans for material movement with consideration given to the use of the building.

Installation

OperationImprove training for the new system.The managing engineer must be able to adapt quickly to the new system.Set up a training plan for the new building management system.

(1) Training before switch over to the new system.

(2) Follow-up training after switch over to the new system. It is necessary to prepare the plan according to the new managementcontrols and implement the same.

Measuring the effects

of the new system

Comparison and verification of co st effectiveness A comparison of effects before and af ter ret rofi t i s required.

(1) Set up in advance the method of effect measurement and comparison.

(2) Effects must be checked after retrofitting.

Planning procedure for retrofit building

2.6 Automatic Control System Retrofi t Planning Procedure



17


Retrof it examples of air handling unit control

The method of retrofit varies depending on thecurrent control method. These are cases of replacing the existing control method with DDC.

•From pneumatic to DDC (Install an

electro-pneumatic converter and leave the air source

equipment in place)

Procedures

⋅ Replace the existing pneumatic controllers with DDC.

⋅ Replace sensors

⋅ Connect the existing pneumatic final control

elements to a DDC via an electro-pneumatic

converter

Advantages

⋅ The benefits of pneumatic control can be retained.

⋅ Existing final control elements can be effectivelyused.

⋅ The down time of air handling units due to

replacement can be reduced.

•From pneumatic to DDC (Eliminate all pneumatic

control devices)

Procedures

⋅ Replace existing pneumatic controllers with DDC.

⋅ Replace all sensors and final control elements.

Advantages

⋅ Elimination of air source equipment saves space

⋅ Costs are higher than when using the

electro-pneumatic converter, since all devices are

replaced.

•From electric to DDC

Procedures

⋅ Replace existing electric controllers with DDC.

⋅ Replace all sensors and final control elements.

Advantages

⋅ Better fine control and energy-saving control can be

done as compared with electric control

⋅ Existing wiring (for sensors) can be used if it is in

satisfactory condition.

•From electronic to DDC

Procedures

⋅ Replace existing electronic controllers with DDC.

⋅ Existing sensors and final control elements can be

used if they are still in good condition.

Advantages

⋅ Existing devices can be used effectively.

⋅ This approach features the lowest cost of the four

methods combined with the benefits of DDC.

Figure 11 Retrofit example of air handling unit cont rol

Measurement

(to Central)

Measurement

(to Central)

Measurement

(to Central)

Measurement

(to Central)

Cooling/heatingchangeover



18

3. Automatic Control Devices

The sensing element, controller and set point deviceare built into a single unit. This method monitorschanges in temperature and humidity via bellows ordiaphragms as mechanical displacements anddirectly controls final control elements such asmotorized valves, motorized dampers, humidifiers,compressors, etc.Electricity is used to transmit signals or as a sourceof power for mechanical movements. Both roommounted types and insertion types are used that areinstalled in ducts or piping to detect temperature,humidity, pressure, and other variables. The

structure is simple and easy to handle. Therefore,the work is simple and can be carried out atcomparatively low cost. This method is used inapplications where a high degree of accuracy is notrequired. This circuit produces either a two-position action(output signal: SPST or SPDT, etc.) or aproportional action (output signal: 0 to 135Ωpotentiometer). Integral (I) or differential (D) actionsare not supported.A power supply of 100/200 V AC or 24 V AC is used.

Figure 12 Sample instrumentation drawing for electric control

In electronic control devices, the sensing elementsand controllers are at a distance from each other.Controllers are usually placed in a control panel inmechanical room.Since an electronic controller uses electronic circuits

(digital circuits), it accepts various measured values,such as temperature, humidity, pressure, flow rate,CO2, density, etc. and provides highly accuratecontrol and indications and allows remote setting of measured values. Since the outputs aregeneral-purpose signals, converters such ashigh/low select* or ratio bias* or auxiliary devicescan be used and electronic control devices canaccommodate flexible instrumentation such asselective controls or limited controls.

∗High / low select :

Ratio bias :

A device which selects thelarger (or smaller) signal fromtwo input signals and outputs.A device which issuesoutputs, changing the start

and end points or rate of change of input signals.

3.1 Electric Control Devices

Automatic Control Devices3

3.2 Electron ic Control Devices

Motorized valve

Actuator MY5320 Three-way valve VY5303

Temperature cont roller Neostat TY900

Supply air

Air handling unit

Chilled/hot water

Outdoor air

Return air



19


The principal actions of controllers and types of input and output signals are as follows:

Input signal types Actions Output signal types

Element

Resistance

temperature device

(Pt100)

Two-position Relay contact (SPDT)

Time proportioning Open collector (voltage)

Current0 to 20mA DC

4 to 20mA DC

•P(Proportional)

•PI

•PID

Position proportional contact +feedback

potentiometer

Current 4 to 20mA DC

Voltage

0 to 10mV DC

- 10 -+10mV DC

0 to 100mV DC

1 to 5V DC

0 to 5V DC

Voltage

0 to 10V DC

1 to 5V DC

2 to 10V DC

Temperature sensors for air handling systems include room, duct, pipe andceiling mounted types. Temperature sensing elements take the form of resistance temperature devices. Resistance temperature sensors are Pt100made of platinum. Pt100 is specified by J IS and used in air handling controlswith constant temperature and constant humidity and chiller plant controlwhere a high degree of accuracy is required.

Humidity sensors are classified into room- and duct- mounted types. Themeasurement values are either relative humidity, dew point temperature anddry-bulb temperature. Sensing elements comprise the high polymer thin filmtype, which is compact and ensures high stability and quick response. Anexternal power supply is required for high polymer thin film sensors. They haveelectronic circuits inside the sensors and transmit voltage or current signals.

Final control elements are damper motors, motorized valves, humidifiers, etc.It also uses inverter or thyristors with current input.

Temperature characteristics

of platinumresistance

temperature

Sensors

Figure 13 Sample instrumentation drawing of electronic control

Room temperature sensorNeosensor

TY7043 Temperature indicatingcontrollerR36

Motor driverRN796A

Motorized two-way valveActivalVY5117

Return air

Outdoor airSupply air

Air handling unitHot waterChilled water



20


According to the definition of the Japan ElectricMeasuring Instruments Manufacturers' Association,DDC is defined as "Control in which the functions of a controller are performed by means of a digitaldevice." However, in this document, DDC indicates"a controller in which an automatic control systemand a remote station of central monitoring areintegrated, which applies digital processing using amicroprocessor." The features of DDC, its sampleconfiguration, and comparison with electroniccontroller are shown below.

Features of DDC

{Digital setting, display and calculation eliminateerrors in transmission and calculation, allowing

highly accurate control and measurement.{All input and output signals can be transmitted to

the central monitoring unit. More precise anddetailed management is possible.

{DDC allows distributed control and managementof each unit, not only for air handling units but alsofor fan coil units (FCU),VAV(Variable airvolume)units and Chiller Plant equipment.

{ Transmission functions are integrated. Only onesensor is required to carry out control andmeasurement.

{Common components and self-diagnosisfunctions enable quick response when a problemoccurs.

{LCD display set point devices and wirelesssensors can be connected, for convenience andbetter design.

{Programs can be easily added and or modifiedonsite to cope with changes in room layouts, suchas movement of partitions.

{Control functions and remote station function forcentral monitoring are included in the controllersaving space in panels.

{Easy upgrade and retrofitting since it utilizes thesame sensors and final control, other type, Thedigital transmission of input and output signals of sensors and final control elements is alsopossible.

Figure 14 Sample inst rumentation drawing of DDC

3.3 DDC (Direct Digital Control)

Multipurpose Controller Infilex GCWY5111

Central system

Room temperature/humidity sensor

HTY7043

Motorized Two-Way ValveVY5118

Steam

Supply air

Insertion temperature sensor TY7803

Air handling unit

Chilled/hot water

Damper ActuatorMY6050QY9010

Outdoor air



Exhaust air

Motorizedtwo-way valve

ActivalVY5117

Return air



21


Figure 15 Example of dist ributed DDC contr oller conf iguration

A

H U r e t u r n a i r f a n

Central monitoring unit

To other DDCcontrollers(peer communication)

Building Management Systemsavic-net series

⋅Call point⋅ON/OFF, setting, status, alarm⋅Real time/totalized data⋅Program data

DDC controller

Fan coil unit

Input interface

Control calculation unit

Output interface

Setting device for engineering

User terminal

A H U s u p p l y a i r f a n

D a m p e

H u m i d i f i e r

I n v e r t e

D a m p e

V a l v e

F i l t e r d i f f e r e n t i a l p r e s s u r e

A H U r e t u r n a i r f a n

A H U s u p p l y a i r f a n

C O 2 d e n s i t y s e n s o r

T e m p e r a t u r e / h u m i d i t y s e n s o

T e m p e r a t u r e / h u m i d i t y s e n s o

C o m m u n i c a t i o n f i l e

D a t a s e t t i n g f i l e

D i g i t a l t r a n s m i s s i o n l i n e



22


Electronic controller + RS (remote station)

D D C

RS:

DDC:

T:

H:

Remote Station

Direct Digital Controller

Temperature sensor

Humidity sensor

Figure 16 Comparison of control methods

Temperature measurement

Humidity measurement Temperature setting

Humidity setting

Fan ON/OFFController failure

Transmission line

(Digital signal)

Fan ON/OFF

Power panel

Air handling unit


Automatic control panel

Humiditycontroller

Temperaturecontroller

Air handling unit

Power panel


Temperature measurement

Humidity measurement

Temperature setting

Humidity setting

T r a n s m i s s i o n l i n e

Fan ON/OFF



23


In addition to DDC control, Intelligent ComponentSeries are Intelligent Component Products are thefield devices which contains the information of device and control conditions. The features of Intelligent Component Series, its sampleconfiguration are as shown below.

Features of Intelligent Component Series

{ This product transmits all input and output signalsto the central BMS through the dedicatedcommunication line called SA-net. More datatransfer than direct wiring is possible.

{From room temperature sensor to control valve,major products required for AHU control areavailable in its lineup.

{ACTIVAL PLUS is one of the lineup of IntelligentComponent Series. This is the motorized controlvalve with flow rate measurement and controlfunction controls chilled and hot water flow rate bydetecting flow rate not by adjusting the valveopening.

{ACTIVAL PLUS calculates flow rate by differentialpressure detected by built-in pressure sensortimes Cv calculated by the valve opening positiontimes the constant.

{Wall mounted LCD display is available to indicatemeasured pressure, temperature, calculated flowrate from ACTIVAL PLUS.

Figure 17 Sample schematic drawing of Intelligent Component Series

3.4 Intelligent Component

Multipurpose Controller Infilex GCWY5111

Central system

Room TemperatureSensor

HTY7043

Motorized

2-way valveSpring Return

TypeVY516X

Steam

Supply air

Duct Insertion Temperature Sensor

TY7803C

Air handling unit

Chilled/hot water

Damper ActuatorMY8040

Outdoor air



Exhaust air

Motorized

2-way valvewith flow ratemeasurementand controlFVY5160

Return air



25

Air handling is divided into three systems: outdoorair processing, room interiors,or room perimeters, depending on the load each airhandling unit is processing.

Appropriate AHUs are adopted for each system. There are various ways of classifying the AHUs. The following ways are amenable to automaticcontrol.

(1) Outdoor AHU

In this AHU, only outdoor air is drawn in and processed

without any return air from the system.

Total heat exchangers are added in some cases. This unit is

suitable with the combination of fan coil units, for individual

rooms of hotels or hospitals, and AHUs on each floor in office

buildings. In this type, controls are performed based on

supply air temperature and dew point temperature.

However, it is also possible to bypass all heat converters for

outdoor air cooling depending on the season.

(2) Constant air volume (CAV) AHU

This method processes room load (return air) and outdoor air

load (outdoor air), or room load only, and distributes constant

air volume via ducts. A cooling/heating coil or combination of

a cooling coil and a heating coil are used. This method

controls zones with fairly constant load characteristics and is

used extensively, from large spaces such as theaters or

shopping centers, interiors of small to medium sized

buildings, to zoned air handling in large buildings and units

on each floor. The CAV AHU performs temperature and

humidity control of rooms by controlling the amount of return

air supplied back to the room. It also performs room

temperature and CO2 density control by monitoring the

outdoor air load and controlling the intake of outdoor air.

(3) Variable air volume (VAV) AHU

based on This method further divides zones with similar load

tendency, controls these zones using individual VAV units,

and reduces the total air volume of AHU using inverters, etc.

accordingly. Compared with CAV AHUs, VAV AHUs can

control the zones better with respect to the load on each

small zone and thus enable energy conservation. Thismethod is suited for medium-to large-sized office buildings

with wide air handling areas which place importance on

running costs. VAV AHUs control each VAV room

temperature and control supply air temperature and fan air

volume accordingly.

They also controls outdoor air and CO2 condensation in the

same way as for CAV AHUs.

(4) Packaged air condit ioner

This is a room unit incorporating a compressor. There are

two types: a cooling compressor + electric heater type andheat pump type. Also there are water source types and

multi-type units which need to be installed in multiple rooms.

This method is mainly used for air handling of spaces with

load characteristics and operating times that differ from other

spaces, from computer rooms to stores or small-sized office

buildings. In packaged air conditioners, ON/OFF control to

determine the number of operating units of compressors in

response to room temperature, etc. are carried out.

(5) Fan coi l un it (FCU)

A compact air conditioner which incorporates a fan, a coil,

and a filter, etc.

Generally, it does not take in outdoor air or perform

humidifying, but simply carries out air circulation. There are

floor standing, ceiling-mounted and cassette types.

This method is suited for individual rooms in hotels or

hospitals or perimeters in office buildings.

The FCU controls room or return air temperature bycontrolling valves individually or in groups (for zones). They

can be used to optimize load sharing with air handling units

in interior or outdoor air processing air handling units as well

as to carry out energy-saving control.

4.1 AHU Systems

HVAC System generals

Supply air

To indoor AHUOutdoor air

Exhaust air

Outdoor air

Exhaust air

Outdoor air

Supply air

Return air

Outdoor air

4



26

4. HVAC System generals

A variety of chiller plant equipment is available, withdifferent operating principles and structures,including absorption chillers, heat pump chillers andboilers. Auxiliary equipment includes chilled/hotwater pumps, cooling water pumps, and coolingtowers. Classifying chiller plant types are classifiedas the closed piping method, open piping method,DHC (District Heating and Cooling) receivingmethod and individual chiller plant types of packaged air conditioners.

This document describes the closed method and theopen method. The closed method is furtherclassified as constant flow and variable flow method.In constant flow method, chilled/hot water issupplied to the whole building at a constant rate of flow controlled by three-way valves on the load sideof the air handling units. In the variable flow method,the chilled/hot water supply flow is varied under thecontrol of the two-way valves at the load side. Thissection mainly describes the variable flow method,which enables better energy conservation.

(1) Closed type piping Single-pump system

This method supplies chilled/hot water to the whole building

by a combination of chiller plant equipment and chilled/hot

water (chilled water or hot water separately) pump. The

system is simple and the initial cost is low. It is mainly usedfor small sized buildings.

The single-pump system controls the number of operating

chiller plant equipment according to flow rate and control

bypass valves to keep the differential pressure at load

constant. This system also controls peripherals including

cooling towers and heat exchangers.

(2) Closed type piping Dual-pump system

This method is also called the duplex pump or secondary

pump system. The primary pump is controlled within the

head of the chiller plant system and the secondary pump

shares the load of the head equal to the resistance of the

load side. Although the initial cost and installation space is

higher than with the single-pump system, energy

conservation can be realized by using a separate secondary

pump for each chiller plant system and controlling the

number of operating units. This method is mainly used for

medium to large sized buildings.

The dual-pump system controls the number of operating

secondary pumps according to flow rate and control bypassvalves or inverters according to differential pressure in front

and behind the pumps.

(3) Open piping Storage tank system

This system uses double-foundation slabs and tanks as

storage tanks, stores chilled/hot water from chiller plant

equipment (mainly the motorized type) in tanks and directly

supplies the water from the tanks to air handling units, etc. atthe load side. Using the off-peak system of utility companies,

this system stores heat efficiently by using cheaper off-peak

power and halting equipment operation during peak hours in

the daytime to reduce running costs and optimize power

demand. This can also be used as a backup system for heat

recovery or in the event of chiller plant equipment failure.

Although this system requires large capital investment for

installing water tanks, secondary pump to cope with higher

head, as well as anti-corrosion measures, This system saves

the running cost. Also it is cheaper, since lower capacity

chiller plant equipment can be used. This system is mainly

used for large-sized buildings and computer center.

The storage tank system controls chiller plant equipment inlet

three-way valves to store heat in storage tanks at a fixed

temperature, the number of operating secondary pumps,

bypass valves and pressure holding valves in the return pipeat load side.

4.2 Chiller Plant Systems

Chiller

Air handling unit

Chilled/Hot

water pump

Secondarypump

Air handling unit

Chiller Primary pump

Primary pumpHeat pump

Air handling unit

Secondarypump

Water charging side(at lower temperature)

Chilled water tank Water discharging side(at higher temperature)



27

This section explains details of control items described in application examples of automatic control in Section6.1.

(1) Room (supply air and return air) temperature control

⟨1⟩ Chilled water valve and hot water valve control

•Detects room temperature using temperaturesensor and provides proportional control of chilled water valves and hot water valves. In

electronic DDC methods, integral action is alsopossible.•In the single coil (dual-pipe) method, the actioneach valve is within the dotted line of thediagram on the left.

• The set point position in the double-coil(four-pipe) method is as shown in the leftdiagram. In DDC method, main set point,cooling and heating set points can be

determined as required.

⟨2⟩ Chilled water valve and hot water valve +outdoor cooling control

•Detects room temperature by using temperaturesensor and provides proportional control of

chilled water valves, hot water valves, outdoorair/return air/exhaust air damper (outdoor aircooling). In electronic and DDC methods,

integral action is also possible.•Using natural energy, provides outdoor aircooling control when intake of outdoor air iseffective.•When there is a total heat exchanger, thesystem changes to a bypass duct or operatesthe rotor intermittently during outdoor cooling.When the outdoor air satisfies the followingconditions, intake of outdoor air is effective.

i. Outdoor airtemperature

< room temperature(temperature basedcomparison)

II. Outdoor air enthalpy < room enthalpy(energy-based comparison)

III. Outdoor airtemperature

> outdoor air temperature lowlimit set point (measuresagainst humidification load)

IV. Outdoor air dewpoint temperature

< outdoor air dew pointtemperature high limit setpoint (measures againstdehumidification load)

•Provide a minimum opening for outdoor airintake to ensure correct design amount of outdoor air or CO2 density.

5.1 HVAC Automatic Control Details

Control Functions

(Single coil cooling)

Hot water valve

(Single coil heating)

Outdoor air damper

Minimum opening

Chilled water valve

Room temperature

Cooling set pointHeating set point Outdoor air cooling set point

Temperature main setting (double coil)


Cooling set point

(Single coil heating) (Single coil cooling)

Chilled water valve

Room temperature

Hot water valve

Temperature main set point(double coils)

Heating set point


5



28

5 Control Functions

Expression of outdoor air intake condition

on a psychrometric chart

The conditions of I to IV in ⟨2⟩ of the previous pageare expressed on a psychrometric chart as shownon the right.

⟨3⟩ Temperature control of heat pump package

•Performs ON/OFF control of compressorsaccording to room temperature.

(2) Room (return air) humidity control

⟨1⟩ Humidifier control

•Provides ON/OFF control of humidifier accordingto room humidity.

•Mainly used for vaporizing humidifying, waterhumidification, ultrasonic humidification and pan

humidification.

⟨2⟩ Control of humidifying valve and chilled water valve

•Provides PI control to humidifying and chilledwater valves according to room (return air)

humidity to provide humidifying anddehumidifying reheat control.•For electric control or humidifying only system,the valve action is within the dotted line•For dehumidification, when humidity increases,the chilled water valve opens. As a result, theheating coil (hot water coil) reheats tocompensate for the decrease in room (supply air,

return air) temperature.•Proportional control of humidification achieved byapplying steam humidification or steamgenerator

•In steam humidification applications, the supplyair dew point temperature can be used as thecontrol.

Dry bulb temperature

Outdoor air intake effective area

Roomenvironment

A b s o l u t e h u m i d i t y

Heating set point

S t a t u s

Heating/cooling changeover isdone manually.

Cooling set point

Temperature

CompressorCompressor

Heating Cooling


Humidifying set point

Humidity set point

Dehumidifying set point

Humidity

Chilled water valveHumidifying valve

Humidity

S t a t u s

Humidifying set point



29

5 Control Functions

(3) Supply air temperature cascade control

Changes supply air temperature set point tocontrol supply air temperature based on the

control output of room temperature and roomtemperature set point. Due to this, the impact of process lag and disturbances can be reduced.

(4) Supply air temperature limit control

This function controls supply air temperaturewithin high and low limits. This preventsoverheating during heating, temperaturestratification and condensation at outlet duringcooling.

(5) Supply air temperature set point optimization

control

In a variable air volume air handling unit,calculates optimum supply air temperature setpoint based on air volume of VAV and roomtemperature to prevent insufficient ventilationand heat output.

(6) Supply air vo lume cont rol by VAV air volume

Adds up air volume of all VAVs and CAVs tooutput the speed of rotation in line with the fanspeed characteristics of the AHU. Controls thefan speed in stages based on VAV opening. Setsminimum fan speed to ensure minimum outdoorair volume for ventilation.

(7) Warming up controlDuring warming up of air handling unit(pre-cooling/preheating), the following controlsare achieved. The time between the start of AHUtill start of occupancy is called as warming upperiod. The length of the warming up period isdetermined by calculation in the centralmonitoring unit or delay timer.

[1] Outdoor air intake disabled

(outdoor air/exhaust air/outdoor air

bypass/exhaust air bypass damper: fully

closed, return air damper: fully open)

To reduce outdoor air load, the outdoor air intake isdisabled. This reduces warming up time andreduces power consumption by the fans. However,

when outdoor air cooling is effective, outdoor airintake is performed.

[2] A humidification disabled

During warming up, there is a change in

temperature, room relative humidity tends to beunstable, and the control does not stabilize. Inorder to prevent condensation in the supply air

duct, humidification is disabled by interlock(Humidifier OFF or humidifying valve fully closed).

[3] Total heat exchanger off

Turn off total heat exchanger because outdoor airis not taken in.

(8) Interlock control while AHU fan is off

[1] Disable humidification

[2] Chilled/hot w ater valve fully c losed

[3] Outdoor air/exhaust air/outdoor air

bypass/exhaust air bypass damper fully closed

[4] Return air damper fully open

[5] Total heat exchanger off

[6] VAV fully open

(9) Communication w ith central monitoring

system

In case of DDC system, input and output signalsand calculation values can be transmitted to the

controller as required, except the followingtypical items.[1] ON/OFF of fan, status failure monitoring

[2] Filter differential pressure alarm monitoring

[3] Room (return air, supply air) temperature and

humidity measurement

[4] Room temperature and humidity setting

[5] Warming up command

[6] Monitoring of DDC controller failure

(10)Control of chiller plant system

This controls the number of operating pumps orchiller plant equipment for generating andsupplying the heat required by the load AHU.

[1] Number of operating pumps controlIn response to changes in load, it controls the

differential pressure between headers in the singlepump system, and controls the number of operating secondary pumps and bypass valvesaccording to the flow rate in the double-pump

system. Uses PID control of bypass two-wayvalves to maintain output pressure to loadconstant.

[2] Number of operating chiller/hot water

generators contr ol

In dual pump system, it controls number of operating chilled/hot water generators dependingon the load by measuring return header

temperature. This improves response to thechange in required flow rate of secondary side (airhandling units), supply water temperature to thesecondary side, return temperature and flow rate.



30

5 Control Functions

(1) Power/lighting management, control function

For effective and safe usage of power, itmeasures power, current, power factor tomonitor, control and report power receptionstatus, relay status, occurrence of groundfault/leakage of electricity and operating status of generators.

[1] Power demand control

Predicts power consumption and controlsoperation of facility equipment so that the powercontract with the utility company does not exceed.Since priority can be set to control targets such as

air handling units, exhaust air fans or chillers to bestopped in peak periods, it is possible to controlcontract power without having a significant impact

on the environment.

[2] Power factor control

This control eliminates the reactive power

generated by the reduction elements of powerfactor, such as motors for air handling, by addingand shedding the power factor compensator. Thisenables to accept power factor adjustment

discount of utility company as well as to eliminateloss of power energy. The rotational or sequentialaddition/shedding method can be selected

according to the combination of power factorcompensators with equal/different capacitance.

[3] Power failure/power restoration contr ol,

generator load distribution control

In case of power failure, generators are activatedto operate emergency equipment. If generatorcapacity remains, ordinary equipment is added

according to the predefined level. When power isrestored, the control carries out operation and

control so that each piece of equipment returns tonormal taking account of the passage of time.

[4] Lighting schedule control

Reduces lighting intensity to half or turns off lighting near windows or during lunchtime.

(2) Comfortable environment control,

energy-saving control

In addition to local automatic control, carries outcentral control using a schedule related to theentire building and data such as season, outdoorair temperature and humidity. Realizescompatibility with energy conservation and

comfort by eliminating waste (coordinationcontrol), total optimization of rooms, distribution,chiller plant systems (conjunction control) andoptimum operation based on load prediction(prediction control).

[1] Tenant calendar control / time schedule control

Sets calendar (specification of holidays) forbuilding management system to performchangeover of scheduled patterns including air

handling operation and scheduled operation of power or lighting.

[2] Optimum start and stop control

So that the room temperature becomes the set

point at the start time of the occupation of the office,calculates the warming up time and activates airhandling units automatically. When it stops, thiscontrol turns off air handling units at the optimum

time within the range where the stop of the airhandling units does not have an impact on theoffice environment. The chiller plant equipment

can be started automatically a certain time beforethe air handling unit with the earliest start time isactivated.

5.2 Energy Saving Applications

Predicted power

Target power

Sheddinglevel

Power consumption

Current

Temperaturesetting

Start/stop targettemperature

Room occupied

Target

value

Roomtemperature

Operation of air handling unit

Optimum start Optimum stop

Room occupation start Room occupation end

Reactive power

Control effectivelow limit

Power factor compensatorshedding level (TX)

Active power

Target power factor low limit (PFL)

Power factor compensatoradd level (CX)

(If power factor delays up to here,compensators are added.)

Shedding area No shedding or addition iscarried out

Calculate so that the power factor is within a certain range based on the set pointby adding and shedding power factor compensators.

If power factor leads up tohere, compensators are shed.



31

5 Control Functions

[3] Zero energy band control

Allows latitude in setting temperature and humiditywithin the range of comfortable environment and

individually sets target values of cooling, heatingand dehumidification. This type of control prevents

waste of energy due to overcooling, overheatingand mixing loss of cooling and heating, as well asthe hunting effect in which the chilled water valve

and hot water valve repeat opening and closingalternatively to maintain a comfortableenvironment without consuming extra energy. forsetting the target value refer to the thermal

environmental index such as PMV.

•Explanation•Zero energy band and action of chilledwater/hot water/humidifying valve

[4] Radiant temperature control

This control measures radiant temperature in aspace such as the perimeters of buildings where

the thermal sense (perceived temperature) of human beings cannot be only detected by roomtemperature sensors only since the change in

solar gain is large. This control changes the roomtemperature set point based on the radianttemperature. The radiant temperature sensor is

used for measurement. The sensor is installed onthe ceiling and measures radiant heat from walls orwindows without contact with walls or windows.

Responding to the changes in the environmentcaused by solar radiation or changes in theweather, it maintains a comfortable environment inthe perimeter zones.

•Existing room temperature controlEven if the room temperature is within the comfort zone,perceived temperature in the perimeters varies depending onthe weather or outdoor air temperature, and may deviate fromthe comfort zone.

•Perimeter control according to radianttemperatureDetects radiant temperature instantly and carries outcompensation. Therefore, the perceived temperature is heldconstant.

[5] PMV management program

Prevents overcooling and overheating by using an

index (the PMV index) which objectively describeshuman thermal perception (Cold to comfortable toHot) for management and setting of roomtemperature and humidity and carries out optimum

room temperature setting. This allows compatibilitybetween a comfortable room environment andenergy conservation. Select one of the comfortsensor, radiant temperature sensor, room

temperature sensor depending on how the buildingor room is used.

Perceivedtem eratures

Comfortzone

Room temperature setting

Radiant temperatureon window

Zero energyband of temperature

Heating set point Cooling set point

Cooling coil valveHeating coil valve Temperature

Zero energyband of humidity

D e h u m i d i f i c a t i o n

s e t p o i n t

H u m i d i f y i n g s e t p o i n t

H u m i d i t y

C o o l i n g

c o i l v a l v e

H u m i d i f y i n g v a l v e

Room temperature

Environmental element

Radiant temperature

Air flow

Humidity

Hot

Warm

Slightly warm

Comfortable

Slightly cool

Cool

Cold

PMV value

Human elements

Activity level

Clothing level

P M V c a l c u l a t i o n

Perceivedtemperatures

Comfortzone

Room temperature setting

Radiant temperatureon window



32

5 Control Functions

[6] Variable water volume supply pressure setting

control (VWV control)

While terminal pressure or output pressure is held

constant in the existing variable water flow control,this control reduces power for pumps responding

to the air handling load by reducing the pressure

set point during air handling low load (with lowdemand for cooling or heating) and decreasing thespeed of rotation of pumps by inverter control.Compared with the constant terminal pressure

control, annual energy conservation of about 30 %can be achieved realized.

[7] Air handing load prediction control

Based on the actual air handling load up to the

previous day, predicts consumption load for thenext day to carry out optimum start and stop of chiller plant equipment in advance. ARIMA

(Auto-Regressive Integrated Moving Average)models are used as the process for predicting theload. By carrying out optimum operation control, itis possible to minimize operating costs. Thepredicted air handling load can be used for heat

storage target of heat storage tanks and thepredicted power load can be used for power

demand control.

[8] CO2 outdoor intake control

Based on the detected value of the CO2 gassensor, controls the outdoor air damper to changethe intake of outdoor air according to the number of

occupants. It is recommended to use VAV units foroutdoor air dampers or to carry out outdoor airvolume control using air velocity sensors to ensure

sufficient outdoor air.

[9] Duty cycle control

Saves power consumption of air handling facilities

by operating air handling units intermittently whilemaintaining comfort. It is also possible to changethe stop interval.

[10]Enthalpy co ntrol

Takes in outdoor air by opening dampers and usesnatural energy effectively when the outdoor airenthalpy/temperature is lower than the room

enthalpy/temperature; outdoor air can be used forcooling. If a DDC is used, the DDC carries out thecalculation.

Pressure KPa

Inverter

Close valve

Flow rate L / min

Existing constant supply water

pressure control

Pressure KPa

Valve nearlyfully open

Inverter

Flow rate L / min

VWV control

Temperature compensationcontrol Duty cycle

Average load operatingmode

(When temperature is within targetvalues)

Outdoor air intake by enthalpy decision (Outdoor air cooling decision)

Enthalpy

Outdoor air intakeeffective area Room conditions

25°C 60%RH)

Outdoor air

Room temperature Dry bulb temperature



33

5 Control Functions

(3) Building Energy Management System

The building energy management systemcomposed of the following items; Energy DataServer, Energy Saving Applications, andIntelligent series control products. Those workstogether to realize the evaluation cycle of energyconsumption.

[1] Energy Data Server

Energy Data Server (EDS) collects and storesmeasured data such as temperature, humidity,power consumption, energy, flow rate, and devicestatus through savic-net FX building management

system.Displays the measured data as the individual or

the combination of graphs such as bar, line,laminated, spread, status, and circle to visualize

the energy consumption pattern for easy buildingperformance evaluation.

[2] Energy Saving Applications

Various types of Energy Saving Applications areused to improve energy consumption based on theresult of building performance evaluation throughEnergy Data Server. Refer to “5.2 Energy Saving

Applications” (pages from 28 to 30) for moredetails.

[3] Intelligent Component Series Products

The intelligent component series products is asensing and control device designed especially forEnergy management. The product lineup are- Room temperature sensor,- Room humidity transmitter,

- Duct insertion temperature sensor,

- Duct insertion humidity transmitter- Duct insertion dew point temperature sensor- Damper actuator- Motorized control valve (for water)

- Motorized control valve (for steam; spring return)- Motorized control valve with flow measurementand control function (for water)Intelligent Component Series uses SA-net

communication line to send and receive signal anddata. The major benefit is the reduction of wiringand installation costs.

Refer to page XX for more details.

(4) Security System

The security system comprises an accesscontrol system to automate passkeys, anintrusion monitoring system to detect and reportintruders, an image monitoring system to monitor

intruders and important facilities and aninter-phone system as an auxiliary system foraccess control. The BMS manages theinformation generated by these systems as asingle unit and interlocks with other facilities.Signal exchange.

[1] Secure status mo nitoring

Monitors the access/secure status of each roomand zone as well as the storage status of keys.

[2] Intrusion monitoring

Detects intruders via security sensors and detectsand monitors broken glasses and systemtampering, etc.

[3] Card information management

Manages a variety of information on cards used for

access control.

[4] Access/intrusion history information

management

Stores information related to access control andintrusion monitoring to carry out historymanagement.

[5] Air handling and lighting interlock cont rol

According to information of access control, turnson and off the air handling facilities or lighting

fixtures as per occupancy status to save energyand improve convenience. The intruder alarm

turns on lighting automatically to warn intrudersthat they have been detected.

[6] Elevator non-stop control

Enhances safety by controlling elevators so that

they do not stop on unoccupied floors, using theinformation of access control



34

5 Control Functions



35


(1) Air Handling Unit Control(VAV)

DDCV

UT

VSD

sets

TE

DDCV

1

O.A

Ex.A

2 2

FAN

MV

C

HC

R

THED

TED

BV

CO2

dPS

VAV

VAV

R.A

S.A

VSD

MDF,QP

MDF,QP

FAN

TR

1

AT

2

MDF,QP

DDCCOMI/F

AIAODIDO

<Air handling unit>

1. Supply air temperature control

Chilled/hot water valve and outdoor damper shall be controlled to keep

supply air temperature set point.

0

100

0

100(%) ( )

2. Return air humidity control

Humidification (winter) : ON/OFF humidifier shall be controlled to keep

return air humidity set point.ON

OFF

3. Start-up control

Outdoor air damper and exhaust air damper are fully closed and return air

damper is fully opened, humidifier is off during pre-cooling or preheating.

4. Interlock control

Devices are interlocked with AHU status and season's information.

Devices : dampers, 2-way valve, humidifier.

5. Outdoor air cooling control

Outdoor air damper shall be controlled to keep supply air temperature set

point when outdoor air intake is available.

6. CO2 control

Outdoor air damper shall be controlled to keep CO2 concentration set

point.

0

7. Supply air volume control

Necessary air volume is calculated by summing up the set point of each

VAV through DDCV communication.

Supply air fan VSD shall be controlled to supply necessary air volume as

shown below.

Abbreviation Description Product No.

AT Transformer ATY72Z

BV Motorized ball valve VY6300

CO2Insertion CO2 concentration

transmitterCY8100C

DDC Digital controller for OHU WY5111

DDCV Digital controller for VAV WY5206dPS Differential pressure switch PYY-604

MDF Damper actuator MY6050

MV Motorized 2-way valve VY5117

TE Room temperature sensor TY7043

TED Insertion temperature sensor HY7803

THED Insertion temperature sensor HTY7803

QP Auxiliary potentiometer QY9010

R Relay ⎯

TR Transformer AT72-J 1

UT Digital user terminal QY7205

8. Load reset control of supply air temperature

Supply air set point is adjusted automatically according to control status

of each VAV and AHU.


<VAV>

1. Room temperature control

VAV shall be controlled to keep room temperature set point.

0

100

0

100(%) ( )

Communication among DDC controllers

Heating Cooling

Chilled/hotwater valve

V a l v e o p

e n i n g

Outdoorair damper

Outdoor

air cooling

Min. opening


Chilled/hotwater valveOutdoor

air cooling

Min. opening V a l v e o p

e n i n g


Set point

S t a t u s

Humidity

Set point CO2

Outdoorair damper

D a m p e r o p e n i n g

Min, rotation frequency O u t p u t

Necessary air volume


Min. air volume A i r v o l u m e

Heating Cooling


Min. air volume A i r v o l u m e

Typical Instrumentation Examples66.1 Examples of Automatic Contro l Systems Instrumentation



36


(2) Outdoor Air Handling Unit Control

MV1

C

C

C

H

TED TDED

BAVMV2MV1

TD

FAN

1

2

O.A

1

R

S.A

dPS

MDF

DDCCOMI/F

AIAODIDO

TR

1

AT

2


Chilled water valve and hot water valve shall be controlled to keep supply

air temperature set point.

100

0

( )

2. Supply air dew point temperature control

Humidification (winter) : Humidification valve shall be controlled to keep

supply air dew point temperature set point.

Dehumidification (summer) : Chilled water valve shall be controlled as

dehumidification to keep supply air dew point temperature set point.

Under dehumidification process, reheat control shall be activated to keep


100

0

( )

100

0

( )


Devices are interlocked with OHU status and season's information.

Devices : O.A damper, 2-way valves, humidification valve.

4. Defect alarm of humidification valve

Humidification valve defect is detected by the temperature inside OHU

when OHU is off.

5. Antifreezing control

Chilled water valve is fully opened when the temperature inside outdoor

air duct is lower than the preset temperature.

(Starts chilled water pump forcibly if it is OFF)




BAV Motorized bore valve VY6091


dPS Differential pressure switch PYY-604


MV1 Motorized 2-way valve VY5117

MV2 Motorized 2-way valve VY5118

TD Insertion thermostat controller TY6800

TDEDInsertion dew point temperature

sensorHTY7903T


R Relay ⎯


Hot water valve


Chilled water valve

Set point Temperature(°C)

Humidification valve


Chilled water valve

Set point Dew point temperature(°CDP)

Hot water valve(reheat)


Chilled water valve

Set point Temperature(°C)

Starts chilled water pump forcibly(individual wiring)

Communication with BMS



37


(3) Air Handling Unit Control (CAV)

MDF,QP

MDF

MDF

MDF,QP

MDF,QP

TED

Ex.A

O.A1

1

dPS MV

FAN

H

C

MV

C

C

FAN

RR

BV

R

TR

1

AT

2

1

S.A

2

THED

R.A

DDCCOMI/F

AIAODIDO


Chilled water valve, hot water valve and outdoor air damper shall be

controlled to keep supply air temperature set point.

0

(%)100

2. Return air humidity control

Humidification (winter) : ON/OFF humidifier shall be controlled to keep

return air humidity set point.

Dehumidification (summer) : Chilled water valve shall be controlled as

dehumidification to keep return air humidity set point.

Under dehumidification process, reheat control shall be activated to keep


OFF

ON

0

(%)100

0

(%)100

3. Start-up control

Outdoor air damper and exhaust air damper are fully closed and return air

damper is fully opened, humidifier is off during pre-cooling or preheating.



BV Motorized ball valve VY6300


dPS Differential pressure switch PYY-604


MV Motorized 2-way valve VY5117

QP Auxiliary potentiometer QY9010

R Relay ⎯


THED Insertion temperature sensor HTY7803



Devices are interlocked with AHU status and season's information.

Devices : dampers, 2-way valves, humidifier.

5. Outdoor air cooling control

Outdoor air damper shall be controlled to keep supply air temperature

set point when outdoor air intake is available.

6. Heat exchanger control

Intermittent timer control shall be activated when outdoor air intake is

available.


Hot watervalve


Outdoorair damper

Outdoorair cooling

Min. opening


Chiller watervalve

Humidifier Chilled watervalve

Set point Humidity

S t a t u s

V a l v

e o p e n i n g


Hot water valve(reheat)


Outdoorair damper

Outdoorair cooling

Min. opening


Chiller watervalve



38


(4) Fan Coil Unit Control (zone contro l)

CHS

CHR

UT

(x3)

TE

R

TR

MV

C

HC

C

HC

FAN

C

HC

C

HC

FAN

C

HC

C

HC

FAN

DDCF


DDCF Temperature controller WY5205MV Motorized 2-way valve VY5120

R Relay ⎯





2-way valve shall be controlled to keep room

temperature set point.

2. Fan ON/OFF operation

ON/OFF operation of fan coil unit is done by user

terminal (UT).


Devices are interlocked with FCU status.

Devices : 2-way valve.4. Heating/cooling changeover

Heating/cooling changeover command comes from

BMS.


(5) Fan Coil Unit Control (DDC)

CR

CS

HS

HR

UT TE

FAN FAN

C

C

C

H

C

C

C

H

DDCFDDCF

MVV

MVV

MVV

MVV


DDCF Temperature controller WY5205

MVV Motorized 2-way valveVY5502

+MY5560C




2-way valve shall be controlled to keep room


2. Fan ON/OFF operation

ON/OFF operation of fan coil unit is done by user

terminal (UT).


Devices are interlocked with FCU status.

Devices : 2-way valves.

4. Fan coil unit interlock by network communication

Group operations of fan ON/OFF, valve control and air

volume changeover are done by network

communication.5. Communication with BMS

・Display・Setting・ON/OFF

・Air volumechangeover


LAN cable

・Display・Setting・ON/OFF・Air volume

changeover


LAN cable



39


(6) Heat Pump Package Control (water humidifi cation)

MDF

FAN

H.P

BV

R

S.A

R.A

O.A

1

THE

2

TR

1

AT

2

DDCCOMI/F

AIAODIDO


AT Transformer ATY72ZBV Motorized ball valve VY6300

DDC Digital controller for package WY5111


THERoom temperature and

humidity sensorHTY7043


R Relay ⎯


ON/OFF compressor shall be controlled to keep room


2. Room humidity control

ON/OFF humidifier shall be controlled to keep room

humidity set point.

3. Start-up controlOutdoor air damper is fully closed and humidifier is off

during pre-cooling or preheating.


Devices are interlocked with PAC status and season's

information.

Devices : O.A damper, humidifier.


(7) Package Control (steam humidification)

MDF

LT

SCR

S.A

O.A

R.A HE

COMP

C

DX

FAN

R

1

THE

2

TR

1

AT

2

DDCCOMI/F

AIAODIDO



DDC Digital controller for package WY5111

LT Limit controller L4029E


THERoom temperature and

humidity sensorHTY7043


R Relay ⎯


ON/OFF compressor and proportional SCR shall be

controlled to keep room temperature set point.

2. Room humidity control

Steam humidifier shall be controlled to keep roomhumidity set point.


Devices are interlocked with PAC status and season's

information.

Devices : O.A damper, SCR, steam humidifier.

4. Overheat protection of heater

Electric heater is forced off if the temperature in PAC

casing increases abnormally.




Humidifier



40


(8) Chiller Plant System Control (1-pump system)

TEW

dPEW

TEW

FM

TEW TEW

TEW

TEW TEW

TEW TEW

TEW TEW

HC C

MV

Temperature

Temperature

Temperature

Temperature

Chiller

Chiller

Chiller

Chiller

TR

PMX

COM

I/F

AIAODIDO

1. Sequence control of chiller

(1)Chiller number control

Number of chiller is calculated according to load flow rate and sequence

control is done followed with setting table as shown below diagram.

NO.1,2,3,4

NO.1,2

NO.1,2,3

NO.1

(2)Rotation control

Rotation function shall be incorporated in this sequence control to

equalize running time of chiller.

(3)Skip control

Defected chiller shall be excluded from sequence control by

automatically.

(4)Number calculation compensation

Running number of chillers shall be adjusted by supply temperature

(above set point) and return header temperature (below set point).


DC DC 24V power supply RYY792D

dPEW Differential pressure transmitter J TD

FM Electromagnetic flow meterMGG10C/MGG11

MV Motorized 2-way valve VY5113J

PMXDigital controller for chiller plant

systemWY2001Q

TEW Pipe insertion temperature sensor TY7830B


2. Header bypass valve control

Proportional header bypass valve shall be controlled as shown below,

to keep constant the differential pressure between headers.

(However, bypass valve is fully opened when the pumps are all off.)

To avoid sudden increase in pressure, bypass valve is forced open

before the batch ON command or the increase in number of operating

equipment.

SP0


NO.1 rated capacity

N o . o f c h i l l e r o p e r a t e d

NO.1,2,3 rated capacity

NO.1,2 rated capacity

Flow rate

Bypass valve opening


Differential pressure


:Monitored by BMS



41


(9) Chiller Plant System Control (2-pump system)

HC C

(x4)

VSD

MV

TEW

PEW

TEW

TEW

FM

TEW

TEW

TEW

TEW TEW

TEW

TEW

TEW

Temperature

Temperature

Temperature

Temperature

PMXCOMI/F

AIAODIDO

Chiller

Chiller

Chiller

Chiller

TR

VSD

PMXCOMI/F

AIAODIDO

1. Sequence control of chiller

(1)Chiller number control

Number of chiller is calculated according to load energy and sequence

control is done followed with setting table as shown below diagram.

NO.1,2,3,4

NO.1,2,3

NO.1

NO.1,2

(2)Rotation control


equalize running time of chiller.

(3)Skip control

Defected chiller shall be excluded from sequence control by

automatically.

(4)Number calculation compensation

Running number of chillers shall be adjusted by supply temperature

(above set point) and return header temperature (below set point).

2. Sequence control of secondary pump

(1)Secondary pump number control

Number of secondary pump is calculated according to load flow rate and

sequence control is done followed with setting table as shown below

diagram.

NO.1,2,3,4

NO.1,2,3

NO.1

NO.1,2


DC DC 24V power supply RYY792D

FM Electromagnetic flow meterMGG10C/MGG11

MV Motorized 2-way valve VY5113J

PEW Pressure transmitter J TG

PMXDigital controller for chiller plant

systemWY2001Q

PMXDigital controller for dual-pump

systemWY2001P

TEW Pipe insertion temperature sensor TY7830B


(2)Rotation control


equalize running time of pump.

(3)Skip control

Defected pump shall be excluded from sequence control by

automatically.

3. Pressure control of supply water

VSD and bypass valve shall be controlled by supply water pressure as

shown below.

0

100

SP

0

100

4. Estimated end pressure control during low load operation

Set point of supply water pressure is adjusted automatically by load flow

rate, in order to reduce conveyance power during low load operation.

0


NO.1 rated capacity

N o . o f c h i l l e

r o p e r a t e d

NO.1,2,3 rated capacity

NO.1,2 rated capacity

Load energy

NO.1 rated capacity

N o . o f c h i l l e r o p e r a t e d

NO.1,2,3 rated capacityNO.1,2 rated capacity

Load flow rate

VSD output(%)Bypass valve

Pressure

SP of pressure

Rated water volumeof 1 pump

Rated water volumeof 2 pumps

Flow rate


:Monitored by BMS

:Communication with BMS




42


(10) System Configuration Diagram

MS

PC

KB

LCD

<Client PC >

CLP

P

SCS

RS

RS

RS

SMSDSS

User PC

RS

SCS

PMX

DDC

ZM

UT

UT

DDCV

DDCF

BMIF

To SCS

RS

kVA

UPS

P

Referential Outlook and Dimension

MSKB

PC

CLP

1400

8 0 0

7 0 0

LCD

SP SP

700

5 0

1 9 5 0

400

220 530

5 0 0

AC/GC V A

Individual grounding(class D)

Primary power failure alarmBattery low alarmFailure

Fire AlarmPanel Fire Signal

Substation,generator

Power supply statusSwitching breaker of generator-commercial power

Electric work

DistributionCircuit

Relay timercircuitfor power failure/

restoration judgment

SystemControl Panel

Relay Circuit

Power supply to ※ mark

Power supply to ※ mark

To SCS(Power supply statusof AC/GC and generator)

<Building Management System> <System Control Panel> <UPS>

3kVABackup 10 minutes


IPv4/v6 Network(BACnet)

NC-bus/LC-bus

Individual Wiring

RS-232C

Substation

Power

Panel

DistributionPanel

AuxiliaryPanel

Lighting SystemInterface

Sensor

Flow meter

Sensor・Setter

AHU C ontrol

Valve

Valve

Chiller Plant Control

Sensor・Setter

ValveFCU Control

SC-bus

Sensor・Setter

VAV

VAV C ontrol

Building Multi SystemInterface

Converter(Ethernet/RS-485 conversion)

RS-485

Controller, Power Meter

OtherManufacturer's

BACnet Devices

HVAC・Plumbing・Electricity

NC-bus/LC-bus

Individual Wiring

Individual Wiring

RS-232C

Individual Wiring



43


Building Management System Hardware Specifications (1/2)

Symbol Name Description Specifications

PC Client PC Display and operation of system managementinformation, setting and changing of variousprograms are done through Web browser.A mouse is used for screen selection and operation.

CPUMain storage capacityHDDCD-ROM drivePowerOSWeb browser

J AVAvm1.4 embeddedSVG Viewer3.0 and aboveembedded・XGA supportAdobe Reader 6.0 andabove embedded

Mouse(MS)

: Pentium4 3.0GHz and above: 512MB and above: 40GB and above: 24-speed and above: AC100/200V +/-10%, 50/60Hz: WindowsXP: IE6.0

: optical

LCD(PC)

Color GraphicDisplay

As the main display unit, LCD displays various listsand graphics.It can display graphics, data simultaneously withmulti windows.

SizeDisplay colorsDisplay characters

Resolution

: 17 / 19 inch type: 16190000 colors and above: Alphanumeric, Kana,Hiragana, Kanji (J IS level 1st&2nd), symbols and drawings

: 1024x768 / 1280x1024 pixels

DSS Data StorageServer

Performs the overall system management, periodicaldata collection, data storage, data processing, etc.It also controls input/output of peripheral devices.

CPUMain storage capacityOSHDDMax. data points

Power

: 32-bit: SDRAM 256MB: Linux: 40GB (24-hour run): 2000/5000/10000/20000/30000 objects

: AC100/200V +/-10%, 50/60Hz,50VA

SMS SystemManagementServer

Performs display, setting and operation of the overallsystem management information (graphics, points,programs, etc.) through web browser software of theclient PC.

CPUMain storage capacityOSHDDMax. data points

Power

Number of graphics

: 32-bit: SDRAM 256MB: Linux: 40GB(24-hour run): 2000/5000/10000/20000/30000 objects

: AC100/200V +/-10%, 50/60Hz,50VA

: graphics

SCS System CoreServer

Performs data transmission with RS and DDC, manages point data and schedule control.It also stores trend data.

CPUMain storage capacityOSMax. data pointsCommunication linePower

: 32-bit: SDRAM 128MB: Linux: Max. 1000 objects/unit: 4 lines/unit: AC100/200V +/-10%, 50/60Hz,70VA

CLP Color Printer Prints various data as follows.1. daily, monthly and yearly reports2. trend data3. various lists (alarm dashboard)4. maintenance messages5. screen

Printing methodPrinting colorPaper sizePower

Temperature conditionConnection

: Semiconductor laser: Full color: A4: AC100/200V +/-10%, 50/60Hz: 10-35℃ : IPv4/v6 network

IPv4/v6Network

Backbone network of BMS for data transmission.It has transmission protocols such as IEIEj/pBACnet, HTTP, etc.

Communication method

Communication speedWiring

: Ethernet, TCP/IP protocols, IPv4 or IPv6

: 10Mbps, 100Mbps: 100BASE-TX, 100BASE-FX

UPS UninterruptiblePower System

Provides uninterruptible power to client PC, serversand other necessary terminal transmitters.

InputOutput

Time backupBattery typeBackup method

: AC/GC V A: AC V A: minutes: Compact size sealed lead-acid: Online power system

NC-bus New ControllerBus

Transmits data between BMS and terminaltransmitters.

Communication methodCommunication speedWiring

: Private communication: 4800bps: IPEV-S 0.9-1P (twisted paircable)



44


Building Management System Hardware Specifications (2/2)

Symbol Name Description Specifications

LC-bus LonTalk ProtocolController Bus

Transmits data between BMS and terminal transmitters.


: Lon-Talk protocol: 78kbps: Lan cable, connector joint (category 3-5 0.5φ*4P in conformity with EIA568)

SC-bus Sub ControllerBus

Transmits data between ZM and terminal transmitters.


: Private communication: 4800bps: Lan cable, connector joint (category 3-5 0.5φ*4P in conformity with EIA568)

RS Terminal Transmitter

Installed in local place and transmits data with BMS.RS and input/output devices are connected withindividual wires.

Input/output pointsPowerCommunication method

: Refer to point summary: AC100/200V +/-10%, 50/60Hz: Privatecommunication/Lon-Talk

DDC AHU Controller Performs AHU control and transmits data with BMS. Input/output pointsControl itemsPowerCommunication method

: Refer to point summary: Refer to control diagram: AC100/200V +/-10%, 50/60Hz: Privatecommunication/Lon-Talk

PMX Chiller PlantController

Performs control of chiller plant system and transmitsdata with BMS.

Input/output pointsControl itemsPowerCommunication method

: Refer to point summary: Refer to control diagram: AC100/200V +/-10%, 50/60Hz: Privatecommunication/Lon-Talk

ZM Terminal Transmitter

Coordinates with BMS to manage DDCV (VAV controller) and DDCF (FCU controller).

Connectable numberPower


: 50 units(DDCV, DDCF)/ZM: AC24V +/-15% /AC100V-200V, 50/60Hz

: Privatecommunication/Lon-Talk

BMIF Building MultiInterface

Communicates between building multi system andBMS, transmits data of ON/OFF command, status,alarm, temperature setting and measurement.

InputCommunication methodCommunication procedureCommunication speedPower

: Max. 64 systems: Polling/Selecting method (equal to J ISIIX5002)

: 4800bps: AC100/200V +/-10%, 50/60Hz,20VA

RU-L LightingInterface

Communicates between lighting system and BMS, transmits data of ON/OFF command, status, andschedule management.

InputCommunication methodCommunication procedureCommunication speedPower

: Max. 64 systems: Polling/Selecting method (equal to J ISIIX5002)

: 1200bps: AC100/200V +/-10%, 50/60Hz,20VA

DDCV VAV Controller Performs VAV control and transmits data with BMS. Power


: AC24V +/-15% /AC100V-240V, 50/60Hz

: Private communication

DDCF FCU Controller Performs FCU control and transmits data with BMS. PowerCommunication method

: AC100V-240V, 50/60Hz: Private communication

UT DigitalOperating Unit

Communicates with BMS, DDC, etc., transmits data of ON/OFF command, temperature display, setting, overtime running request schedule adjustment.It is possible to restrict on the access by using apassword.

Operating targetDisplayOperationPower

: 4 zones/unit: LCD: Touch panel: AC24V +/-15%, 50/60Hz,1.5VA



45


Building Management System Software Specifications (1/3)

1. System overview2-3. Display(1) Multi-window display

Max. 3 windows can be displayed simultaneously.(2) Sequential screen display

Group list, trend graph, control screen are displayed automatically in apredetermined sequence besides graphics.(Max. 100 screens/sequence, Max. 20 sequences)

Time display and screen hardcopy (J PEG format) can beset also.(3) Screen scroll function

This function helps to scroll the display of window vertically andhorizontally when the range for display exceeds the window size.

(4) New alarm displayDisplaying the latest alarm contents in new alarm display area.

(5) Graphic displayGraphic displays the point information in the building.Screen size can be enlarged or reduced randomly.Graphic displays the point status by symbol color change, figurationswitching, animation at the time of status change or alarm occurrence.

The associated graphic is forced to display at the time of alarmoccurrence.Live-wire symbol is used for electricity receiving and transformingequipments, etc.• Animation: displays point status and alarm occurrence by symbol

motion.• Live-wire: color indication of piping, wiring.Graphic displays measured value・totalized value by numeric value,gradation, meter indication, level symbol, which are updatedperiodically.• Gradation: color indication of temperature distribution• Meter indication: displays measured value by analog meter• Level symbol: level indication of measured valueGraphic can also realize that• Screen transition• Photographic data insertion

(6) Graphic modification This function helps to• change the layout and name of the room• change background color• change and plug in various symbols• generate a new graphic

(7) Point list displayPoint information is listed by group, alarm occurrence, ON status, OFFstatus, maintenance, trouble.

It is possible to operate ON/OFF command and setting on multiplepoints simultaneously in the same list, as well as outputting a list in PDFfile and printing.

(8) Time program list This function helps to display the ON/OFF time setting of registeredtime programs in a list.Representative point status (normal/alarm, ON/OFF) can be used todisplay the status of time program.

(9) Point search This function helps to display and print the necessary point informationin list format, according to the attribute information of the point.

(10)Point guidance This function provides detail comment (such as the treating method orcontact address) automatically at the time of alarm occurrence.

(11)Point details displayPoint detail information is displayed from graphic screen directly.It includes point information, point registration, runtime data, trendgraph for the past 48 hours, schedule of status and measured value.

(12)Screen history displayIt is used to display the 20 previously displayed screens after login.

(13)User menu settings The screens displayed frequently are registered in the user menu forquick selection.

The associated screens can be grouped into categories and displayedhierarchically according to equipment type / floor for each user.Furthermore, it is possible to display any 3 screens on the system menudisplay area as shortcuts.

(14)Infilex (IP type) point list screen displayI/O information can be displayed on the point list screen by accessingthe IP controller directly.

Building management system (BMS) is set in ,performs efficient

management, monitoring, control of various equipments such as chiller plant, HVAC, plumbing, electricity receiving and transforming, lighting,fire-prevention, etc., in order for laborsaving, energy saving, security andcomfortable environment.BMS is a risk distribution system that even a trouble occurs at a part of BMS, the performance of other part is hardly affected.• BMS is composed of BA servers and client PC. OS of the servers is

Linux with consideration for stability, capability and better security.• IPv6 network configuration responding to future extension.• Any PC can be man-machine interface (monitor) as long as it has web

browser software and appropriate configurations.(Refer to hardware specifications for the details.)

• User can modify the graphics easily.

2. Basic functions

2-1. Common functions(1) Operating methods

Operating by mouse and keyboard.

(2) Operator access controlMax. 200 pairs of user ID and password can be registered with variousaccess limitation (operable/display only/undisplayable) to eachfunction.User authentication is not necessary for the client PC assigned aspecial IP address

(3) Segregation name settingsPoints can be divided up to 32 segregations (by equipment, system,place, building, etc.) with different access limitations on point operation,alarm display, buzzer sound for each user.Screen display and buzzer sound are easy to set.

(4) Module status monitoring The status of system modules is monitored constantly. Alarm is notifiedwhenever a trouble occurs.

(5) Remote unit status monitoring The status of remote units is monitored constantly. Alarm is notifiedwhenever a trouble occurs.

(6) Register maintenanceMaintenance-registered points are removed from monitoring, control,schedule targets. An indicator is shown on the screen during

maintenance.(7) Alarm transmission

Outputs point alarm by contact output.

2-2. Monitoring(1) Status monitoring

It is possible for the user to monitor point status, measured value andtotalized value constantly.

(2) Alarm monitoringIt is possible for the user to monitor alarm occurrence, recovery of points and system devices constantly.

The latest alarm information is displayed in new alarm area along withindicator blinking, buzzer sound (4 kinds), voice message (90 kinds),forced graphic display and forced guidance display when point alarmoccurs.

(3) ON/OFF mismatch / status mismatch monitoringAlarm occurs when• Point status does not change when a fixed period has elapsed after

the issue of ON/OFF command from BMS.• Point status does not match the ON/OFF command from BMS.

(4) High/Low limit monitoring of measured valueAlarm occurs when the measured value deviates from the specifiedrange of High/Low limit value.

(5) Batch setting on High/Low limit monitoring of measured value It ispossible to perform batch setting on the set points of High/Low limitmonitoring of multiple measured values.

(6) Deviation monitoring of measured valueAlarm occurs when the deviation between measured value and setpoint exceeds the specified value.

(7) Batch setting on deviation monitoring of measured valueIt is possible to perform batch setting on the set points of deviationmonitoring of multiple measured values.



46


Building Management System Software Specifications (2/3)2-4. Operation(1) Individual ON/OFF operation・set point change

It is possible to operate individual ON/OFF and change set point byselecting a point from associated graphic or list.When multiple ON commands are issued simultaneously, the ONcommands will take effect one after the other with a fixed time delay.3-action operation (operate-confirm-run) is executed for importantequipment instead of usual ON/OFF operation (operate-run). Theconfirmation message gives a caution to operator in the 'confirm' step.

(2) Preset of totalized valueIt is possible to preset the totalized value and runtime.

(6) Chiller optimum ON/OFF control This function refers to the estimated optimum ON/OFF time of the AHU,starts the chiller earlier than the optimum start time of the earliest AHU,and stops the chiller earlier than the optimum stop time of the latestAHU within the same chiller system. Earlier start and stop time is up to120 minutes against target time.

(7) Duty cycle control This function calculates the optimum stop time of AHU, etc.to perform duty cycle control while maintaining a comfortableenvironment.

(8) Cold air intake controlProportional control of cold air intake damper is executed when outdoorair cooling is effective, which is evaluated by the comparison of outdoortemperature, return (room) enthalpy and dry-bulb temperature

(9) Optimum room temperature setting This function calculates PMV value and change the set point of roomtemperature automatically for energy-saving.PMV value can be set up according to operating mode (energy-saving/normal/comfortable).PMV value is calculated according to room temperature, windowradiant temperature (measured value/calculated value), room relativehumidity, air draft (set value), activity (set value varying with time),amount of clothing (set value varying with month).

(10)Duty cycle program with power demand function This function compares the estimated demand value with the targetpower to perform duty cycle control of AHU, etc. while maintaining acomfortable environment.It is possible to set different temperature value for normal day andholiday.

2-5. Print(1) Screen print

It is possible to print and spool the currently displayed screen by using aspecified printer.

3. Control functions

3-1. Common(1) Calendar control

It is possible to specify normal days, holidays, special days 1 andspecial days 2 till for 2 years ahead.

(2) Time program controlON/OFF operation of the equipment registered in time program isexecuted automatically in a predetermined schedule.

There are 2 kinds of schedules, that is, priority schedule and executionschedule.ON/OFF time is specified for the 4 kinds of calendar days in a priorityschedule and the execution schedule for the next 1 week from thecurrent date can be created according to calendar information andpriority schedule.ON/OFF time change can be executed on execution schedule.It is possible to set ON/OFF operation up to 8 times a day.

(3) Batch setting of time program controlIt is possible to perform batch setting on multiple priority schedules.

(4) Schedule composition This function is used to generate a single time schedule from multipleschedules for the ON/OFF operation of the communal equipment.

(5) Interlock control This function helps to operate the target equipment to a desired status(ON/OFF, etc.) with the conditions of point status change or alarmoccurrence, etc.

(6) Numeric operation This function performs the four arithmetic operations for totalized valueand measured value, and outputs the calculation result to a point.

(7) Logical operation This function performs the logical operations for the input status of multiple points and outputs the result to a point.

(8) Add-subtract operation of totalized valueIt is possible to perform add-subtract operation on multiple totalizedvalues and output the result to a data point.

3-3. Electricity(1) Power failure control

Alarm notification is given through buzzer sound and blinking of thepower failure indicator, status mismatch alarm is withheld and generalcontrol retention is performed during commercial power failure.However, fire process and manual operation are available.

(2) Sequential start control when generator worksStartup is output one by one to the registered equipments whendetecting startup of the generator.

(3) Generator load distribution control This function keeps the power load within the power capacity of thegenerator. Power is connected to the units in order of priority level (15levels).

(4) Power restoration controlPower restoration control is executed by automatic or manual powerrestoration command after commercial power restored.ON/OFF command is executed according to point status before powerfailure and general control retention during power failure.

(5) Power demand monitoringEstimating power demand value of 30 minutes interval.Alarm occurs if the estimated power demand or real power demandexceeds the target power with the blinking of indicator.Synchronization with the supply demand meter is based on the externalinput or screen operation.

(6) Power demand control This function estimates the usage of power at intervals, decides thenecessity of interruption/recovery of load in order of priority level (15levels).It is also possible to increase or decrease the analog output ratio of theinverter.

(7) Power demand history This function helps to store the power demand control results as historydata, display the target value and demand value.

• Daily data: past 13 months at 30 minutes interval• Monthly data: past 13 months at 1 day intervalHistory data can be output in CSV format.

(8) Power factor improvement controlIt is the function to improve power factor by recover or interrupt thephase advance capacitor, according to the values of power factor(reactive power) and active power.

3-2. HVAC(1) Seasonal changeover control

This function performs the seasonal changeover (mode switching onthe season) automatically at the specified date.

There are 4 modes which are fan, cooling, heating and cooling/ heating.Forced manual changeover operation is also available.

(2) Batch setting of seasonal changeover controlIt is possible to perform batch setting on multiple seasonal changeover.

(3) Set point schedule controlIt is possible to change the set value of the set point automaticallyaccording to the schedule per annum.

(4) Batch setting of set point scheduleIt is possible to perform batch setting on multiple set point schedules.

(5) Optimum ON/OFF control (pre-cooling, pre-warming control) This function estimates the attribute of room temperature raise/fall toperform the optimum ON/OFF control of AHU.Holiday compensation, consecutive holidays compensation and abnormal data compensation are available.• Holiday compensation: early start of the AHU if it did not work in the

previous day.• Consecutive holidays compensation: early start of the AHU according

to the days the AHU has been switched OFF.• Abnormal data compensation: learning is not performed when

measured input is abnormal.

3-4. Fire-prevention(1) Fire process

Alarm notification is given through buzzer sound, blinking of the fireindicator and display on alarm dashboard with input of fire.It is also possible to stop the associated equipments (AHU, etc.)automatically by the input fire signal.

The priority of fire process is higher than other controls at this time.Furthermore, fire cancellation is done only by manual operation.



47


Building Management System Software Specifications (3/3)3-5. Security(1) Security interlock

This is a event program that stops AHU, etc. with the security status of security system automatically.

(5) User data processing This function helps to output the gathered trend data in CSV formatautomatically or manually.

(6) Overtime running This function regulates the overtime running time on client PC.Request operation of overtime running can be performed from the useroperable equipment or client PC for each request unit.

The log of overtime running request is stored, that is also used forsummary process.In addition, it is possible to output the list in PDF format.

(7) Meter reading This function collects the meter reading values of power, gas, watersupply at the specified date and calculates the monthly or bimonthlyconsumption, which is used to list and display the meter reading resultof each meter, system or tenant.Abnormal value detection according to the comparison with the lastconsumption ratio and manual modification are available.It is possible to output the list in PDF and CSV formats.• Data points: Max. 200/500/1500 metersIn addition, output of a meter reading result file before report print canbe used for confirmation.

(8) Real time trending This function supports high-speed storage of measured value at

1/2/3/5/10/30 seconds interval and display of time series trend graph. Atrend graph can display max. 8 data points.

The limitation on the number of analog points, data, graphics is shownas below.• Max. 100 points/P-SCS, Max. 20 points/SCS• Max. 6000 data/point• Trend graph:40/100 sheets

(9) Runtime displayIt is possible to output totalized runtime of the equipment to a datapoint.

(10) Overtime totalizationIt is possible to output totalized overtime of the equipment to a datapoint.

4. Data management functions

4-1. Data management(1) Runtime monitoring and ON/OFF counting

Runtime and on-off cycle count of the equipment are totalized anddisplayed in the point operation screen. The equipment that exceeds acertain value of runtime/On-Off cycle count is displayed in the list('Maintenance Notification' in indicator area).In addition, it is possible to output the list in PDF format.

(2) Daily report, monthly report, yearly reportIt is possible to display the measured value and totalized value in thespecified format.(Daily report: pages, monthly report: pages, yearly report: pages)

The maximum value, minimum value and mean value can also bedisplayed if necessary.In addition, it is possible to output the report in PDF formatautomatically or manually.

The time range for manual print is shown as below.• Daily report: past 13 months• monthly report: past 10 years• yearly report: past 10 yearsPoint data can also be output in CSV format.

(3) TrendingMeasured value, totalized value and time series change of equipmentoperation status are stored for a fixed period and can be displayed ontrend graph (broken line) and bar graph (bar graph/laminated graph).

Trend graph: sheets.1 sheet can display max. 2/8 points. (Max. 2/8 axes in 1 graph)

Trend data is stored as follows.• 1 minute data: past 40 days• 1 hour data: past 13 months• 1 day data: past 10 years• 1 month data: past 10 years

(4) Alarm dashboardAlarm dashboard displays the alarm, status change, operation settings,unacknowledged alarm in order of year/month/day/hour/minute/secondin a list.It is possible to extract and display part of the list by type filtering. It also

supports string search, time search and comment input.In addition, it is possible to output the list in PDF format automatically ormanually, as well as CSV format.



48




49


Point Summary Li st (reference only) (1/2)

OPERATION DISPLAY ANALOG

S E T T I N G

O N / O F F ,

S T A T U S

O N / O F F

S T A T U S

A L A R M

T E M P .

H U M I .

O T H E R S

<Substation>

VCB 1RS-1 LV panel 1

Over current 1RS-1 LV panel 1

Low voltage 1RS-1 LV panel 1

Current 1RS-1 LV panel 1

Voltage 1RS-1 LV panel 1

Power factor 1RS-1 LV panel 1

Power 1RS-1 LV panel 1

Reactive power 1RS-1 LV panel 1

Integral power 1RS-1 LV panel 1

Auto/manual 1RS-1 LV panel 1

<Generator>

Start/stop 1RS-1 GE panel 1

MCCB 1RS-1 GE panel 1

Over current 1RS-1 GE panel 1

Over voltage 1RS-1 GE panel 1

Major failure 1RS-1 GE panel 1

Minor failure 1RS-1 GE panel 1

Auto/manual 1RS-1 GE panel 1

<Lighting system>

1F lighting 1RS-1 1L-1 20

2F lighting 2RS-1 2L-1 20

<Chiller plant system control>

R-1,2 Chiller batch ON/OFF 1CP-1 1

R-1 Chiller No.1 1CP-1 R-1 1 1

R-2 Chiller No.2 1CP-1 R-2 1 1

CP-1 Primary pump No.1 1CP-1 1M-1 1 1

CP-2 Primary pump No.2 1CP-1 1M-1 1 1

Chiller outlet temperature 1CP-1 Sensor 2

Chiller inlet temperature 1CP-1 Sensor 2

Supply header temperature 1CP-1 Sensor 1

Return header temperature 1CP-1 Sensor 1

Return temperature 1CP-1 Sensor 1

Instantaneous flow rate 1CP-1 Flow meter 1

Totalized flow rate 1CP-1 Flow meter 1

I N P U T / O U T

P U T

S I G N A L S O U R C E

A U T O M A

T I C

C O N T R O L P

A N E L

E Q U I P M E N T

S Y M B O

L

POINT NAME T O T

R E M A R

K S



50


Point Summary Li st (reference only) (2/2)

<Outdoor air handling unit control>

OHU-1 Outdoor air handling unit (1F) 1CP-2 1M-2 1 1

Supply air temperature 1CP-2 Sensor 1 1

Supply air dew point temperature 1CP-2 Sensor 1 1

Outdoor air duct temperature 1CP-2 Sensor 1 1

Filter alarm 1CP-2 Sensor 1

Humidification valve defect 1CP-2 Sensor 1

OHU-2 Outdoor air handling unit (2F) 2CP-1 2M-1 1 1


Supply air dew point temperature 2CP-1 Sensor 1 1

Outdoor air duct temperature 2CP-1 Sensor 1 1



<Air handling unit control>

AHU-1 Air handling unit (1F hall) 1CP-2 1M-3 1 1

Return air fan 1CP-2 1M-3 1 1


Return air humidity 1CP-2 Sensor 1 1

Return air temperature 1CP-2 Sensor 1

CO2 concentration 1CP-2 Sensor 1 1

Supply air fan VSD speed 1CP-2 1M-3 1

Return air fan VSD speed 1CP-2 1M-3 1

Room temperature 1CP-2 Sensor 5 5



VAV 1CP-2 DDCV 10 10

<Fan coil unit control>

Fan coil unit (1F) 1CP-2 DDCF 10

Room temperature (1F) 1CP-2 DDCF 10

Fan coil unit (2F) 1CP-2 DDCF 10

Room temperature (2F) 1CP-2 DDCF 10

<Measurement>

Outdoor air temperature and humidity 2CP-1 Sensor 1 1

OPERATION DISPLAY ANALOG

S E T T I N G

O N / O F F ,

S T A T U S

O N / O F F

S T A T U S

A L A R M

T E M P .

H U M I .

O T H E R S

I N P U T / O U T

P U T

S I G N A L S O U R C E

A U T O M A T I C

C O N T R O L P

A N E L

E Q U I P M E

N T

S Y M B O

L

POINT NAME T O T

R E M A R

K S



51


Hardware Interface (1/2)

I/O itemsON/OFF, status, alarm ON/OFF, status

Instantaneous contact output Input Instantaneous contact output Input

Remote unit

(RS)

(DDC)

(PMX)

Wiring

Local

Equipments

Electric,

HVAC,Plumbing,

others

Remarks

a-a contact

1.Contact for status confirmation uses auxiliary relay(52X).

2.Remote auxiliary relay(CX, TX) has spark killer.

a-a contact

1.Contact for status confirmation uses auxiliary

relay(52X).

2.Remote auxiliary relay(CX, TX) has spark killer.

I/O itemsON/OFF, status, alarm ON/OFF, status ON/OFF, status（lighting）

Continuous contact output Input Continuous contact output Input Remote control pulse output

Remote unit

(RS)

(DDC)

(PMX)

Wiring

Local

Equipments

Electric,

HVAC,Plumbing,

others

Remarks

1.Contact for status confirmation uses

auxiliary relay(52X).

2.Remote auxiliary relay(CX) has spark killer.

1.Contact for status confirmation

uses auxiliary relay(52X).

2.Remote auxiliary relay(CX) has

spark killer.

Operationcircuit

24VAC/DC

CX

ON OFF

TX 52X

IN COM

DI

52

OFF TX

52X

RemoteLocal

52X52

51

ON CX

51X

COM

DI

IN

Operationcircuit

24VAC/DC

CX

ON OFF

TX

IN

52X

COM

DI

52

OFF TX

52X

52X52

51

ON CX

RemoteLocal

Operationcircuit

24VAC/DC

CX

ON OFF

52

OFF

52X52

51

ON

CX

52X

IN COM

DI

51X

COM

DI

IN

RemoteLocal

Operationcircuit

24VAC/DC

CX

ON OFF

IN

52X

COM

DI

52

OFF

52X52

51

ON

CX

RemoteLocal

BlueBlue

RedWhite

ON OFF

DI

Locals witch

OFF ON

AC24V1.5A

R e m o t e c o n t r o l

t r a n s f o r m e

R e m o t e c o n t r o l

r e l a y



52


Hardware Interface (2/2)

I/O itemsStatus, alarm Status Alarm TOT(pulse) input TOT(pulse) input

Contact input Contact input Contact input No-voltage contact pulse No-voltage contact pulse

Remote unit

(RS)

(DDC)

(PMX)

Wiring

Local

Equipments

Electric,

HVAC,

Plumbing,

others

Totalizing

1.Input

12VDC, 10mA

2.Input condition

ON time over 30ms

OFF time over 30ms

ON+OFF time over

100ms

OFF

ON

Totalizing(for water

meter)

1.Input

12VDC, 10mA

2.Input condition

ON time over 30ms

OFF time over 30ms

ON+OFF time over

100ms

OFF

ON

Remarks

1.Input

No-voltage a continuous

contact

2.Circuit voltage, current

DC12V, 10mA

1.Input

No-voltage a continuous contact


DC12V, 10mA

I/O itemsAI AI AI AO

Temperature input Current Input Voltage input Current Output

Remote unit

(RS)

(DDC)

(PMX)

Wiring

Local

Equipments

Electric,

HVAC,

Plumbing,

others

Remarks

1.Input

Pt100Ω, JPt100Ω


DC1V, 1mA

3.Range

0~50℃, -50~100°C

-20~80℃, 50~200℃

1.Input

DC4~20mA

2.Input impedance

300Ω

3.No isolation

1.AIV1 input

1~5VDC

Input impedance 500Ω

2.AIV2 input

0~5VDC

Input impedance 5K Ω

3.AIV3 input

-5~5VDC

Input impedance 110K Ω

4.No isolation

1.Output signal

4~20mA DC

2.Output voltage

24V DC

3.Max. resistance

600Ω

4.With isolator

Status contactAlarm contact

52X

IN COM

DI

51X

COM

DI

IN COM IN

TOT TOT

Pt100Ω resistance

IN

52X

COM

DI

Status contact

IN

51X

COM

DI

Alarm contact

over 30msover 30ms

over 100ms

over 30msover 30ms

over 100ms

Transducer Transmitter 4~20mA



53


Valve Selection Table (reference only)

General

This table shows selected valve conditions for all control valves that are installed in a project.

Valve selection table

System Fluid Flow rate Pi Delta P CV Bore(A) Remarks

<Chiller plant system control>

Chilled water bypass 2-way valve W2 2000 150.0 113.2 100

Chilled water flow meter W 2000 150

<Outdoor air handling unit control>

Chilled water 2-way valve W2 300 30.0 38.0 40 2sets

Hot water 2-way valve W2 120 30.0 15.2 25 2sets

Humidification 2-way valve S 30 200.0 80.0 1.1 15 2sets

Steam shutoff valve S 15 2sets

<Air handling unit control>

Chilled water 2-way valve W2 200 30.0 25.3 40

Hot water 2-way valve W2 80 30.0 10.1 25

Humidification 2-way valve S 15 200.0 80.0 0.5 15

Steam shutoff valve S 15

<Fan coil unit control>

Chilled water 2-way valve W2 20 30.0 2.5 20 20sets

Hot water 2-way valve W2 20 30.0 2.5 20 20sets

Fluid W2 : Water(2-way valve), W : Water, S : Steam

Unit Fluid W2, W : Flow rate[l/m], Delta P[kPa] Fluid S : Flow rate[kg/h], Pi, Delta P[kPa]

Control Panel Table (reference only)

General

This table shows panel name and size, location, also including controlled subjects by the panel.

Control panel table

Size for Reference(mm)

W H D

System control

panelStand 700 1950 400 DSS, SMS, etc. 1F security room

1CP-1 Wall mounted 700 1300 250 Chiller plant system control 1F machine room 1

1CP-2 Wall mounted 700 1300 250 OHU-1, AHU-1, FCU 1F machine room 2

2CP-1 Wall mounted 700 1100 250 OHU-2, measurement 2F machine room 1

1RS-1 Wall mounted 700 700 250Substation and generator

monitoring, lighting1F electric room

2RS-1 Wall mounted 700 700 250 Lighting 2F EPS

W : Width H : Height D : Depth

TypeName Controlled Subjects Location



Guide Specification


Energy Management SystemSecurity Systemand,Control Devices



1

Guide Specifications for HVAC

1. GENERAL

Building Management Systems and Instrumentation for HVAC shall

comply with the conditions stated in this specification in terms of Hardware, Software, and its installation, test, and commissioning.

1.1. Scope

A. Supply all hardware and software necessary to meet the specified

project requirements.

B. Supply hardware layouts, connections, control loop configuration ascontrol flow diagrams.

C. Specify the detailed design for all distributed control system input/outputpoints.

D. Design, supply and install all panels, and data communication networkcables including all hardware.

E. Supply and install all interconnecting cables between control panels,controllers, operator terminals and peripheral devices.

F. Prepare entire specifications for all items supplied by the supplier fromother purchased products.

G. Supply supervisory specialists and engineers at the project site to assistin any phases of system installation, start-up, test and commissioning.

H. Prepare necessary operator and technician training programs

I. Prepare as-built documentation, software, all DDC control logic and all

associated support documentation on approved media which accuratelyrepresents the final system.

1.2. Submittals

System supplier shall submit system control sequence drawings withengineering design to the project.

System configuration diagrams.

Input/Output point and alarm point list.

All system wirings and interconnections between components.

Hardware specifications and instructions, Software specifications, andapplication user guides.



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1.3. References

The latest standards as stated below are followed as references.

ASHRAE American Society of Heating, Refrigerating and Air

Conditioning Engineers

European CE Mark: EMC Directive 2004/108/EC and 89/336/EEC

1.4. Warranty

Warranty shall include all costs for labor, parts, transportations,expenses within one year from actual completion and acceptance by theowner Warranty shall cover.



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2. PRODUCTS

2.1. HARDWARE REQUIREMENTS

2.1.1. General

A Building Management System (BMS) shall be built on a server-clienttype system architecture. All necessary information and systemdatabase are archived in system servers. A PC with web-browsingsoftware installed shall perform as a Client PC, solely for browsing thecontents of all archived data as a supervisory terminal. BMS shall usethe latest technologies such as IP/Linux/XML/ SVG/J AVA as its platform.

2.1.2. Server

System Servers shall comprise of several servers on server-client

system structure. The number of system servers shall differ dependingon the system requirements. Servers shall include Server for SystemManagement and Server for Data Storage. Servers shall be built on thefull open platform using Linux system.

2.1.2.1. Server for System Management

A Server for System Management shall carry out distribution of information for the display, setting, and operations of the managementinformation of the overall system (data point, program, etc.) through theWeb browsing software installed in the Client PC. Server shall support

access of up to 5 client PCs simultaneously.Server shall be provided with dedicated hardware using full openplatform Linux system and come with 32 bit CPU with main storagecapacity of SDRAM 256 MB. Auxiliary memory unit HDD shall be 40GB in 2.5 inch size. Maximum BACnet objects manageable shall be30,000 objects. Server shall back up data up to 72 hours.

2.1.2.2. Server for Data Storage

A Server for Data Storage shall store necessary database for BMS. Theserver shall manage the data transmitted from an Advanced Building

Controller as BMS databases and provide the data to display or print thehistorical trending graphs as well as daily, monthly, and yearly reports.

Server shall be provided with dedicated hardware using full openplatform Linux system and come with 32 bit CPU with main storagecapacity of SDRAM 256 MB. Auxiliary memory unit HDD shall be 40GB in 2.5 inch size. Maximum BACnet objects manageable shall be30,000 objects. Server shall back up data up to 72 hours.



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2.1.2.3 Server for Energy Management

A Server for Energy Management shall store necessary database for thepurpose of energy consumption management.

2.1.2.4 Server for Security Data

A Server for Security Data store necessary database for the purpose of security.

The server shall have the storage capacity of 1 million access history.

Server for Security Data shall comply with the specifications as follows:

- OS: Windows®XP

- Internet Browser: Internet Explorer 6 or later

- CPU: Pentium® IV processor, 3 GHz and above

- Main storage capacity: 512MB and above- Loading function: IPv6, J ava®vm 1.4 and above, XGA,

Acrobat®Reader, IE6.0 and above

- HDD capacity: 40GB and above.

- CD-ROM: 1 unit

2.1.3. Server Redundancy

System Servers shall be capable of dual-redundant system.Dual-redundancy shall be configured by setting 2 servers respectively

with one to one warm-standby system. The system runs 2 serverssimultaneously and when trouble occurred on either one server, anotherone will backup immediately.

Servers carry out the backup of critical data such as Monitoring Data andHistorical data. When trouble occurred below measures shall beapplied to backup data.

Assume there are 2 servers “Server A” and “Server B”. When “ServerA” information cannot be browsed from Client PC due to the networktrouble, it is judged as “Server A: Down”, and then “Server B” (normally

Standby) becomes Active, and the Client PC connection is switched to“Server B” automatically.

When network trouble is solved and “Server A” is restored, (Client PC isrestored to be able to browse server information), as “Server A: Active”,automatically carry out restorations (acquiring trending data during

“Server A” is down from Advanced Building Controller and copying thedifference between Client PC settings and data for scheduled copy).

After restored as “Server A: Active”, Client PC still maintain theconnection to Server B. Operator has to re-login to switch theconnection to Server A.



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2.1.4. Client PC

A Client PC shall be the PC with web-browsing software for accessingthe database achieved and stored in System Servers. Client PC is

basically installed in the supervision room to supervise the wholebuilding. It supervises the following features:

- Monitoring: status, alarms, and measurement of each facility

- Operation: remote ON/OFF control

- Data output: operating status, alarm status, and measuring data

- Data analysis: operating status, alarm status, and measuring data

Up to 5 Client PCs shall be able to access Server simultaneously.

Client PC shall comply with the specifications as follows:

- OS: Windows®XP/Vista

- Internet Browser: Internet Explorer 6 or later

- CPU: Pentium® IV processor, 3 GHz and above

- Main storage capacity: 512MB and above

- Loading function: IPv6, J ava®vm 1.4 and above, XGA,

Acrobat®Reader, IE6.0 and above

2.1.5. Printer

Any type of printer with USB connection available shall be able toconnect the network of the system. Printer driver shall be compatiblewith Windows XP or later.

2.1.6. Communication Network

BMS shall have the capability of full system integration using BACnet IP,LonTalk, Modbus, or OPC.

For the communication network between Client PCs and each server,hyper text transfer protocol (http) shall be used.

Uses BACnet IP between each system server and advanced buildingcontroller.

Internet Protocol version 4 (IPv4) or Internet Protocol version 6 (IPv6)shall be selectable for both communication network depending on therequired specifications.

LonTalk protocol shall be used for the communication betweenAdvanced Building Controller and the DDC controllers, such asmulti-purpose controller.

MODBUS protocol shall be used for the network connection with powermeters and controllers using RS485 communications.

OPC shall be used for the system integration with IBMS. Using PCbased OPC server, BMS shall be able to connect with other systems as



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IBMS by converting BACnet protocol to the one communicable via OPC.

2.1.7. Controller

2.1.7.1. Advanced Bui lding Controller

An Advanced Building Controller shall consolidates the DDC groups andperforms different types of integrated control including energy saving.

The controller shall be capable of autonomous distributed control to

continue the operation even if another part of the system is shut down.

Collects various management information from the DDCs and transmitsinformation to Server for System Management. Stores the collecteddata for forty-eight (48) hours.

The controller shall come with 32 bit CPU with main storage capacity of SDRAM 128 MB and Compact Flash® 64MB. Maximum Data pointsmanageable shall be 1,000 points.

Uses IP (Ethernet® 10 BASE-T/100BASE-TX) 1 channel tocommunicate with the higher level of the system. The communicationline of controllers consists of LonTalk®protocol Controller bus) 4 lines (2

channels). This controller shall back up the data up to 72 hours.

2.1.7.2. Direct Digital Controller (DDC)

DDC controller shall carry out the controls for each and every device. The control operations shall be self-sustaining to enable the continuous

control even if the other parts of the system are down. Datatransmission shall be made via the Client PC and the Advanced BuildingController. The Client PC will receive, for example, the changes insetup values, and send back the data of control results.

DDC lineups several types as follows:

A. Multi -purpose Control ler

the controller designed as a multipurpose controller for several devices.Consists of a basic unit and connectable I/O modules. The number andtypes of the modules shall be flexibly changeable corresponding to the

control or management to fit in various applications.

B. AHU Contro ller

the DDC controller specially designed for AHU control. The controller

has inputs and outputs suitable for AHU control and its software shall befreely editable in response to the applications.

C. I/O Modules



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I/O modules consist of the following types:

- Module with 8 digital inputs

- Module with 16 digital inputs

- Module with 8 relay outputs- Module with 16 relay outputs

- Module with 8 relay outputs + 8 digital inputs

- Module with 4 remote control relay outputs

- Module with 4 totalizer pulse inputs

- Module with 16 totalizer pulse inputs

- Module with 2 voltage/current outputs

- Module with 4 voltage/current outputs

- Module with 4 voltage/current inputs

- Module with 4 temperature inputs

- Module with 2 voltage/current inputs + 2 temperature inputs

- Module with 1 modutrol motor outputs

- Module with 3 modutrol motor outputs

D. Zone Manager

A Zone Manager shall carry out the management of VAV controllers, FanCoil Unit Controllers, and AHU Controllers. Up to 50 controllers are

manageable by one unit of Zone Manager.

E. VAV Controller designed specifically for Variable Air Volume unit control. The VAVcontroller shall be provided as a damper actuator with DDC controllerinside that controls a VAV unit in a building HVAC system. Ratedtorque of VAV damper actuator shall be selectable from 5Nm of 10Nmdepending on the torque required.

F. Fan Coil Unit Controller

provides digital control of fan coil units. In addition to start/stopoperation, valve control, and fan speed changeover, the controller shall

provide setback and interlock operations with outdoor air handler.

2.1.7.3. Chiller Plant Control Packaged Controller

Chiller Plant Control Packaged Controller is a direct digital controller(DDC) specifically designed for sequential control of chiller plantequipment of building HVAC systems. These packaged controllerscomprise of 2 types; a pump controller and a chiller controller. Each

packaged controller consists of a combination of a control module, abase module, I/O modules, and a LCD operator interface.



8


The Control module performs arithmetic operations and exerts thechiller/pump controls.

The plug-in type I/O modules are the input/output sections of the

controller and load communications to connect with the control module. The Base module enables power supply and communication interface tothe I/O modules. I/O modules include the followings:

- Module with 4-20 mA DC current inputs

- Module with 4-20 mA DC current output

- Module with one floating output with nominal 135ohm feedbackpotentiometer

- Module with five potential free contact inputs

- Module with four potential free contact (normally open) outputs

- Module with two potential free contact inputs and one 24VDC voltage

instantaneous contact output The Base module supplies power to I/O modules and carries out

communication connections and address settings for I/O modules. Thebase module also functions as a terminal block for the I/O modules.

The I/O modules shall be plug-in type, which can be plugged directly intothe base module back panel and can be easily detached withoutdisconnecting their wiring.

The LCD Operator Interface is a display setting device having a colortouch-panel LCD. Users shall be controlled with access levels andpasswords. This interface shall also be used as a parameter-settingdevice by service personnel.

2.1.7.4. Access Controller

Provide control device for access control equipment of the securitysystem. The controller collects data on access control, monitorsoperating status of access control equipment, and interfaces with otherfacilities such as lighting and air conditioning facilities.

This device shall use Wiegand protocol for the control of Security carddevices.

The controller shall be connectable to the security system via 10BASE-T or 100 BASE-T of Ethernet protocol. Sends access controldata to the system, receives commands from the terminal devices aswell as from the system to control electric lock, and thus performssecurity management of a whole building.

The controller composed of a basic module and I/O modules such asModules for Wiegand signal, power supply for electric keys, passivesensors and other devices,



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2.1.9. Field Devices

2.1.9.1. Sensors

Supplier shall provide the following types of sensor depending on the

specific system requirement.

A. Room Temperature Sensor

Uses resistance thermometer sensor for temperature sensing element.

Designed suitable for room temperature sensing. The sensing rangeshall be from 0°C to 60°C with ±0.3°C sensing accuracy.

B. Duct Insertion Type Temperature Sensor

Uses filterless probe resistance thermometer sensor for temperaturesensing element.

Designed to be installed to air ducts and suitable for supply or return airtemperature detection. The sensing range shall be from 0°C to 60°C

with ±0.3°C sensing accuracy.

Sensor housing shall be dust-proof and splash-proof (IP54) for higherenvironmental resistance and installable using dedicatedquick-detachable bracket for easy installation.

C. Pipe Mount Type Temperature Sensor


Detects water temperature of piping. Sensing range of the sensor shall

be from -50°C to 200°C with sensing accuracy of ± 0.05 + 0.002temperature measured.

D. Ceiling Mount Type Temperature Sensor


Designed to be installed to narrow opening of ceiling. The sensingrange shall be from 0°C to 60°C with ±0.3°C sensing accuracy.

E. Room Type Humidi ty Transmitter

Uses polymer capacitive humidity sensor for humidity sensing element. The sensing range shall be 0%RH to 100%RH with ± 3% sensingaccuracy. Designed suitable for room humidity detection.

F. Duct Insertion Type Humidi ty Transmitter

Uses polymer capacitive humidity sensor for humidity sensing element. The sensing range shall be 0%RH to 100%RH with ± 3% sensingaccuracy. Designed to be installed on air ducts and suitable for supplyor return air humidity detection.



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Sensor housing shall be dust-proof and splash-proof (IP54) for higherenvironmental resistance and installable using dedicatedquick-detachable bracket for easy installation.

G. Ceiling Mount Type Humidi ty Transmitter

Uses polymer capacitive humidity sensor for humidity sensing element. The sensing range shall be 0%RH to 100%RH with ± 3% sensingaccuracy. Designed to be installed to narrow opening of ceiling.

H. Dew-point Temperature Sensor

uses a polymer capative humidity sensor for a dew point sensingelement. Comes either with or without built-in temperature sensingelement. The sensing range is from -40°C to 60°C DP with ± 1°C

sensing accuracy.Sensor housing shall be dust-proof and splash-proof (IP54) for higherenvironmental resistance and installable using dedicatedquick-detachable bracket for easy installation.

I. Radiant Temperature Sensor

measures infrared radiation at the perimeter on a wall. The sensingrange shall be from 5°C to 50°C with ±2°C sensing accuracy. Outputsignal shall be 1 to 5 V DC. Uses 1 to 5 V DC as output signal linearlycorresponding to 5°C to 50°C.

J. Carbon Monoxide (CO) Concentration Transmitter

detects concentration of Carbon Monoxide and sends a real time value.

The sensing range shall be 0 to 60 ppm with sensing accuracy of ±5%FS. Uses 4 to 20mA signal as output signal linearly corresponding to 0to 60 ppm.

K. Duct Insertion Type Carbon Dioxicide (CO2) Concentration

Transmitter

detects the concentration of CO2 in ducts and other sites using

Non-dispersive infrared absorption method and transmits a real timevalue to other devices. The sensing range shall be 0 to 2000 ppm withsensing accuracy of ±(50 ppm + 5% readout). Uses 1 to 5 VDC signalas output signal linearly corresponding to 0 to 2000 ppm.

The transmitter shall be installable using simple mounting bracket foreasy installation.

The device shall be able to calibrate using CO2 service bag containingCO2 zero gas supply.



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L. PMV Sensor

detects the combination of air temperature, mean radiant temperature,and air velocity and converts into the sensor signal by equipped

processor. The sensing accuracy shall be ±0.5 PMV.

M. Differential Pressure Transmitter

uses silicon diaphragm for its sensing element. Detects deflection of itsdiaphragm as electrical capacitance. The sensing accuracy shall be ±1.0% of full span. Uses 4 to 20mA signal as output signal.

N. Pressure Transmitter

detects the pressure of chilled/hot water, brine, lubricating oil, steam, air,and other fluids. Converts measured values into 4 to 20 mA DC electric

signals.

2.1.9.2. User Terminal Devices

User terminal shall have a temperature sensing element built-in andfunctions as a sensor and a remote controller. User can set On/Off control of devices, temperature setting, and other controls of airconditioning equipment. LCD display will indicate the status of equipment and setting value and present value of temperature.

Use modular connectors for easy installation. This device shall beconnectable to DDC controllers such as Fan Coil Controller, VAV unit

controller, and AHU controller.

2.1.9.3. Electric Actuators and Control Valves

A. Electr ic Valve Actuator

Actuators for motorized control valve shall support several controlsignals as follows;

- Nominal 135 ohm feedback potentiometer

- Nominal resistance 135 ohm input

- 4 mA DC to 20 mA DC input

- 2 V DC to 10 V DC input

B. Contro l Valve

Supplier shall provide the Control valve with the body materials as stated

below;

- FC200: Gray cast iron

- SCS13A: Stainless steel

- FCD450: Ductile cast iron



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Diameter nominal size shall range from DN15 to DN150.

C. Motori zed Control Valve

Provide the valve which electric actuator and its valve body shall beintegrated in a single unit.

D. Motorized Control Valve with Flow Measurement and Control

Functions

Provide the valve which electric actuator and its valve body shall beintegrated in a single unit.

The control valve shall control flow rate not by valve opening but by flowrate calculated by the measured value from built-in pressure sensor andCv.

The control valve comes with built-in pressure sensor and temperaturesensor. The built-in pressure sensor ranges from 0 to 10 MPa at theaccuracy of ±0.1% FS for 7-17°C or 45-65°C and ±0.5% FS for other

conditions. The built-in temperature sensor ranges from 0 to 100°C atthe accuracy of ±1°C.

E. Electric Damper Actuator:

A motorized actuator to open and close a damper. The actuator isprovided on and off control or floating control in response to a commandfrom a controller. Combined with an auxiliary potentiometer will enable

the actuator proportional control in response to a command from aproportional controller.

The damper actuator shall have the torque at the rated voltage of 20Nm

and holding torque of 16Nm.

Operating time is approximately 15 seconds.

F. Electric Damper Actuator:

A motorized actuator to open and close a damper. The actuator isprovided on and off control or floating control in response to a commandfrom a controller. Combined with an auxiliary potentiometer will enable



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2.2. SOFTWARE REQUIREMENTS

2.2.1. Software Requirements for BMS

BMS shall include the application software for management, monitoring,and controls.

2.2.2. User Management

System shall be secured its access by user IDs and passwords. UserManagement function shall be the one manages the passwords anduser IDs. Administrator shall be able to set the access rights of bothbrowsing and operation for each function and the point operation level

according to the user ID.

This function shall be able to register up to 200 user IDs. Normally,

user authentification shall be performed by user ID and password.User shall also be authentificated by registering the IP address of ClientPC. It is possible to set up to 4 client PCs for 1 user ID. Passwordshall be able to set within 36 alphanumeric characters. User shall beable to change the password anytime.

Screen access rights to display and operate shall be set by user.Operation level, alarm, and buzzer shall be able to set by segregation.

2.2.2.1. Log Output

Records and displays all the operating logs carried out by user in list.

Items to be recorded and displayed are:- Date (YYYY/MM/DD) at the time of operation

- Time (hours, minutes, and seconds) at the time of operation

- IP address of Client PC

- User ID

Operation type such as displaying, setting, printing, change of display,and canceling, button name to be clicked, dialog box name to be opened,contents of operation,

contents of inputs and setting, device ID, point ID, point name, programname, and operation failed or not.

Maximum storable logs are up to 1,000,000 logs. Operation logs shallbe able to output in CSV file format and save in Client PC.

2.2.3. Graphic

Displays the status of each facility targeted for management in graphicformats such as floor plan, cross section and schematic diagram. Useris possible to perform the equipment's ON/OFF operation and setpointchange operation, and to display the trending graph and individual



14


equipment schedule.

The graphic displays present the status of each piece of equipment to becontrolled in graphical forms such as floor plans, cross sections or

schematic diagrams. Starts/stops equipment, changes setting, displayshistorical trend and individual equipment schedule. The displays can beenlarged and reduced at a desired magnification using SVG supportingmagnification at browser. Up to 1,000 graphical displays can beassigned to the system.

A dynamic element placed on a static element of equipment or floorindicates the status of a point by changing the color of the symbol ordisplaying the numerical value of analog/totalizer point. The dynamicelement can also lead operators to another graphic display. Up to 200dynamic elements can be displayed on a screen.

The types of dynamic elements (points + screen transition) are shown

below:

- Digital color change

- Digital shape change

- Analog numerical value display

- Animation

- Live wire display

- Graphic display selection

- Screen call

- Screen transition

- Picture scanner read display

User shall be able to modify or revise the graphic using GraphicGenerator software which generates user-defined graphics and givesfacility to edit the screen in the event of any change in the applicationenvironment such as partition or room name of the building.

2.2.4. Group List

Lists groups for the user to manage the Points easily. In addition to the

system group list that is already listed, there is the user group list thatcan be set by the user optionally.

It is possible to carry out batch ON/OFF command and batch settingschange for each group. Servers shall have a capability of redundantsystem.

2.2.5. Alarm

If any alarm occurs, the system automatically processes the alarm. The system notifies the alarm via buzzer sounds. BMS shall displaythe latest alarm and brink indicators. The operation of the latest alarm



15


display, buzzer sounds and the Alarm Dashboard can be specified bythe segregation pattern of the Segregation setting. Four types of alarmsounds are available for each alarm level.

The following alarm events are available.<Points>

- Alarm input

- Unmatched command (Failure of start/stop of start/stop points, status- unmatched)

- Analog high/low limit alarm

- Sensor error

- Trouble

- Totalized value increase error

- Control alarm (Power demand target value exceeded, etc.)

<System>

- Component alarm (bus trouble, line status, error, remote unit noresponse)

- Power demand alarm, power failure alarm, fire alarm

Specify the following alarm level for each alarm point.

- Emergency alarm

- Major alarm

- Moderate alarm

- Minor alarm

2.2.5.1. Alarm Dashboard

Displays the information about change of status and alarm occurrence

traditionally printed on a message printer. Only the requiredinformation can be extracted and displayed by narrowing search toall/alarm/operation setting/unacknowledged alarm records or searchinginformation by a desired text string. Comments can also be entered if any. The accumulated data can be saved to the desired media (harddisk/USB memory, etc.) of a Client PC in a CSV format file. The datashall be displayed in PDF file to realize paper-less operations.

The information displayed on the Alarm Dashboard is as follows:

- Point alarm

- Control alarm

- Device alarm

- Remote unit alarm

- Point operation

- Point change of status



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When an alarm occurs in logged-in status, the alarm is notified by thebuzzer sound, updated New Alarm display, and indicator blinking based

on the alarm. Also, alarm occurrence and recovery will be recorded inAlarm Dashboard irrespective of login status.

Buzzer sound has kinds of tones in each alarm level. Alarm is alsogiven as an appropriate voice announcement when an alarm occurs.

2.2.5.2. Alarm Noti fication via E-mail or SMS

Alarms shall be notified to the PC or mobile terminal of buildingadministrator through E-mail or Short Message Service. Alarmnotification supports alarm confirmation operation in places far awayfrom the client PC.

2.2.6. Device/Remote Unit Status Monitoring

Based on the device/remote unit status monitoring function, the status of system servers, system controllers, and filed controllers is constantlymonitored. Whenever a trouble is found, and alarm is notified with thebuzzer sound, and so on.

2.2.7. Trending

Trending function graphically displays time-series variation in measured

point data such as power and temperature, time series changes of power operation status (ON/OFF), and totalized data are stored for afixed period of time and displayed on trend graph (broken line) and bargraph (bar graph/laminated graph).

User shall also display up to 8 different scales of graph all at once. 4axes each are displayed on both left and right side of the trending graph.

Trend shall be able to display up to 8 points per sheet and 400 sheetsmaximum. Displayable points are ON/OFF, Status, Measured, Setpoint,and Tantalization.

Data of 1 minute cycle shall be able to be displayed for up to 40 days.

Data of 1 hour cycle is stored for the past 13 months. Data of 1 daycycle is stored for the past 10 years. Data of 1 month cycle is stored forthe past 10 years.

Displayable graph types are broken line, bar, laminated, combination of broken line and bar graph, combination of broken line and laminatedgraph.

2.2.7.1. Real Time Trending



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In addition to the trending function, the real time trending shall also beselectable. Collects and stores the data of points that are targeted forreal time data collection, and then displays obtained results as brokenline graph. The latest data shall be collected all the time. Meanwhile,

in “Specific” method, there are two data collection methods, namely amethod to collect the point data when status change has occurred ondigital point and a method to collect the point data by setting starttime/end time. It can be set in either one of these. Collected pointdata shall be displayed as real time trending graph. It shall be able todisplay and print the real time trending graph as numeric data. Thepoints targeted for real time data collection and the information about thecollection conditions set by the user in client PC will be set in real time

data collection file. The real time data collection file reflects theinformation to Server for System Management and Advanced BuildingController through update function.

Minimum data collection cycle for real time trending is 1 second andusual trending collects and displays in 15 minutes interval.

2.2.8. Report

Measured values and totalized values are displayed on the screen, andthe daily report of electricity and air-conditioning operations are prepared.User shall be able to output daily report either automatically or manuallyin PDF format (print image) which realize paper-less operation.

2.2.8.1. Daily Report

Daily reports for the last 40 days including the current day can bedisplayed and printed manually. Daily report displayed on the screencan be output in CSV format as well.

Printable data are the following 3 data.

- Hourly report datacontains 1-minute values totalized for 1 hour (totalized value) ORselected value among; max./min./average value of 1-minute values for1 hour and on-the-hour value (measured value)

- Daily report datacontains 1-hour values totalized for 1 day (for the current day and for

previous day) and load factor (totalized value only) AND max., min.,av., and reading values of 1-hour values for 1 day. (Specify the values

necessary to print.)

- Monthly report datacontains 1-day value totalized for 1 month (to the current day of themonth from the following day of the previous month, to the current dayof the previous month from the following day of the two monthsprevious) and load factor (totalized value only) AND max., min., and av.

values of 1-day values for 1 month. (Specify the values necessary to



18


print. Monthly report data is printed out after the daily report data isprinted.)

Monthly report can be output either automatically or manually in PDF

format (print image).

2.2.8.2. Monthly Report

Monthly reports for the last 13 months including the current month canbe displayed and printed manually at your convenience. Monthly report

displayed on the screen can be output in CSV format as well.

Printable data are following 3 data as a monthly report.

- Daily report datacontains 1-hour values totalized for 1 day and load factor (totalizedvalue only) OR selected value among; max./min./average value of

1-hour values for 1 day.

- Monthly report datacontains 1-day values totalized for 1 month (for the current month andfor the previous month) and load factor (totalized value only) ANDmax., min., and av. values of 1-day values for 1 month. (Specify thevalues necessary to print. Monthly report data is printed out after thedaily report data is printed.)

- Yearly report datacontains 1-month values totalized for 1 year (to the current month of the year from the following month of the previous year, to the currentmonth of the previous year from the following month of the two yearsprevious) and load factor (totalized value only) AND max., min., and av.values of 1-month values for 1 year. (Specify the values necessaryto print. Yearly report data is printed out after the monthly report datais printed.)

Yearly report can be output either automatically or manually in PDFformat (print image).

2.2.8.3. Yearly Report

Yearly reports for the last 10 years including the current year can be

displayed and printed manually at your convenience. Yearly reportdisplayed on the screen can be output in CSV format as well.

Printable data are the following 2 data as a yearly report.

- Monthly report datacontains 1-day values totalized for 1 month and load factor (totalizedvalue only) OR selected value among; max./min./average value of 1-day values for 1 month.

- Yearly report datacontains 1-month values totalized for 1 year (for the current year and



19


for the previous year) and load factor (totalized value only) AND max.,min., and av. values of 1-month values for 1 year. (Specify the valuesnecessary to print. Yearly report data is printed out after the monthlyreport data is printed.)

2.2.8.4. Editable Report Format

Report format is editable freely by users if required. User shall be ableto change, add and delete ruled lines, and insert merged cell to matchthe requirement of each project. BMS shall switch the report formatwhen locale is changed.

2.2.9. Runtime Monitoring and On/Off Counting

This function shall be used to display the equipment that exceeds acertain value of runtime/on-off cycle count, in the MaintenanceNotification screen, and activates the judgment of equipment inspectionand replacement time.

User shall be able to maintain and replace the equipment in the buildingat regular intervals, prevent the breakdown of the equipment, andthereby control the maintenance cost.

It is possible to generate and displays the PDF file as maintenancemonitoring report with the information of all equipment or the equipmentthat exceeds the monitoring targeted value. The PDF file can beprinted manually anytime using a printer.

Up to 50 groups and 100 points per group shall be monitored andcounted.

This function counts total time and elapsed time up to 999,999 hours.

2.2.10. Overtime Running

Overtime running means the extra running of the equipment based onthe operation requested from the user operable equipment or client PC,in other than the time slot (core time) that is set in advance. Receivingof request, count of actual runtime and printing are carried out in the

overtime running management.

2.2.11. Meter Reading

Automatically collects the overtime runtime data and the meter-readingvalue of meters measuring power, water supply, gas, and so on.Calculates the consumption month wise.

In addition, it detects and modifies abnormal value after meter-readingand outputs the list of meter-reading results.



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Maximum data points available are 3000 meters including 1,500 actualmeters and 1,500 logical meters.

Up to 50 types of Meter shall be assignable. This function handles up

to 400 tenants.Maximum totalization point shall be 1,500 meters. Overtime runtime is1,000 request units maximum.

Automatic meter-reading shall be able to set once a month. Operatorshall read meter manually anytime.

Meter reading record shall be saved in CSV format and output anytime

operator requests.

2.2.12. Time Program Contro l

Automatically starts or stops the equipment at the preset time. For theweekly schedule (that is the base schedule for each day of the weekthroughout the year) and the priority schedule (that can be used forholiday settings, etc.), it is possible to set up to 8 times operation and the

time a day.

Based on the weekly schedule, priority schedule, and calendar*1settings, the execution schedule for the next 1 week from the currentdate can be created for starting or stopping the equipment.

Further, it is possible for the user to specify name for time programs.

Time programs shall be able to display all the on/off time settings of timeprograms in list.

2.2.13. Schedule Composition

Interlocks multiple Time Programs into 1 schedule and write it in aspecified Time Program. It shall be convenient to create a scheduleusing this function based on the time program of each tenant, forcommon utility areas (such as entrance hall) used by many tenants.

Compose up to 10 sub-programs per Advanced Building Controller andup to 10 time programs per sub-program.

2.2.14. Event Program

Automatically performs interlock operation for multiple facilities such asAHU and lighting inside the building, along the predeterminedconditions.

It is possible to take a common emergency action and reduce the load torun each facility by specifying the link and related operation betweenmultiple facilities, such as run pattern/run sequence of facilities andcounter measures during alarm, in advance.



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2.2.15. Energy Saving Appl ications

BMS shall have the applications designed for Energy-saving control.

The applications include control software such as Optimum Start/StopControl, Chiller Optimum Start/Stop Control, Duty Cycle Control, PowerDemand Control, VAV Control, and VWV Control.

2.2.15.1. Optimum Start/Stop Control

This function estimates the attribute of temperature raise/fall for HVACstart/stop and performs the optimum start/stop control of Air Handling

Units to avoid unnecessary runtime. Up to 50 subsystems shall be ableto control under Advanced Building Controller. This function output theoptimum timing of start/stop command based on the time program inwhich measured room temperature and control equipment are assigned.

2.2.15.2. Chiller Optimum Start/Stop Control

This function refers to the estimated optimum start/stop time based onthe optimum start/stop control for AHU, and starts the chiller plant "x"minutes earlier than the optimum start time of the earliest AHU and stopsthe chiller plant "y" minutes earlier than the optimum stop time of thelatest AHU, within the same chiller plant system. Up to 4 types of start/stop holding time shall be able to set per subprogram.

2.2.15.3. Duty Cycle Control

This function calculates the optimum stop time of Packaged AirConditioning units etc. while maintaining a comfortable temperature

environment, and reduces thermal energy/electrical energy byperforming duty cycle control up to 20 subsystems per AdvancedBuilding Controller and up to 20 points per subsystem. This functionstops and recovers the equipment based on the measured roomtemperature.

2.2.15.4. Power Demand Control

This function supports 2 types of power contracts; Actual and Demand,to cover a variety of power contract systems that may differ dependingon countries. Power demand control function estimates the usage of power at intervals, decides the necessity of interruption/recovery, andinterrupts/recovers the equipment according to the capacity required.

BMS stores the power demand control results as history and displaysthe targeted value and demand value.



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Further, it is possible to save the day's data and month's data of powerdemand in the optional media (hard disk, USB memory, etc.) of the clientPC, in CSV format.

2.2.16. Power Failure & Restoration Control

During power failure, if Server for System Management, Server for DataStorage, and Advanced Building Controller are backed up with UPS,alarm notification shall be given through buzzer sound, blinking of thepower failure icon, and new alarm display. During this stage, outputs

except fire process event program output, power failure event output,and output made by manual operation are withheld.

When detecting the startup of the generator, startup is output one by onein the points registered in the generator registration order list. Outputs

other than fire process event program output, power failure event output,and output made by manual operation are withheld.

Power restoration program shall be able to start up when detectingcommercial power restoration. At this time, since output is done forON/OFF point in the same way as before power failure occurrence andalso the output that was withheld during power failure is output, it ispossible to move back automatically to the original status. Selectingautomatic/manual startup and specifying the point order of powerrestoration is possible for power restoration program.

2.2.17. Generator Load Distr ibution Control

When the generator for an emergency purpose is operated during powerfailure, this function keeps the power load. If the instantaneous value of the generator load exceeds the desired value set beforehand, excesspower is cutoff from units in order of low-priority level. On the otherhand if it is low, power is connected to the units in order of priority level.

2.2.18. VAV Control

Provide the VAV control application which optimizes the supply airtemperature and pressure of AHU including VSD control of AHU fan.

The application shall have the function to optimize the pressure loss of duct to reduce energy consumption of fan.

Provide the function that optimizes supply air temperature to satisfy eachzone temperature condition.

2.2.19. VWV Control

VWV stands for Variable Water Volume. This application shall be a partof energy saving applications for heating/cooling source delivery



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systems. VWV shall control the running speed of secondary waterdelivery pumps in Chiller Plant to maintain the supply water pressure incertain level by means of all AHUs’ differential pressure. Enablespower of the delivery pump to be reduced significantly without the

decrease of HVAC performance.

VWV control requires motorized control valve with differential pressuresensor to detect the differential pressures of all AHUs.

VWV control consists of three programs such as demand calculation perprogram, pressure setpoint calculation, and energy saving effectcalculation.

Demand calculation per program calculates the demand level of eachprogram of a maximum of 30 AHUs with the same control level.

Setpoint calculation determines the setpoint change request for chillerplant equipment. The pressure setpoint is calculated based on thesetpoint change request.

Energy saving effect calculation calculates the energy saving effect as a

result of VWV control.

2.2.19. DDC Software

Provide DDC software which freely programmable and modifiable bysystem engineers. System Engineer shall be able to create or modifycontrol software for multipurpose controller through field engineeringtools. By entering necessary parameters and wiring output and input of

each software module, control software for certain HVAC applicationsshall be created.

2.2.20. Chiller Plant Control Packaged Controller

Chiller Plant Control Packaged Controller is a direct digital controller(DDC) specifically designed for sequential control of chiller plantequipment of building HVAC systems. This controller carries outenergy-saving control including the optimization of multiple chillers and

other chiller plant units in response to the air conditioning load. Usercan change the setting of control sequence through operator interface

equipped with the controller. Not only the pre-programmed sequence,but also the user-determined programmed control is also available forChiller plant control.

Operator shall be able to switch automatic/manual operation bycommunicating with host system. Manual operation takes highest

priority for all the control sequences.

Group command is executed by communicating with the host BMS oroperating interface.

Daytime or nighttime mode can be switched by communicating with host



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system. The switchover between daytime and nighttime modeschanges the operating sequences, maximum number of running chillers,and load at startup.

Operator shall be able o switch cooling/heating mode by communicatingwith host BMS or operating interface. The switchover between coolingand heating also changes the operating sequences, maximum numberof running chillers, and load at startup.

Operating sequence has several types such as normal sequence,sequence with base unit changeover, rotation, and operator program.Normal sequence fixes the order of chiller or pump. Sequence withbase unit changeover performs the sequential control but base unit ischanged so as to avoid too much load for base unit.

Rotation mode is a method for averaging each chiller runtime. Theoperating sequence of he chillers are sequentially shifted so that the

chiller which has been stopped for the longest period is started first andthe chiller which has been running for the longest period is stopped first.

Operator shall be able to program the operation sequence. Thismethod is useful when the capacity of chillers or pumps to be controlleddiffers; operator is possible to assign desired sequence.

2.2.21 Software Requirements for Security System

Security System shall include the application software for management,monitoring, and controls.

2.2.22 Room Data Process

Room is considered to be the smallest unit in the building, which issegmented to perform the security status changeover (alert/non alert)and access user management in Security System. Multipleregistrations of data points required for controlling and monitoring shallbe being performed in one room.

In this system, each room is registered in Access Controller, and thenthe controller performs access management control for those rooms.

Consequently, when there are several card readers in a single room,

access management control will be executed simultaneously for all thecard readers in the room. In Figure 1 of “Room setting example”, securitychangeover can be made from either one of the 2 card readers.

2.2.23 Access User Management

Access user management manages the user information that is used foraccessing the buildings and rooms. It includes the operation of userregistration, deletion, display based on various search conditions, settingthe information and copying the attributes.



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User access operation becomes possible by distributing the userinformation created in the center to the remote.

Up to 100,000 users shall be manageable. User information shall

include access information and personal information as stated below.

Access Information

- Department ID

- User No.

- Card data

- Card type

- Registration status

- Entry allowed room/group

- Validity period

- PIN- Close rights

- 1st entry rights

- Last exit rights

- Pass back rights.

Personal Information

- Name

- Nickname

- Division (up to 2 divisions manageable)

- Gender

- Date of Birth

- Age (calculated automatically from the date of birth)

- Notes (up to 5 notes memorable)

2.2.24 Log Output

Records and displays all the operating logs carried out by user in list.Items to be recorded and displayed are:

- Date (YYYY/MM/DD) at the time of operation

- Time (hours, minutes, and seconds) at the time of operation

- IP address of Client PC

- User ID

Operation type such as displaying, setting, printing, change of display,and canceling, button name to be clicked, dialog box name to be opened,contents of operation,

contents of inputs and setting, device ID, point ID, point name, programname, and operation failed or not.



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Maximum storable logs are up to 1,000,000 logs. Operation logs shallbe able to output in CSV file format and save in Client PC.

2.2.25. Graphic

Displays the status of each facility targeted for management in graphicformats such as floor plan, cross section and schematic diagram. Useris possible to perform the equipment's ON/OFF operation and setpointchange operation, and to display the trending graph and individualequipment schedule.

The graphic displays present the status of each piece of equipment to becontrolled in graphical forms such as floor plans, cross sections orschematic diagrams. Starts/stops equipment, changes setting, displayshistorical trend and individual equipment schedule. The displays can be

enlarged and reduced at a desired magnification using SVG supportingmagnification at browser. Up to 1,000 graphical displays can beassigned to the system.

A dynamic element placed on a static element of equipment or floorindicates the status of a point by changing the color of the symbol ordisplaying the numerical value of analog/totalizer point. The dynamicelement can also lead operators to another graphic display. Up to 200dynamic elements can be displayed on a screen.

The types of dynamic elements (points + screen transition) are shownbelow:

- Digital color change

- Digital shape change

- Analog numerical value display

- Animation

- Live wire display

- Graphic display selection

- Screen call

- Screen transition

- Picture scanner read display

User shall be able to modify or revise the graphic using Graphic

Generator software which generates user-defined graphics and givesfacility to edit the screen in the event of any change in the applicationenvironment such as partition or room name of the building.

2.2.26. Group List

Lists groups for the user to manage the Points easily. In addition to thesystem group list that is already listed, there is the user group list thatcan be set by the user optionally.



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It is possible to carry out batch ON/OFF command and batch settingschange for each group. Servers shall have a capability of redundantsystem.

2.2.27. Alarm

If any alarm occurs, the system automatically processes the alarm. The system notifies the alarm via buzzer sounds. BMS shall displaythe latest alarm and brink indicators. The operation of the latest alarmdisplay, buzzer sounds and the Alarm Dashboard can be specified by

the segregation pattern of the Segregation setting. Four types of alarmsounds are available for each alarm level.

The following alarm events are available.

<Points>

- Alarm input

- Unmatched command (Failure of start/stop of start/stop points, status- unmatched)

- Analog high/low limit alarm

- Sensor error

- Trouble

- Totalized value increase error

- Control alarm (Power demand target value exceeded, etc.)

<System>

- Component alarm (bus trouble, line status, error, remote unit noresponse)

- Power demand alarm, power failure alarm, fire alarm

Specify the following alarm level for each alarm point.

- Emergency alarm

- Major alarm

- Moderate alarm

- Minor alarm

2.2.27.1 Security Alarm Dashboard

Displays the information about change of status and alarm occurrencetraditionally printed on a message printer. Only the requiredinformation can be extracted and displayed by narrowing search to

all/alarm/operation setting/unacknowledged alarm records or searchinginformation by a desired text string. Comments can also be entered if any. The accumulated data can be saved to the desired media (harddisk/USB memory, etc.) of a Client PC in a CSV format file. The datashall be displayed in PDF file to realize paper-less operations.



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The information displayed on the Alarm Dashboard is as follows:

- Point alarm

- Control alarm- Device alarm

- Remote unit alarm

- Point operation

- Point change of status

When an alarm occurs in logged-in status, the alarm is notified by thebuzzer sound, updated New Alarm display, and indicator blinking basedon the alarm. Also, alarm occurrence and recovery will be recorded inAlarm Dashboard irrespective of login status.

Buzzer sound has kinds of tones in each alarm level. Alarm is alsogiven as an appropriate voice announcement when an alarm occurs.

2.2.27.2 Alarm Notification via E-mail or SMS

Alarms shall be notified to the PC or mobile terminal of buildingadministrator through E-mail or Short Message Service. Alarmnotification supports alarm confirmation operation in places far awayfrom the client PC.

2.2.28. Device/Remote Unit Status Monitoring

Based on the device/remote unit status monitoring function, the status of system servers, system controllers, and filed controllers is constantlymonitored. Whenever a trouble is found, and alarm is notified with the

buzzer sound, and so on.

2.2.29. Report

Measured values and totalized values are displayed on the screen, andthe daily report of electricity and air-conditioning operations are prepared.User shall be able to output daily report either automatically or manuallyin PDF format (print image) which realize paper-less operation.

2.2.29.1. Daily Report

Daily reports for the last 40 days including the current day can bedisplayed and printed manually. Daily report displayed on the screen

can be output in CSV format as well.

Printable data are the following 3 data.

- Hourly report datacontains 1-minute values totalized for 1 hour (totalized value) OR



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selected value among; max./min./average value of 1-minute values for1 hour and on-the-hour value (measured value)

- Daily report data

contains 1-hour values totalized for 1 day (for the current day and forprevious day) and load factor (totalized value only) AND max., min.,av., and reading values of 1-hour values for 1 day. (Specify the valuesnecessary to print.)

- Monthly report datacontains 1-day value totalized for 1 month (to the current day of the

month from the following day of the previous month, to the current dayof the previous month from the following day of the two monthsprevious) and load factor (totalized value only) AND max., min., and av.values of 1-day values for 1 month. (Specify the values necessary toprint. Monthly report data is printed out after the daily report data is

printed.)Monthly report can be output either automatically or manually in PDFformat (print image).

2.2.29.2. Monthly Report

Monthly reports for the last 13 months including the current month canbe displayed and printed manually at your convenience. Monthly reportdisplayed on the screen can be output in CSV format as well.

Printable data are following 3 data as a monthly report.

- Daily report datacontains 1-hour values totalized for 1 day and load factor (totalizedvalue only) OR selected value among; max./min./average value of 1-hour values for 1 day.

- Monthly report datacontains 1-day values totalized for 1 month (for the current month andfor the previous month) and load factor (totalized value only) ANDmax., min., and av. values of 1-day values for 1 month. (Specify thevalues necessary to print. Monthly report data is printed out after thedaily report data is printed.)

- Yearly report data

contains 1-month values totalized for 1 year (to the current month of the year from the following month of the previous year, to the currentmonth of the previous year from the following month of the two yearsprevious) and load factor (totalized value only) AND max., min., and av.values of 1-month values for 1 year. (Specify the values necessary

to print. Yearly report data is printed out after the monthly report datais printed.)

Yearly report can be output either automatically or manually in PDFformat (print image).



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2.2.29.3. Yearly Report

Yearly reports for the last 10 years including the current year can be

displayed and printed manually at your convenience. Yearly reportdisplayed on the screen can be output in CSV format as well.

Printable data are the following 2 data as a yearly report.

- Monthly report datacontains 1-day values totalized for 1 month and load factor (totalized

value only) OR selected value among; max./min./average value of 1-day values for 1 month.

- Yearly report datacontains 1-month values totalized for 1 year (for the current year andfor the previous year) and load factor (totalized value only) AND max.,

min., and av. values of 1-month values for 1 year. (Specify the valuesnecessary to print. Yearly report data is printed out after the monthly

report data is printed.)

2.2.29.4. Edi table Report Format

Report format is editable freely by users if required. User shall be ableto change, add and delete ruled lines, and insert merged cell to matchthe requirement of each project. BMS shall switch the report formatwhen locale is changed.

2.2.30. Security Card Data Import

Provide the function that imports the security card data items in CSVformat.

- User No.

- Card data

- User Name

- User Nickname

- 2 Divisions of organization

- Gender

- Birthday- 5 Notes

- All room rights

- Rights pattern

- Rights index

- Rights index for area

- Rights index for room

- Close mode privilege



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- 1st entry privilege

- Last exit privilege

- Passback privilege

- State of registration- Start date of valid term

- End date of valid term

- Number of card issue

- Department ID

2.2.31. Security Card Data Export

Provide the function that exports the security card data items in CSVformat.

- User No.- Card data

- User Name

- User Nickname

- 2 Divisions of organization

- Gender

- Birthday

- 5 Notes

- All room rights

- Rights pattern

- Access rights index- Access rights index for area

- Access rights index for room

- Access rights index for room name

- Close mode privilege

- 1st entry privilege

- Last exit privilege

- Passback privilege

- State of registration

- Start date of valid term

- End date of valid term- Number of card issue

- Department ID

- Department Name

2.2.32. Personal Photo Image Import

Provide the function that imports the photo image of card user, and to

display it in the screen. By checking the screen display, it is possible to



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confirm the identity of the card holder in case he or she loses the card,etc. The image data can be imported from the media on to the driveconnected to the client PC in J PEG image. It is possible to specify thesource folder for importing. that exports the security card data items in

CSV format.

2.2.33. Scope Management

Scope management function is used while registering/changing/deletingor referring to records of the access user information for each

department (or tenant). Management range and reference range willbe restricted based on the category setup. In other words, administratorof each department (Tenant) can register, delete, refer to access historyand perform occupant display, etc. towards only access users whosecategories are the same as his or her own category. Accordingly, if login is performed through the administrator ID and password, subsequentoperation and screen display will be automatically restricted by judgingthe category of the administrator who logged in.

2.2.34. Local Ant i-passback Control

Provide the function of Local Anti-passback Control. This function isused to compare the Card Reader type (Entry Reader or Exit Reader)with occupancy status (IN when the entry reader verification is OK andOUT in case of exit reader verification is OK) and perform accessmanagement without any logical discrepancy. With this function, it ispossible to prevent the unauthorized access such as "Card sharing" and"Unauthorized accompanying" and manage the occupancy more strictly.Local Anti-passback Control is the control made on a per-controller basisand it cannot perform logical judgment across rooms. To performcontrols across multiple doors or rooms, use Global Anti-passback.

2.2.35. Global Ant i-passback Control

As a result of card reader operation, Global Anti-passback functionallows the access if the card actually belongs to that particular zone anddisallows the access if it belongs to other zones. In other words, it judges

whether the correct individual is residing in the zone and carries out aproper access management without any logical discrepancy. With thisfunction, it is possible to prevent the unauthorized access such as "Cardsharing" and "Unauthorized accompanying" and manage the occupancymore strictly. Further, trouble such as system communication failure thataffects this control may occur. By considering these cases, it is possibleto set in advance, whether the flexibility or security should be givenimportance like “Allow all users at the time of trouble” or “Emphasize thesecurity even at the time of trouble” in accordance with the operation



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level.

2.3. SYSTEM INTEGRATION

2.3.1. BACnet Conformance

BMS and its components shall comply with BACnet IP as itscommunication protocol for open system integration. System serversshall be able to communicate with third-party BACnet devices.

2.3.2. LonMark Conformance

BMS shall have the product conformance by LonMark International®.Advanced Building Controller communicates with DDCs using LonTalkprotocol.

2.3.3. Modbus

BMS shall be connectable through Modbus protocol. Equipment suchas power meters, power monitoring systems, chillers or lighting systemsusing Modbus protocol can be monitored by the central BMS.



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3. EXECUTION

3.1. EXAMINATION

3.1.1. General

System architecture of BMS is based on the Server-client system. Allthe information and data is stored in System Servers. Client PC is usedsolely for browsing the contents of stored in server.

3.1.2. Installation

Installation must be carried out by following manufacture’s instructions.Installer must provide all the attachments, hardware, software,interconnections, and miscellaneous devices required to install thecomponents.

3.1.3. Test & Commissioning

On site test & commissioning of whole Building Automation System mustbe carried out by well-trained engineers with more than 3 yearsexperiences and trained at least 40 hours by BMS manufactures.

bms design guide

Documents