building management system stp vav vav
TRANSCRIPT
VAV RP
Building Management System
STP
VAV VAV
Applications of room and system solutions with VAV-UniversalEdition 2021-05/A
Air ratios under control.
Applications, VAV-Universal2
3Applications, VAV-Universal
Subject to technical modifications
Preface
Thank you for your interest in our products. In this brochure, you will find information on volumetric flow, duct pressure and room- pressure applications with the new VAV-Universal product range from Belimo.
All chapters are structured as follows:
– Brief description– Principle diagram– Function diagram– Device selection – Diagram– Parameter and tool overview
The last chapter, starting on page 61, also provides an overview of general principles such as connections, local override controls, sequential versus parallel control, etc. At www.belimo.com you will find further solutions from Belimo relating to the areas of room and system solutions, bus and system integration, ventilation applications and sensors. Please contact us for more information.
NoteThe Belimo VAV product range – VAV- Compact and VAV-Universal components incl. replacement devices – is only available from manufacturers of VAV units (OEM).Please contact the desired supplier. Your local Belimo representative is happy to help you if necessary.
Reference point
Duct pressure control loop
Measurement point
The diagram shows an example of the principle of one duct (line) pressure control.
Applications, VAV-Universal4
Subject to technical modifications
VAV-Universal – maximum flexibility for increased requirementsVentilation concepts according to DIN EN 15232 require modern, energy-efficient VAV control concepts and ensure operation as required from the fan to the room. Not as much as possible, but as much as necessary.In addition to the proven VAV-Compact product range, which covers around 90 percent of VAV applications, the modern VAV-Universal product range is now available for special applications. Its modular design, consisting of a VRU controller with integrated high-quality Δp sensor technology, enables the optimum combination of controller and damper motorisation for all VAV, duct pressure and room-pressure applications.
VRU controller sensor unitThe VRU controller sensor unit was developed for use in building technology and is perfectly matched to the VST actuators that belong to the system. Two sensor variants are available: in addition to the well-established, dynamic D3 sensor, the new M1 membrane sensor is also available.The system supports volumetric flow (VAV), duct pressure (STP) and room-pressure (RP) applications. The control via analogue, BACnet/Modbus, in hybrid mode or MP-Bus is preset with the corresponding tools by the OEM or on the system during system integration. NFC interface, service socket or a PP interface are available for easy tool connection.
VST actuator product rangeThe range of damper actuators with plug-and-play function includes rotary actuators, very fast running actuators and fail-safe rotary actuators. The actuator running time is detected by the VRU controller and used to optimise the control performance.
Belimo product types
5Applications, VAV-Universal
Subject to technical modifications
Tools for easy commissioning and parametrisationWith the Belimo Assistant App (Android, iOS), actual and setpoint values can be displayed graphically as trend data or parameters adjusted on the system via Bluetooth or NFC. The Belimo PC-Tool is available to system integrators and VAV manufacturers for the production of the VAV unit.
VAV-Compact L/N/SMV-D3-…The system solution for volumetric flow systems to equip your VAV units for VAV or CAV applications. For analogue control or for direct integration into Modbus, BACnet, KNX or MP-Bus systems. See www.belimo.eu
Applications, VAV-Universal6
Subject to technical modifications
Product and function overviewFunction Characteristic VRU-D3-BAC VRU-M1-BAC VRU-M1R-BAC
Application VAV/CAV Volumetric flow
Measure volumetric flow Volumetric flow
Position Control (Open-Loop) Volumetric flow
Duct pressure control Δp
Room-pressure control Δp
Room-pressure cascade control
Δp Room-pressure volumetric flow control
Flow Flow Δp
Integration in DCV system Requirement recording via damper position
Control Modulating min./max.
Step mode min./max.
Local override – input z1
Motor stop/damper OPEN
Local override – input z2
Damper CLOSED/max.
Room-pressure mode +/– Adjustable via Tool/Modbus/BACnet
Control (adjustable with Tool)
0…10 V/2…10 V/variable/bus
Modbus RTU, incl. hybrid mode
BACnet MS/TP, incl. hybrid mode
MP-Bus 1)
Feedback (Feedback U5) 0…10 V/2…10 V variable/bus
Volumetric flow/Δp/position ΔpΔp sensor Measuring principle D3 - flow (dynamic)
M1(R) - diaphragm (static)
Measuring ranges Application-dependent (VAV 0…500 Pa) 0...500 Pa 0...600 Pa −75...75 Pa
Field of application Comfort zone
Polluted air (compatibility test required)
Actuator Ready-to-connect connection Plug-and-play function
L/N/SM24A-VST 5/10/20 Nm, 120 s, rotary actuator
L/NMQ24A-VST 4 Nm, 2.4 s/8 Nm, 4 s, very fast running actuator
NKQ24A-VST 6 Nm, 4 s, very fast running actuator, electrical fail-safe
N/SF24A-VST LF24-VST
4/10/20 Nm, 120 s, mechanical fail-safe
Tools Assistant App, NFC NFC/Bluetooth
PC-Tool Default/OEM Manufacturing Tool
Note: VAV-Universal components incl. replacement units are only available from manufacturers of VAV units (OEM). The components VRD. /VRP.../..-V/..-SRV-ST of the old VAV-Universal product range are not compatible with the VRU./...-VST. Please contact your Belimo representative for further assistance.
1) RPC room-pressure cascade controllers cannot be integrated into MP-Bus systems.
7Applications, VAV-Universal
Subject to technical modifications
Terms
CAV Constant Air VolumeVAV Variable Air VolumeDCV Demand Controlled VentilationBMT Building management technology
DPC Duct pressure controllerRP Room-pressure controllerRPC Room-pressure cascade
cw Clockwise direction of rotationccw Anticlockwise direction of rotationmin. Operating mode min. according to the application V′min, P′min, min.max. Operating mode max. according to the application V′max, P′max, max.P′nom
1) Pressure application Δp control nominal setting1)
V′nom1) VAV applications volumetric flow nominal setting1)
Δp@V′nom1) VAV applications calibration unit VAV unit1)
1) OEM factory setting: fixed setting, values cannot be changed
D3 Δp sensor, D3 – flow sensor (dynamic)M1(R) Δp sensor, M1(R) – diaphragm sensor (static)VRU… VAV-Universal controller, Δp sensor unit…-VST VAV-Universal actuator, suitable for the VRU… controllerVC VAV-Compact product range, compact solution VAV controller and Δp sensor integrated in actuatorVU VAV-Universal product range, modular solution, VAV controller with integrated Δp sensor and external actuator
MOD Modbus interfaceBAC BACnet interfaceMP MP-Bus interfaceNFC Chip (Near Field Communication), interface for wireless tool connection
OEM Original Equipment Manufacturer
Applications, VAV-Universal8
9Applications, VAV-Universal
Page
Volumetric flow control VAV/CAVVRU-D3-BAC/VRU-M1-BAC
11
Volumetric flow measurementVRU-D3-BAC/VRU-M1-BAC
17
Position Control (Open-Loop)VRU-D3-BAC/VRU-M1-BAC
23
Duct pressure control STPVRU-D3-BAC/VRU-M1-BAC
29
Room-pressure control RPVRU-M1R-BAC
35
Room-pressure – VAV unit with bypass control RPVRU-D3-BAC/VRU-M1-BAC, VRU-M1R-BAC
43
Volumetric flow and room-pressure cascade control [RPC]VRU-D3-BAC/VRU-M1-BAC, VRU-M1R-BAC
51
ConnectionVRU-D3-BAC/VRU-M1-BAC/VRU-M1R-BAC
61
SUP/ETA unit in conjunctionVRU-D3-BAC/VRU-M1-BAC
65
Local override control z1/z2 Priority controlVRU-D3-BAC/VRU-M1-BAC/VRU-M1R-BAC
69
Commissioning room/duct pressure applications – Controller settingVRU-M1R-BAC/VRU-M1-BAC/VRU-D3-BAC
73
Table of contents
1
2
3
4
5
6
7
8
9
10
11
Applications, VAV-Universal10
1
11Applications, VAV-Universal
Page
Brief description12
Principle diagram
Function diagram13
Device selection
Diagram 14
Parameter and tool overview 15
Volumetric flow control VAV/CAVVRU-D3-BAC/VRU-M1-BAC
1
Subject to technical modifications
Applications, VAV-Universal12
Brief description–Variablevolumetricflowcontrol(VAV) V′min...V′max
–Constantvolumetricflowcontrol(CAV) DamperCLOSED/V′min/V′max / DamperOPEN
Volumetric flow control VAV/CAV
Principle diagram
Illustration example
A
A
B
-+
SUP
SUPETA
Ventilation system with constant [CAV] and variable air volume [VAV]–RoomandzoneapplicationsSUPunitorSUPandETAunit,incomfortzone–Extractair/extractionsystemsforpollutedextractair,e.g.kitchenextractair
TheVAV-UniversalVRU-...controlunitcontrolsthevolumetricflowspecifiedbythe room automation system, e.g. via a room temperature or air quality controllerforthedownstreamzone/room.Pressurefluctuationsintheairductsystem are detected and automatically corrected. Thefollowingvariantsareavailable incombinationwiththeactuatorsolutionoptimally suited to the application:– VRU-D3-BAC for comfort zone– VRU-M1-BAC for comfort zone and for polluted extract airThedamperpositionoftheVAVunitisavailableforDCVapplicationsviatheselectedbussystem(FanOptimiserfunction).
13Applications, VAV-Universal
Subject to technical modifications
Device selectionProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
VRU-D3-BAC VAV/CAV controller Δpsensor,integratedD3flowsensor0...500Pa
Comfort
VRU-M1-BAC VAV/CAV controller Δpsensor,integratedM1diaphragmsensor0...600Pa
ComfortPolluted air
L/N/SM24A-VST Rotary actuator, default 5/10/20Nm,120s All ranges
LF/NF/SM24A-VST
Rotary actuator, mechanical fail-safe
4/10/20Nm,120s,spring20s All ranges
LMQ24A-VST Rotary actuator, very fast running 4Nm,2.4s All ranges
NMQ24A-VST Rotary actuator, very fast running 8Nm,4s All ranges
NKQ24A-VST Rotary actuator, very fast running,electrical fail-safe
6Nm,4s All ranges
1
Control functions–V′min Minimum air exchange rate, hygiene section, building
protection(airhumidityetc.)–V′max Maximum air exchange rate, maximum cooling load,
removal of emissions–V′min…V′max Partialloadoperation-variablevolumeoperation(VAV)
–Localoverride(z1/z2) Motorstop,damperOPEN,V′max,damperCLOSED–Control analogue0…10V/2…10V,Modbus1), BACnet1),
MP-Bus1) Hybrid mode possible
Function diagram
VAV control: analogue/bus (setpoint) Feedback U5/bus (actual value)
0%
V′m
in (<
V′m
ax)
V′m
ax (>
V′m
in)
100%
a) V′nomb) ∆p@V′nomc)
100%
20%
V′max
V′min
0% 100%
Volumetricflow Volumetricflow/Δp/position
Actual value [U5]Setpoint[Y]
Rang
e
Rang
e 100%damperposition
Applications, VAV-Universal14
Subject to technical modifications
Diagram
Analogue control [Mode 0...10/2...10 V]–VAVmode:V′min/V′max
Analogue control [Mode 2...10 V]–CAVsteps:damperCLOSED/V′min/V′max
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
min
.m
ax.
A
B
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V AC/DC 24 VMP-Master
MP
1)
A
B
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16BA BA
GND
D−D+
MP-Bus
Control0/2...10V
Feedback
Feedback Feedback
DamperCLOSEDFeedback
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
Mode RTU, BACnet MS/TP
Option VAV-CompactProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
L/N/SMV-D3... VAV-Compactcontroller(VAV/CAV) Δpsensor,integratedD3flowsensor0...500PaRotaryactuator5/10/20Nm,integrated
Comfort
Seewww.belimo.eu
1)OtherMPdevices(total8)
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer.SeeVAV-Universal-VRUProductInformation:www.belimo.eu
Explanations/notes– Priority control p. 71– Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bus system: Seeseparateinstructions
VAV-Universal-VRU in VRP-Mcompatibilitymode(MP)
15Applications, VAV-Universal
Subject to technical modifications
Parameter and tool overview for volumetric flow control VAV/CAVApplica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
VAV unit – manufacturer parameters (OEM values – not variable)
Application Volumetricflow Application setting r r r O
Designation Text Modeldesignationunit/damper(16Z.) r r – O
V′nom m3/h/l/s/cfm Volumetricflownominalvalue r r r O
Δp@V′nom Pa CalibrationVAVunit[38…500Pa] r r – O
SNactuator xxxxx-xxxxx-xxx-xxx Actuator serial number r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./adaption
Actuator power-on behaviour r/w r/w – E
Damperleakage suppressed
OFF/ON Retrofitapplication,damperleakage r r – O
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
V′max m3/h/l/s/cfm(ZTH%) OperatingvolumetricflowV′max 20…100%V′nom
r/w r/w r/w
V′min m3/h/l/s/cfm(ZTH%) OperatingvolumetricflowV′min 0…100%V′nom
r/w r/w r/w
Altitude compensation ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 0m CompensatedΔpandvolumetricflowvalues to set the altitude of installation (abovesealevel)
r/w r/w – E
Control function VAV/CAV VAV control, active r/w r/w – E
Room-pressure cascade
OFF VAV: secondary circuit room pressure cascade
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
Setpointoffset 0% VAV:±5%compensationABLunit r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable SettingforVAVcontrol r/w r/w – E
Feedbacktype Volumetricflow/Δp/position Volume/Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
1
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O–OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
Applications, VAV-Universal16
2
17Applications, VAV-Universal
Page
Brief description18
Principle diagram
Function diagram19
Device selection
Diagram 20
Parameter and tool overview 21
Volumetric flow measurementVRU-D3-BAC/VRU-M1-BAC
2
Applications, VAV-Universal18
Subject to technical modifications
Brief descriptionVolumetric flow measuring device (transmitter) for detecting or monitoring volumetricflow
Principle diagram
Illustration example
-+
- +
-+
CommonETA-VAVunit
Volumetric flow measurement
Setpoint[Y]
Volumetricflowmeasuringdevicesfordetectingormonitoringvolumetricflow–Inairhandlingunitsincomfortzonesandforpollutedfluid–E.g.forrecordingthetotalsupplyairforthesetpointspecificationofa
common extract air-side VAV unit–Displayfunction0…100%V′nom
–Analogueintegration0…10V/2…10V,Modbus,BACnet,MP-Bus
Volumetric flow measurement
19Applications, VAV-Universal
Subject to technical modifications
Function diagram
Device selectionProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
VRU-D3-BAC VAV/CAV controller Δpsensor,integratedD3flowsensor0...500Pa
Comfort
VRU-M1-BAC VAV/CAV controller Δpsensor,integratedM1diaphragmsensor0...600Pa
ComfortPolluted air
2
Feedback U5/bus (actual value)
0%min.
max.
100%
Volumetricflow
Actual value [U5]
Applications, VAV-Universal20
Subject to technical modifications
Diagram
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer. SeeVAV-Universal-VRUProductInformation:www.belimo.eu
Analogue operation [Mode 0...10/2...10 V]DisplayV′nom
1)OtherMPdevices(total8)
Explanations/notes– Priority control p. 71– Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bussystem: Seeseparateinstructions
VAV-Universal-VRU in VRP-Mcompatibilitymode(MP)
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V AC/DC 24 VMP-Master
MP
1)
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16
GND
D−D+
MP-Bus
Volumetricflow0/2...10V
Mode RTU, BACnet MS/TP
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
21Applications, VAV-Universal
Subject to technical modifications
Parameter and tool overview for volumetric flow measurementApplica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
VAV unit – manufacturer parameters (OEM values – not variable)
Application Volumetricflow Application setting r r r O
Designation Text Model designation measuring device (16Z.)
r r – O
V′nom m3/h/l/s/cfm Volumetricflownominalvalue r r r O
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
Altitude compensation ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 0m CompensatedΔpandvolumetricflowvalues to set the altitude of installation (abovesealevel)
r/w r/w – E
Feedbacktype Volumetricflow Volume r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O–OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
2
Applications, VAV-Universal22
3
23Applications, VAV-Universal
Page
Brief description24
Principle diagram
Function diagram25
Device selection
Diagram 26
Position Control (Open-Loop)VRU-D3-BAC/VRU-M1-BAC
3
Applications, VAV-Universal24
Subject to technical modifications
Brief descriptionVAV-Universal-VRU-… sensor/actuator in position control mode (Open-Loop, i.e.VAVcontrolfunctioninactive)–Volumetricflowdisplay 0...100%V′nom
–Damperactuator,control 0...100%rangeofrotation
Position Control (Open-Loop)
Principle diagram
Illustration example
-+
Application noteWhen designing the bus application, the cycle times for reading the actual valuesandwritingthedamperpositionmustbetakenintoaccount.
In this application, the VAV-Universal VRU-... functions solely as a sensor and actuator element. Position control mode: volumetric flow/pressure control inactive.– VRU-D3-BAC for comfort zone– VRU-M1-BAC for the comfort zone and polluted extract air
Position control function–Volumetricflowdisplay 0...100%V′nom
–Damperactuator,control 0...100%rangeofrotation–Localoverride(z1/z2) Motorstop,damperOPEN,damperCLOSED–Control analogue0…10V/2…10V, Modbus 1), BACnet 1), MP-Bus1) Hybrid mode possible
25Applications, VAV-Universal
Subject to technical modifications
Function diagram
Device selectionProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
VRU-D3-BAC PositionControl(Open-Loop) Δpsensor,integratedD3flowsensor0...500Pa Comfort
VRU-M1-BAC PositionControl(Open-Loop) Δpsensor,integratedM1diaphragmsensor0...600Pa
ComfortPolluted air
L/N/SM24A-VST Rotary actuator, default 5/10/20Nm,120s All ranges
LF/NF/SF24A-VST Rotary actuator, mechanical fail-safe
4/10/20Nm,120s,spring20s All ranges
LMQ24A-VST Rotary actuator, very fast running 4Nm,2.4s All ranges
NMQ24A-VST Rotary actuator, very fast running 8Nm,4s All ranges
NKQ24A-VST Rotary actuator, very fast running,electrical fail-safe
6Nm,4s All ranges
3
Position control: analogue/bus (setpoint) Feedback U5/bus (actual value)
0%min.
max.
100%
Position
Setpoint[Y]0% 100%
a) V′nomb) ∆p@V′nomc)
Volumetricflow/Δp/position
100%damperposition
Actual value [U5]
Applications, VAV-Universal26
Subject to technical modifications
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer.SeeVAV-Universal-VRUProductInformation:www.belimo.eu
Explanations/notes– Priority control p. 71– Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bussystem: Seeseparateinstructions
VAV-Universal-VRU in VRP-Mcompatibilitymode(MP)
Diagram
Analogue control [Mode 0...10/2...10 V]–Modulatingcontrol:0...100%rangeofrotation
1)OtherMPdevices(total8)
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V AC/DC 24 VMP-Master
MP
1)
A
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16A A
GND
D−D+
Control0/2...10VFeedback
MP-Bus
Mode RTU, BACnet MS/TP
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
27Applications, VAV-Universal
Subject to technical modifications
3
Parameter and tool overview for volumetric flow control position controlApplica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
VAV unit – manufacturer parameters (OEM values – not variable)
Application Volumetricflow Application setting r r r O
Designation Text Modeldesignationunit/damper(16Z.) r r – O
V′nom m3/h/l/s/cfm Volumetricflownominalvalue r r r O
Δp@V′nom Pa CalibrationVAVunit[38…500Pa] r r – O
SNactuator xxxxx-xxxxx-xxx-xxx Actuator serial number r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
max. % Damperposition0...100% r/w r/w r/w
min. % Damperposition0...100% r/w r/w r/w
Altitude compensation ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 0m CompensatedΔpandvolumetricflowvalues to set the altitude of installation (abovesealevel)
r/w r/w – E
Control function VAV/CAV VAVcontrolinactive(Open-Loop) r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable Settingfordampercontrol r/w r/w – E
Feedbacktype Volumetricflow/Δp/position Volume/Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O–OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
Applications, VAV-Universal28
4
29Applications, VAV-Universal
Page
Brief description30
Principle diagram
Function diagram31
Device selection
Diagram 32
Parameter and tool overview 33
Duct pressure control STPVRU-D3-BAC/VRU-M1-BAC
4
Applications, VAV-Universal30
Subject to technical modifications
Brief descriptionDuct/line pressure control–Variableoperation(STP) P′min...P′max
–Constantpressurecontrol(STP) P′min/P′max
damperCLOSED/damperOPEN
Duct pressure control STP
Duct and line pressure control in ventilation systems–Storeyline– Pre-pressure, control e.g. for active cooling ceiling systems
TheVAV-UniversalVRU-...controlunitcontrols theductpressure required fortheapplication.Pressurefluctuationsintheairductsystemaredetectedandautomatically corrected.Thefollowingvariantsareavailable incombinationwiththeactuatorsolutionoptimally suited to the application:–VRU-D3-BACoperatingrange38…500Pa–VRU-M1-BACoperatingrange38…600PaThe damper position is available for DCV applications via the selected bus system(FanOptimiserfunction).
Control setting, see Commissioning room/duct pressure applications page 73
Principle diagram
Illustration example
Duct pressure controller
Measurement point [+]
Referencepoint[−]
31Applications, VAV-Universal
Subject to technical modifications
Control functions–P′min Pressure level 1–P′max Pressure level 2–P′min…P′max Variableoperation(STP)
–Localoverride(z1/z2) Motorstop,damperOPEN,P′max,damperCLOSED
–Control analogue0…10V/2…10V, Modbus 1), BACnet 1), MP-Bus1) Hybrid mode possible
Max.hoselineforD3sensor(VRU-D3-BAC)The pressure drop in themeasurement signal cable generates ameasuring error ofmaximum2.5%.Useof theVRU-M1-BAC is recommended for appli- cationswithmeasurementsignalcables>20m.
Device selectionProduct type from Belimo Function Sensor/actuator characteristic Field of application
VRU-D3-BAC Duct pressure controller- lower control limit 38 Pa
Δpsensor,integratedD3flowsensor0...500Pa Comfort
VRU-M1-BAC Duct pressure controller- lower control limit 38 Pa
Δpsensor,integratedM1diaphragmsensor0...600Pa
ComfortPolluted air
L/N/SM24A-VST Rotary actuator, default 5/10/20Nm,120s All ranges
LF/NF/SF24A-VST Rotary actuator, mechanical fail-safe
4/10/20Nm,120s,spring20s All ranges
4
Function diagram
Δp control: Y/bus (setpoint) Feedback U5/bus (actual value)
0%
P'm
in (<
P'm
ax)
P 'm
ax (>
P'm
in)
100%
a) P'nomb)
100%
38 Pa
P'max
P'min
0% 100%
Air duct pressure Δp/position
Actual value [U5]Setpoint[Y]
100%damperposition
Rang
e 1)
Rang
e 1)
1)Note:Thecontrollimit/nominalvoltagerangeSTPisunderrevision.(Release:3rdquarter2021)
Applications, VAV-Universal32
Subject to technical modifications
Diagram
Analogue control [Mode 0...10/2...10 V]–Modulatingoperation:P′min...P′max
Analogue control [Mode 2...10 V]–Stepmode:damperCLOSED/P′min/P′max
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
min
.m
ax.
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V AC/DC 24 VMP-Master
MP
1)
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16
GND
D−D+
Control0/2...10VFeedback
FeedbackDamperCLOSED
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer. SeeVAV-Universal-VRUProductInformation:www.belimo.eu
Explanations/notes– Priority control p. 71– Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bussystem: Seeseparateinstructions
VAV-Universal-VRU in VRP-Mcompatibilitymode(MP)
1)OtherMPdevices(total8)
MP-Bus
Mode RTU, BACnet MS/TP
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
33Applications, VAV-Universal
Subject to technical modifications
Parameter and tool overview for duct pressure control STPApplica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) STP
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
Pressure control damper – manufacturer parameters (OEM values – not variable)
Application Air duct pressure Application setting r r r O
Designation Text Modeldesignationdamper(16Z.) r r – O
P′nom Pa NominalvalueP′nom
VRU-D338…500PaVRU-M138...600Pa
r r r O
SNactuator xxxxx-xxxxx-xxx-xxx Actuator serial number r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
P′max Pa(ZTH%) 38Pa…100%P′nom 2)
ΔpstepP′maxr/w r/w r/w
P′min Pa(ZTH%) 38Pa…100%P′nom 2)
ΔpstepP′minr/w r/w r/w
Altitude compensation 1)
ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 1) 0m CompensatedΔpvaluetosetthe altitudeofinstallation(abovesealevel)
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable Settingformodulatingcontrol r/w r/w – E
Feedbacktype Δp/position Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
4
1)OnlyforVRU-D3-BAC2)Lowercontrollimit:38Pa(asof31.03.2021). Note:Thecontrollimit/nominalvoltagerangeSTPisunderrevision. (Release:3rdquarter2021)
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).
Permissions: [O–OEM,manufacturermode]–VRUcontrollersarecalibratedandparameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]–FunctionallyrelevantsettingsareonlyaccessibleviatheExpertModeoftheBelimoAssistantApp.
Applications, VAV-Universal34
5
35Applications, VAV-Universal
Page
Brief description36
Principle diagram
Function diagram38
Device selection
Diagram 39
Parameter and tool overview 41
Room-pressure control RPVRU-M1R-BAC
5
Applications, VAV-Universal36
Subject to technical modifications
Brief descriptionRoom-pressurecontrolRP,suitable for roomswithnon-critical leakagerates/overflows–Modulating P′min ...P′max/Motor stop–Stepmode P′min /P′max/damperCLOSED/damperOPEN/Motorstop
Room-pressure control RP
Ventilationsystems–withnon-critical leakagerates–fordefinedpositiveor negative room-pressure conditions:–Leakagerateof>5...10%V’supply
–RoomtightnessclassaccordingtoVDI2083-19;Class0and1– Room and zone applications, e.g. with odour nuisance in restaurants, smokingrooms
– Room applications with polluted extract air, e.g. extract air in commercialkitchens
Theroom-pressurecontroller–VRU-M1R-BACApplication[RP]–comparesthepressure in the room relative to the reference value and controls the control damper to the adjusted room-pressure setpoint. With actuator solution optimally suited to the application.TheoppositeVAVunitisresponsiblefortheairexchangeraterequiredfortheroom, e.g. external room temperature or air quality controller.
Control setting, see Commissioning room/duct pressure applications page 73
Illustration example
Setpointvolumetricflow,e.g.room-temperature or air-quality controller
-+
A
SUPunitVAV/CAV
VAV-Universal
VAV-Compact
or
Also in combination with VAV-Compact
Referencepoint[−]
Measurement point [+]
Principle diagram
37Applications, VAV-Universal
Subject to technical modifications
Requirements (applies to positive and negative room-pressure applications)– VRU-M1R-BAC Room-pressure application [RP] with sensorrange−75…75Pa
–Measurementroom Connectpressurelinetothe(+)ofthe VRU-M1R-BAC
–Referenceroom Connectpressurelineto(−)oftheVRU-M1R-BAC Room-pressure – Operation mode (positive/negative pressure)If necessary, the room pressure can be switched from positive to negative pressure(pressurelinesremainunchanged!):Forthispurpose,theP′nom/P′max/P′min are mirrored in the negative range.Example:P′min10Pabecomes−10Pa.Thechangeovertakesplaceat:– Analogue control/MP-Bus Belimo Assistant App– Modbus/BACnet Belimo Assistant App or Command "OperatingMode"
– Control functions–P′min Room-pressure setpoint 1 P′max Room-pressure setpoint 2 (stepmodeormodulatingcontrol)–Applicationarea SUP-sideorETA-sideassembly
arrangement– Room-pressure mode Positive/negative pressure
– Door monitoring – Motor stop Actuatorremainsincurrentpositionwhendoorisopen(z2)
–"OperationMode"positive/negativepressure Changeovervia"OperationMode"busorAssistantApp,PC-Tool
–Localoverride(z1/z2) Motorstop,damperOPEN,P′max,damperCLOSED
–Control:analogue0…10V/2…10V,Modbus1), BACnet 1), MP-Bus
5
1) Hybrid mode possible
Applications, VAV-Universal38
Subject to technical modifications
Device selectionProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP ETA
VRU-M1R-BAC Room-pressure controller Δpsensor,integratedM1diaphragmsensor−75...75Pa
Comfort, polluted air
L/N/SM24A-VST Rotary actuator, default 5/10/20Nm,120s All ranges
LF/NF/SF24A-VST Rotary actuator, mechanical fail-safe
4/10/20Nm,120s,spring20s All ranges
LMQ24A-VST Rotary actuator, very fast running 4Nm,2.4s All ranges
NMQ24A-VST Rotary actuator, very fast running 8Nm,4s All ranges
NKQ24A-VST Rotary actuator, very fast running,electrial fail-safe
6Nm,4s All ranges
Foroperationinthenegative-pressurerange,P′nom/P′max/P′min are mirrored in the negative range.Example:+Positivepressure: P′min5Pa/P′max10Pa,becomes−Negativepressuresetting: P′min−5Pa/P′max−10Pa
Function diagram
Positive room pressure Changeover operation: positive/negative pressure
50 Pa
0 Pa
–50 Pa
0 100%
0 100%
a) P'momb)
50 Pa
0 Pa
–50 Pa
0 100%
P'min– P'max
–
P'nom–
P'min
P'max
P'nomP'max
P'nom
P'min
Feedback U5/bus (actual value)
Setpoint[Y]
Negativepressure
Tool/Bus:OperationMode
Tool/Bus:OperationMode
Positive pressure Positive pressure
Actual value [U5]
Δproom
ΔproomΔproom
100%damperposition
Setpoint[Y]
39Applications, VAV-Universal
Subject to technical modifications
Diagram
5
Analogue control [Mode 0...10/2...10 V]–Modulatingoperation:P′min...P′max
Analogue control [Mode 0...10/2...10 V]–Stepmode:P′min /P′max
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer. SeeVAV-Universal-VRUProductInformation:www.belimo.eu
1)OtherMPdevices(total8)
A
A
A
A 1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
max
.m
in.
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V AC/DC 24 VMP-Master
MP
1)
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16
GND
D−D+
Control0/2...10VFeedback
Feedback
Motor stop
Motor stop
Motor stop
Motor stop
MP-Bus
Mode RTU, BACnet MS/TP
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
Applications, VAV-Universal40
Subject to technical modifications
Explanations/notesReference A pressure-stable environment is a prerequisite for measurementfor thereferencemeasuringpoint[−]connection,asthishas the[−]connection a direct influence on the room-pressure control.
Anypressurefluctuationofthereferenceistransmitted to the room to be controlled. A pressure-controlled anteroomasa referencemakes reliable room-pressurecontrol impossible.
An environment isolated from the ventilation system - no pressure-controlled or volume-controlled rooms - provides this prerequisite.
Measurementsignal To minimise the influence of the measurement signal cables cables,thesignalcablelengthsshouldbekeptasshort
as possible.
Doorswitch The VRU-M1R can be equipped with a "Motor Stop" command to prevent the damper actuator from moving to the end position when the door is opened.
Switchdesign: Noteperformancedataofinputz2!
– Priority control p. 71– Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bussystem: Seeseparateinstructions
VAV-Universal-VRU in VRP-Mcompatibilitymode(MP)
41Applications, VAV-Universal
Subject to technical modifications
5
Parameter and tool overview for room-pressure control RPApplica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
Pressure control damper – manufacturer parameters (OEM values – not variable)
Application Room pressure Application setting r r r O
Designation Text Modeldesignationdamper(16Z.) r r – O
P′nom Pa NominalvalueΔpRP[5…75Pa] r r r O
SNactuator xxxxx-xxxxx-xxx-xxx Actuator serial number r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
P′max Pa(ZTH%) Δpstepmax.20…100%P′nom r/w r/w r/w
P′min Pa(ZTH%) Δpstepmin.0…100%P′nom r/w r/w r/w
Room-pressure mode Positive pressure/negative pressure
Roomoperatingmodeaseptic(+)/ septic(−)
r/w r/w – E
Application area Exhaustair/supplyair Mounting location of the control damper r/w r/w – E
Room-pressure cascade
OFF In connection with the room-pressure cascade
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable SettingformodulatingcontrolP′min ...P′max r/w r/w – E
Feedbacktype Δp/position Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O– OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
Applications, VAV-Universal42
6
43Applications, VAV-Universal
Page
Brief description44
Principle diagram
Function diagram 45/46
Device selection 46
Diagram 47
Parameter and tool overview 48/49
Room-pressure – VAV unit with bypass control RPVRU-D3-BAC/VRU-M1-BAC, VRU-M1R-BAC
6
Applications, VAV-Universal44
Subject to technical modifications
Brief descriptionRoom-pressure volumetric flow bypass damper control for rooms with low leakagerate/overflow:<A><B>VolumetricflowVAV/CAV V′min...V′max
VRU-D3-BAC/VRU-M1-BAC [VAV]<C>Room-pressurebypassdamper P′min...P′max
VRU-M1R-BAC[RPC]−75...75Pa
Room-pressure – VAV unit with bypass control RP
Principle diagram
Illustration example
Also in combination with VAV-Compact
C
A B ExtractairVAVunit
Bypass room pressure
SUPunitVAV/CAV
Volumetricflowsetpoint
Referencepoint[−]
Measurement point [+]
Ventilationsystemswithdefinedpositiveornegativeroompressureforroomswithlowleakagerate/overflow.–Leakagerateof<5%fromV’supply
–RoomtightnessclassaccordingtoVDI2083-19;Class2and3– Application examples for "sensitve room pressure applications"The two VAV units <A> <B> are responsible for the air exchange rate required for the room, e.g. external room temperature or air quality controller. Theroom-pressurecontrollerVRU-M1R-BAC<C>comparesthepressureintheroomwiththedefinedreferencevalueandthencontrolsthebypassdamperto thespecifiedroom-pressuresetpoint.Requirements(appliestopositiveandnegativeroom-pressureapplications)– VRU-M1R-BAC Room-pressure application [RP] with sensor range
−75…75Pa Extract-air-side-mountedorsupply-air-side-mounted (settingparameters)–Measurementroom Connectpressurelinetothe(+)ofVRU-M1R-BAC–Referenceroom Connectpressurelineto(−)oftheVRU-M1R-BAC
Control setting, see Commissioning room/duct pressure applications page 73
45Applications, VAV-Universal
Subject to technical modifications
Room-pressure – Operation mode (positive/negative pressure)If necessary, the room pressure can be switched from positive to negative pressure(pressure linesremainunchanged!):forthispurpose,P′nom/P′max/P′min are mirrored in the negative range. Example:P′min Thechangeovertakesplaceat:– Analogue control/MP-Bus Belimo Assistant App–Modbus/BACnet BelimoAssistantAppor"OperatingMode"
command VAV control functions <A> <B>–V′min...V′max Air exchange rate, CAV step mode or VAV
modulatingcontrolV′min...V′max
RP control functions <C>–P′min Room-pressure setpoint 1–P′max Room-pressure setpoint 2
(stepmodeormodulatingcontrol)–Applicationarea: SUPorETA-sideassemblyarrangement– Room-pressure mode Positive/negative pressure–"OperationMode"positive/negativepressure Changeovervia"OperationMode"busorAssistantApp,PC-Tool
–Localoverride(z1/z2) P′max,damperCLOSED,damperOPEN,motorstop
–Control:analogue0…10V/2…10V,Modbus1), BACnet 1), MP-Bus
6
1) Hybrid mode possible
Function diagram
VAV mode: analogue/bus (setpoint) Feedback U5/bus (feedback)
0%
V'm
in (<
V'm
ax)
V'm
ax (>
V'm
in)
100%
a) V'nomb) ∆p@V'nomc)
100%
20%
V'max
V'min
0% 100%
Volumetricflow Volumetricflow/Δp/position
Actual value [U5]
100%damperposition
Setpoint[Y]
Rang
e
Rang
e
Applications, VAV-Universal46
Subject to technical modifications
Device selection <A> <B> VAV unitsProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
VRU-D3-BAC Volumetricflowcontroller[VAV]<A> <B>
Δpsensor,D3flow 0…500Pa Comfort
VRU-M1-BAC Volumetricflowcontroller[VAV]<A> <B>
Δpsensor,M1diaphragm 0…600Pa
ComfortPolluted air
L/N/SM24A-VST Rotary actuator, default 5/10/20Nm,120s All ranges
Device selection <C> bypass damperProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
VRU-M1R-BAC Room-pressure controller [RP] <C> Δpsensor,M1diaphragm −75…75Pa
ComfortPolluted air
L/N/SM24A-VST Rotary actuator, default 5/10/20Nm,120s All ranges
LMQ24A-VST Rotary actuator, very fast running 4Nm,2.4s All ranges
NMQ24A-VST Rotary actuator, very fast running 8Nm,4s All ranges
NKQ24A-VST Rotary actuator, very fast running electrical fail-safe
6Nm,4s All ranges
Function diagram
Positive pressure Changeover positive: overpressure/negative pressure
50 Pa
0 Pa
–50 Pa
0 100%
0 100%
a) P'momb)
50 Pa
0 Pa
–50 Pa
0 100%
P'min– P'max
–
P'nom–
P'min
P'max
P'nomP'max
P'nom
P'min
Feedback U5/bus (actual value)
For operation in the negative-pressure range, P′nom/P′max/P′min are mirrored in the negative range.Example: + Positive pressure setting: P′min5Pa/P′max10Pa,becomes−Negativepressuresetting: P′min−5Pa/P′max−10Pa
Δproom
Setpoint[Y]
Positive pressure
Tool/Bus:Operatingmode
Setpoint[Y]
Actual value [U5]
100%damperposition
Positive pressure
Negativepressure
Tool/Bus:Operatingmode
Δproom
Δproom
47Applications, VAV-Universal
Subject to technical modifications
Diagram
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer.SeeVAV-Universal-VRUProductInformation:www.belimo.eu
6
Analogue control [Mode 0...10/2...10 V]–Modulatingoperation:P′min...P′max
Analogue control [Mode 2...10 V]–Stepmode:damperCLOSED/P′min/P′max
1)OtherMPdevices(total8)
Explanations/notes– Priority control p. 71 – Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bus system: Seeseparateinstructions
VAV-Universal-VRU in VRP-Mcompatibilitymode(MP)
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
min
.m
ax.
min
.m
ax.
A
B
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V AC/DC 24 VMP-Master
MP
1)
A
B
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16B
A
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V AC/DC 24 V
C C
C
B
A
C
GND
D−D+
Control0/2...10V
Control0/2...10V
Feedback
Feedback
Feedback
Feedback
Feedback
FeedbackDamperCLOSED
DamperCLOSED
MP-Bus
Mode RTU, BACnet MS/TP
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
Applications, VAV-Universal48
Subjecttotechnicalmodifications
Parameter and tool overview for VAV unit <A> <B>Applica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
VAV unit – manufacturer parameters (OEM values – not variable)
Application Volumetricflow Application setting r r r O
Designation Text Modeldesignationunit/damper(16Z.) r r – O
V′nom m3/h/l/s/cfm Volumetricflownominalvalue r r r O
Δp@V′nom Pa CalibrationVAVunit[38…500Pa] r r – O
SNactuator xxxxx-xxxxx-xxx-xxx Serialnumberoftheconnectedactuator r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
V′max m3/h/l/s/cfm(ZTH%) V′max -operatingvolumetricflow20…100%V′nom
r/w r/w r/w
V′min m3/h/l/s/cfm(ZTH%) V′min - operatingvolumetricflow0…100%V′nom
r/w r/w r/w
Altitude compensation ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 0m CompensatedΔpandvolumetricflowvalues to set the altitude of installation (abovesealevel)
r/w r/w – E
Function VAV/CAV/position control Control function r/w r/w – E
Room-pressure cascade
OFF VAV: secondary circuit room-pressure cascade
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
Setpointoffset 0% VAV:±5%compensationETAunit(roombalance)
r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable SettingformodulatingcontrolV′min…V′max r/w r/w – E
Feedbacktype Volumetricflow/Δp/position Volume/Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
49Applications, VAV-Universal
Subject to technical modifications
Parameter and tool overview for room-pressure bypass damper <C>Applica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) RP
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
Pressure control damper – manufacturer parameters (OEM values – not variable)
Application Room pressure Application setting r r r O
Designation Text Modeldesignationdamper(16Z.) r r – O
Δp′nom Pa NominalvalueΔpRP[5…75Pa] r r r O
SNactuator xxxxx-xxxxx-xxx-xxx Serialnumberoftheconnectedactuator r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./ adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess r r – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
P′max Pa(ZTH%) Δpstepmax.20…100%P′nom r/w r/w r/w
P′min Pa(ZTH%) Δpstepmin.0…100%P′nom r/w r/w r/w
Room-pressure mode Positive pressure/negative pressure
Room operating mode positive [+]/ negativepressure[−]
r/w r/w – E
Application area Exhaustair/supplyair Mounting location of the bypass damper r/w r/w – E
Room-pressure cascade
OFF in connection with the room-pressure cascade
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable SettingformodulatingcontrolP′min…P′max r/w r/w – E
Feedbacktype Δp/position Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
6
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O–OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
Applications, VAV-Universal50
Explanations/notesReference A pressure-stable environment is a prerequisite for measurementfor thereferencemeasuringpoint[−]connection,asthishas the[−]connection a direct influence on the room-pressure control.
Anypressurefluctuationofthereferenceistransmitted to the room to be controlled. A pressure-controlled anteroomasa referencemakes reliable room-pressurecontrol impossible.
An environment isolated from the ventilation system – no pressure-controlled or volume-controlled rooms – provides this prerequisite.
Measurementsignal To minimise the influence of the measurement signal cables cables,thesignalcablelengthsshouldbekeptasshort
as possible.
7
Subjecttotechnicalmodifications
51Applications, VAV-Universal
Page
Brief description52
Principle diagram
Function diagram 53
Device selection 55
Diagram 56
Parameter and tool overview 58-60
Volumetric flow and room-pressure cascade control [RPC]VRU-D3-BAC/VRU-M1-BAC, VRU-M1R-BAC
7
Applications, VAV-Universal52
Subject to technical modifications
Brief descriptionRoom-pressurevolumetricflowcascadecontrolconsistingof<A>Room-pressurecascadecontroller:VRU-M1R-BAC[RPC]−75...75Pa<B>Volumetric-flowcascadecontroller:VRU-D3-BAC/VRU-M1-BAC[VAV]<C>Volumetric-flowcontroller:VRU-D3-BAC/VRU-M1-BAC[VAV]
Volumetric flow and room- pressure cascade control [RPC]
Principle diagram
Illustration example
A
BC
-+
S1 YY
SUPunitVAV/CAV
Room-pressure cascadePrimary control loop
ExtractairVAVunitSecondarycontrolloop
Volumetricflowsetpoint
Measurement point [+]
Referencepoint[−]
U5
Ventilationsystemswithdefinedpositiveornegativeroompressureinroomswith low leakage rates. Tight rooms place higher demands on the control because the room leakage is too low, which means that the usual volumetricflowtolerancescannotbecompensated.Thisplaceshighdemandson the control equipment. For this purpose, the VAV unit <B> is operated with an additional room-pressure controller <C> as a so-called room-pressure volumetric-flowcascade.–RoomtightnessclassaccordingtoVDI2083-19;Class1
Thecurrentlyrequiredairexchangerate(roomtemperature,airquality,etc.)isswitched to the two VAV controllers <B> and <C>. In addition, the output signal of the room-pressure controller <A> [primary control loop] is switched to the VAV controller <B> [secondary control loop]. The volumetric flow of the VAV controlleriscorrectedby±20%tomaintainthedesiredroompressure.Duetothe limited influenceof the roompressureon the extract air volumetric flowcontroller,theinfluenceislimitedwhenthedoorisactuated.Thedamperisnotmovedtotheendpositionandminimisestheinfluencebyclosingthedoor.
Control setting, see Commissioning room/duct pressure applications page 73
53Applications, VAV-Universal
Subject to technical modifications
Function diagram
7
Option– Changeover operation: positive/negative pressure
<A> Primary control-loop room pressure– Positive pressure
50 Pa
0 Pa
–50 Pa
0 100%
∆p < w ∆p = w ∆p > w
+ 4.0
6.0
– 4.0
U50 100%
a) V'momb) ∆p@V'momc)
0 100%
V'm
in (<
V'm
ax)
20%
V'max
V'min
100% V'nom
0 100%
V'm
in (<
V'm
ax)
20%
V'max
100%
50 Pa
0 Pa
–50 Pa
0 100%
V'min
P'max
P'nom P'max
P'nom
P'min
P'nom–
P'min– P'max
–
P'min
V'm
ax (>
V'm
in)
V'nom
V'm
ax (>
V'm
in)
Δproom
Volumetricflow
Volumetricflow/Δp/position
Setpoint[Y]
Setpoint[Y]
Actual value [U5]
Positive pressure
Tool/Bus:Operatingmode
Setpoint[Y]
Actual value [U5]
Room pressure
100%damperposition
Positive pressure
Negativepressure
Tool/Bus:Operatingmode
Δproom
Volumetricflow
Cascade signal [V]
<B> Primary control-loop VAV-unit extract air
Control:Y/bus(setpoint,inputS1)
Feedback [U5] (also in bus mode)Cascade signal [6...±4 V]
<C> VAV mode: Y/bus (setpoint)
Feedback [U5]/bus (actual value)
Rang
e
Rang
e
Rang
e
Rang
e
Applications, VAV-Universal54
Subject to technical modifications
Requirements (positive and negative room-pressure applications)– Room-pressure controller <A> Room-pressure cascade controller,
VRU-M1R-BAC 1),sensorrange−75…75Paapplication [room pressure] Application area: [extract air/supply air] Room-pressurecascadeparameter:[ON]
– Measurement signal Measurement room: cables<A> Connectpressurelineto(+)
Reference point: Connectpressurelineto(−)
–VAVunit<B> VAVunit–volumetricflowcascade, VRU-D3/M1-BAC Application: [VAV] Room-pressurecascadeparameter:[ON]
– VAV unit <C> VAV unit – application: [VAV], VRU-D3/M1-BAC Application: [VAV] Room-pressurecascadeparameter:[OFF]
1) Restrictions – MP-Bus 1) Thecascadepressurecontroller[A]cannotbeintegratedinto
an MP-Bus system.– Hybrid mode 1) In hybrid mode, the U5 signal is not available for the cascade
pressure controller <A>.–SensorinputS1 SensorinputS1isnotavailableforthecascadevolumetric
flowcontroller[B].
Room-pressure – Operation mode (positive/negative pressure)If necessary, the room pressure can be switched from positive to negative pressure(pressurelinesremainunchanged!):– Analogue control/MP-Bus Belimo Assistant App–Modbus/BACnet BelimoAssistantAppor"OperatingMode"
commandControl function room-pressure cascade controller <A>–P′min Room-pressure setpoint 1–P′max Room-pressure setpoint 2–Applicationarea Extractair/supplyair– Room-pressure mode Positive/negative pressure
VAV control functions <B> <C>–V′min...V′max Air exchange rate, CAV step mode or VAV
modulatingcontrolV′min...V′max
Localoverride(z1/z2)–Room-pressurecontroller<A>P′max –VAVcontroller<B>,<C> V′max/damperCLOSED/damperOPEN/motor
stop
Control –Analogue0…10V/2…10V,Modbus2), BACnet 2), MP-Bus 3)2) Hybrid mode possible 3)Thecascadepressurecontroller<A>cannotbeintegratedintotheMPsystem.
55Applications, VAV-Universal
Subject to technical modifications
Device selection <B> <C> VAV unitsProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
i)VariantΔpsensor:D3flow(dynamic)
VRU-D3-BAC VAV controller extract air <B> [cascade]
Δpsensor,integrated D3flowsensor Comfort
VRU-D3-BAC VAV controller supply air <C> Δpsensor,integrated D3flowsensor Comfort
ii)VariantΔpsensor:M1diaphragm(static)
VRU-M1-BAC VAV controller extract air <B> [cascade]
Δpsensor,integratedM1 diaphragm sensor
ComfortPolluted air
VRU-M1-BAC VAV controller supply air <C> Δpsensor,integratedM1 diaphragm sensor
ComfortPolluted air
L/N/SM24A-VST Rotary actuator, default 4/10/20Nm,120s All ranges
NF/SF24A-VST Rotary actuator,mechanical fail-safe
10/20Nm,120s,spring20s All ranges
LMQ24A-VST Rotary actuator, very fast running 4Nm,2.4s All ranges
NMQ24A-VST Rotary actuator, very fast running 8Nm,4s All ranges
NKQ24A-VST Rotary actuator, very fast running electrical fail-safe
6Nm,4s All ranges
7
Device selection <A> room-pressure cascade controllerProduct type from Belimo Function Sensor/actuator characteristic Field of application SUP unit ETA unit
VRU-M1R-BAC Room-pressure cascade controller <A>
ΔpsensorM1diaphragm−75...75Pa
ComfortPolluted air
Applications, VAV-Universal56
Subject to technical modifications
DiagramAnalogue controlRoom-pressurecascade P′minconstantΔpVolumetricflow [mode0...10/2...10V]–Operatingvolumetricflow V′min...V′max
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V
9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V
MP-Master MP
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
A
B 1 2 3 5 6 7 8
C
A
B
C
A
B
C
GND
D−D+
GND
D−D+
GND
D−D+
Modbus RTU, BACnet MS/TPRoom-pressurecascade P′minconstantΔpOperatingvolumetricflow V′min...V′max
–Operatingvolumetricflow V′min...V′max
Note:Inhybridmode,thefeedbacksignalisnotavailablefortheroom-pressure controller <A>.
MP-BusRoom-pressurecascade P′minconstantΔpVolumetricflow V′min...V′max
Note:Theroom-pressurecontroller<A>cannotbeintegratedintothe MP-Bus system.
Room-pressure cascade primary control loop– VRU-M1R-BAC
VAV unit secondary control loop– VRU-D3-BAC– VRU-M1-BAC
Room-pressure cascade primary control loop– VRU-M1R-BAC
Room-pressure cascade controller– VRU-M1R-BAC
VAV unit secondary control loop– VRU-D3-BAC– VRU-M1-BAC
Control0/2...10VFeedback
Feedback
Volumetricflowcontroller– VRU-D3-BAC– VRU-M1-BAC
VAV unit secondary control loop– VRU-D3-BAC– VRU-M1-BAC
Volumetricflow controller– VRU-D3-BAC– VRU-M1-BAC
Volumetricflow controller– VRU-D3-BAC– VRU-M1-BAC
Note:SensorinputS1isoccupiedbythecascade signal.
Note:SensorinputS1isoccupiedbythecascade signal.
Control0/2...10VHybrid mode
Hybrid mode
Hybrid mode
FeedbackU0/2...10V
57Applications, VAV-Universal
Subject to technical modifications
Safety requirementsOnlyauthorisedspecialistsmaycarryout installation.Allapplicable legalandgovernment agency regulations must be complied with during use. Connection via an isolating transformer. SeeVAV-Universal-VRUProductInformation:www.belimo.eu
Explanations/notesReference A pressure-stable environment is a prerequisite for measurementfor thereferencemeasuringpoint[−]connection,asthishas the[−]connection a direct influence on the room-pressure control. Any
pressurefluctuationofthereferenceistransmittedtotheroom to be controlled. A pressure-controlled anteroom as a reference makes reliable room-pressure control impossible.
An environment isolated from the ventilation system – no pressure-controlled or volume-controlled rooms – provides this prerequisite.
Measurementsignal To minimise the influence of the measurement signal cables cables,thesignalcablelengthsshouldbekeptasshort
as possible.
VAV control It is recommended that the two VAV controllers <B> and a master controller- <C> be operated in a parallel circuit and not in a sequential circuit (master controller- sequential controller follower controller). Sequential circuits are not permitted in this application.
Overridecontrols Override controls acting on the damper actuator ETAunit mustbeconnectedtotheVRU<B>fortheETAunit.
Groundconnection Connectconnectingterminal1or6GND,respectively– Priority control p. 71 – Connection z1/z2 p. 61–Sensorintegrationbusmode p.61– VRP-M replacement in existing MP-Bussystem: Seeseparateinstructions VAV-Universal-VRU in
VRP-Mcompatibilitymode(MP)
7
Applications, VAV-Universal58
Subject to technical modifications
Parameter and tool overview for room-pressure cascade primary control loop <A>Applica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) RP
C
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
Pressure controller – manufacturer parameters (OEM values – not variable)
Application Room pressure Application setting r r r O
Designation Text Modeldesignationunit/damper(16Z.) r r – O
Δp@V′nom Pa NominalvalueΔp(5...75Pa) r r r O
NFCinterface ON/OFF NFCCommunicationforappaccess r r/w – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
P′max Pa(ZTH%) ΔpstepP′max 20…100%P′nom r/w r/w r/w
P′min Pa(ZTH%) ΔpstepP′min 0…100%P′nom r/w r/w r/w
Room-pressure mode Positive pressure Positive(+)/negativepressure(−) r/w r/w – E
Application area Exhaustair/supplyair Mounting location of the control/bypass damper
r/w r/w – E
Room-pressure cascade
ONONfast
ON:cascadefunctionactivatedONfast:activateswithVAVfastrunner
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable SettingformodulatingcontrolP′min...P′max r/w r/w – E
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O–OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
59Applications, VAV-Universal
Subject to technical modifications
Parameter and tool overview for VAV unit secondary control loop <B>Applica-tion Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
VAV unit – manufacturer parameters (OEM values – not variable)
Application Volumetricflow Application setting r r r O
Designation Text Modeldesignationunit/damper(16Z.) r r – O
Δp@V′nom Pa NominalvalueΔp(5...75Pa) r r r O
SNactuator xxxxx-xxxxx-xxx-xxx Serialnumberoftheconnectedactuator r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed 30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./ adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess r r/w – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
V′max m3/h/l/s/cfm(ZTH%) V′max-operatingvolumetricflow 20…100%V′nom
r/w r/w r/w
V′min m3/h/l/s/cfm(ZTH%) V′min-operatingvolumetricflow 0…100%V′nom
r/w r/w r/w
Altitude compensation ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 0m Compensatesvolumetricflowvalueatsetaltitudeofinstallation(abovesealevel)
r/w r/w – E
Function VAV/CAV Control function r/w r/w – E
Room-pressure cascade
ON VAV: secondary circuit room-pressure cascade
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
Setpointoffset 0%(mustbe0%!) VAV:±5%compensationETAunit(roombalance)
r/w r/w – E
ReferencesignalY 2...10V/0...10V/adjustable SettingformodulatingVAVcontrolV′min…V′max
r/w r/w – E
Feedbacktype Volumetricflow/Δp/position Volume/Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal r/w r/w – E
7
Applications, VAV-Universal60
Subject to technical modifications
Parameter and tool overview for opposite VAV unit <C> Applica-tions Tool
Authori-sation
Parameter/function Unit/value Function/description/(area) VAV/
CAV
Ass
ista
nt a
pp
PC
-Too
l
ZTH
EU
Expe
rt/O
EM
VAV unit – manufacturer parameters (OEM values – not variable)
Application Volumetricflow Application setting r r r O
Designation Text Modeldesignationunit/damper(16Z.) r r – O
V′nom m3/h/l/s/cfm Volumetricflownominalvalue
Δp@V′nom Pa NominalvalueΔp(5...75Pa) r r r O
SNactuator xxxxx-xxxxx-xxx-xxx Serialnumberoftheconnectedactuator r – –
Rotation direction ccw/cw Actuator direction of rotation setting r/w r/w – E
Range of rotation Adapted/programmed Actuator adapted/programmed 30...95°
r/w r/w – E
Power-on behaviour Noaction/synch./ adaptation
Actuator power-on behaviour r/w r/w – E
NFCinterface ON/OFF NFCCommunicationforappaccess – O
Parametrisation – Project specific settings
Position Text Systemdesignation(64Z./ZTH16Z.) r/w r/w r
V′max m3/h/l/s/cfm(ZTH%) V′max-operatingvolumetricflow 20…100%V′nom
r/w r/w r/w
V′min m3/h/l/s/cfm(ZTH%) V′min-operatingvolumetricflow 0…100%V′nom
r/w r/w r/w
Altitude compensation ON/OFF Switchfunctionon/off r/w r/w – E
Altitude of installation 0m Compensatesvolumetricflowvalueatsetaltitudeofinstallation(abovesealevel)
r/w r/w – E
Function VAV/CAV Control function r/w r/w – E
Room-pressure cascade
OFF(mustbeOFF!) VAV: secondary circuit room-pressure cascade
r/w r/w – E
Setpoint Analogue/bus Analogue and hybrid mode/bus r/w r/w – E
Setpointoffset 0%(mustbe0%!) VAV:±5%compensationETAunit(roombalance)
ReferencesignalY 2...10V/0...10V/adjustable SettingformodulatingVAVcontrolV′min…V′max
Feedbacktype Volumetricflow/Δp/ oosition
Volume/Δp/damperposition r/w r/w – E
FeedbackU 2...10V/0...10V/adjustable SettingUsignal
Legendr Tool:readwTool:write– Tool:DoesnotsupportparameterE OnlyvisibleinExpertMode
Availability: VAV-Universal components incl. replacement devices are only availablefrommanufacturersofVAVunits(OEM).Permissions: [O–OEM,manufacturermode]– VRU controllers are calibrated and
parameterised by the unit manufacturer according to the application andtheproject.Thesesettingscanonlybechangedbythe manufacturer. [E–ExpertMode]– Functionally relevant settings are only accessible viatheExpertModeoftheBelimoAssistantApp.
8
61Applications, VAV-Universal
Page
Brief description62
Principle diagram
Diagram63
Sensorintegration
ConnectionVRU-D3-BAC/VRU-M1-BAC/VRU-M1R-BAC
8
Applications, VAV-Universal62
Subject to technical modifications
Brief descriptionVRU-...-BAC – Connection and basic functions
Connection
Principle diagram
Illustration example
Overridecontrolz1/z2,seepage69
Control: analogue/bus24 VAC/DCSensorintegration(bus)
Explanations/notesSafetyrequirements Onlyauthorisedspecialistsmaycarryoutinstallation.All
applicable legal and government agency regulations must be complied with during use.
Connection via an isolating transformer.
Overridecontrolsz1/z2 Connection and priority control, see page 69
63Applications, VAV-Universal
Subject to technical modifications
Diagram
Analogue control [Mode 0...10/2...10 V]– Modulating operation: min...max.
Analogue control [Mode 2...10 V]–Stepmode:damperCLOSED/min./max.
1) OtherMPdevices(total8)z1/z2 see page 69 for connection and priority control
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
AC/DC 24 V
AC/DC 24 V
AC/DC 24 V
MP-MasterMP
GND
D−D+
1 2 3 5 6 7 8 9 10 11 12 13 14 15 161 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1)
min
.m
ax.
MP-Bus
Control0/2...10V
Feedback
FeedbackDamperCLOSEDNote:mode2...10V
Y:<0.3V [damperCLOSED]Y:2...10V modulatingcontrol[min...max.]
Sensor integration (Modbus, BACnet, MP-Bus)Connection of passive sensorse.g.Pt1000/Ni1000/...
Connection of active [email protected]°C
Connection of the switching contacte.g.Δpmonitor
Passive sensor Active sensor
Possiblevoltageranges:0...32V (resolution30mV)
Switchingcontacts:theswitchingcontact must be able to accurately switch a current of 16 mA at 24 V.
9 10 11 12 13 14 15 16 9 10 11 12 13 14 15 16 9 10 11 12 13
∆p
14 15 16
0...10 V
8
Mode RTU, BACnet MS/TP
Control0/2...10V
Hybrid mode
FeedbackU0/2...10V
Applications, VAV-Universal64
9
65Applications, VAV-Universal
Subject to technical modifications
Page
Brief description66
Principle diagram
Function
67Advantages/disadvantages
Recommendation
Diagram 68
SUP/ETA unit in conjunctionVRU-D3-BAC/VRU-M1-BAC
9
Applications, VAV-Universal66
Subject to technical modifications
Brief descriptionNetwork of SUP and ETA units, jointly controlled by building management technology/room controller/CAV circuit
SUP/ETA unit in conjunction
Principle diagram
A RC B
SUPUNIT
Y YReference signal
Building management technology/room controller
ETAUNIT
SUP/ETAparallelcontrol
A BRC
SUPUNIT
Y U5 Y
Master controller
Follower controllerReference signal
Sequencesignal
Building management technology/room controller
ETAUNIT
Sequentialcircuit
Illustration example
67Applications, VAV-Universal
Subject to technical modifications
Advantages/disadvantagesParallel control Sequential circuit
+Simpleplanning/ordering/installation/commissioning.−IdenticalsettingoftheoperatingvolumetricflowforSUPand ETAunits.
+Thetwounitsareinterchangeablefromacontrolengineeringpoint of view.
+Inletpressureinfluencesonthemastercontrollersideare "supported" by the follower controller.
+Theoperatingvolumetricflowissetonthemastercontroller;thefollower controller follows the setting automatically.
−Complicatedhandlingofordering,installation,wiring.−IftheSUPandETAunitsareswitchedduringinstallation,thentheoperatingvolumetricflowsettingsV′min...V′max must be adapted on both units and the signals must be corrected by adapting the wiring.
−Recognitionandrectificationofsystemerrors(SUP/ETAunitsswitched,wiringerrors)requiresexpertknow-how.
Recommendation
In practice, parallel circuits have proven to be much easier than sequentialcircuits.IfmonitoringintheSUPand/orETAductisrequired, this can be implemented much more easily and comprehensively with the bus systems commonly used today.
FunctionParallel control Sequential circuit
With parallel control, the reference signal of the higher-level room automation(buildingmanagementtechnology,roomtemperature orairqualitycontrol,CAVsteps)iswiredinparalleltotheVAV controllersoftheSUPandETAunit(connectingterminal3-Y).Forevenroombalance,theoperatingvolumetricflowsettingsV′min...V′max of both VAV units are set to identical values.Ifnecessary,theroom-pressurebalancecanbeadjustedwiththe"SetpointOffset"parameter.
Theoperatingvolumetricflowissetonthemastercontroller,thefollower controller follows the setting automatically. In a sequential circuit,thefollowercontrollerfollowsthecurrentvolumetricflowofthemastercontroller.Undersupplybythefanisdetected(e.g. unfavourablesimultaneityfactorsatfanfullload),andtheroom-pressure balance is maintained.For this purpose, the reference signal of the higher-level room auto-mation(buildingmanagementtechnology,roomtemperatureorairqualitycontrol,CAVsteps)iswiredtothemastercontrollerunit(connectingterminal3-Y).Thecurrentvolumetricflowofthe mastercontroller(connectingterminal5-U)servesasthe referencevariableofthefollowercontrollerunit(connectingterminal3-Y).Theoperatingvolumetricflowisusuallysetonthemastercontroller;thefollowercontrollerissetforthispurpose(foridenticalnominaldiameterorV′nom)atV′min0%/V′max100%.With different unit sizes, the setting on the follower controller is:V′min0%/V′max=V′max of the master controller. Ideally, the master controller is placed on the more important side of the system (SUPorETA).
9
Applications, VAV-Universal68
Subject to technical modifications
Diagram
Explanations/notesSafetyrequirements Onlyauthorisedspecialistsmaycarryoutinstallation.All
applicable legal and government agency regulations must be complied with during use.
Connection via an isolating transformer.
CAV steps see page 61
Overridecontrols The override commands must be wired to both VAV z1/z2 controllers.
Connection z1/z2 see page 61
Priority control see page 71
Parallel controle.g.VAVmode:V′min/V′max
Sequential circuite.g.VAVmode:V′min/V′max
AC/DC 24 V
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
A
RC
B
AC/DC 24 V
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
1 2 3 5 6 7 8 9 10 11 12 13 14 15 16
A
RC
B
Control0/2...10VFeedback
Feedback
Control0/2...10VFeedback
Feedback
10
69Applications, VAV-Universal
Page
Brief description
70Principle diagram
Diagram
Function71
Priority control
Local override control z1/z2 Priority controlVRU-D3-BAC/VRU-M1-BAC/VRU-M1R-BAC
10
Applications, VAV-Universal70
Subject to technical modifications
Brief descriptionLocaloverride-inputz1/z2Description of the priorities and the interaction of the individual regulation and control functions
Local override control z1/z2 Priority control
Diagram
9 10 11 12 13 14 15 16
Dampe
rOPE
N- M
otor
sto
pm
ax.
- Dampe
rCLO
SED
Principle diagram
Control: analogue/bus
Overridecontrolz1/z2
Illustration example
71Applications, VAV-Universal
Subject to technical modifications
FunctionThetwoinputsz1/z2areavailableforlocalinterventionorhigher-levelcontrolcommands. The interaction of the control and setpoint signals for each operating mode is shown in the table below.
Priority control
Prio
Analogue operationModulating 0/2…10 V: min…max.
Analogue operationStep mode: Damper CLOSED/min./max. MP-Bus Modbus BACnet
Hybrid mode (Modbus/BACnet)
1 z1 z1 z1 z1 z1 z1
2 z2 z2 z2 z2 z2 z2
3 a)Adaptationb)Synchronisation
a)Adaptationb)Synchronisation
Bus Watchdog Bus Watchdog Bus Watchdog Bus Watchdog
4 Setpointmin...max. Stepsdamper CLOSED/min./max.
a)Adaptationb)Synchronisation
a)Adaptationb)Synchronisation
a)Adaptationb)Synchronisation
a)Adaptationb)Synchronisation
5 – – Ysteps Damper CLOSED/min./max.
Bus override Bus override Bus override
6 – – Bus override Bus setpoint: min./max.
Bus setpoint: min...max.
YHybridsteps: Damper CLOSED/min./max.
7 – – Bus setpoint: min...max.
– – YHybridmodulating: Damper CLOSED/min./max.
Exception: application room-pressure volumetric flow cascade controlThe functionsdamperCLOSED/damperOPEN/(motorstop)arenotavailable with the room-pressure cascade controller <A> and must be connected to the VRU-D3-BAC/VRU-M1-BAC of the VAV unit extract air <B>.Seepage51
Explanations/notesSafetyrequirements Onlyauthorisedspecialistsmaycarryoutinstallation.All
applicable legal and government agency regulations must be complied with during use.
Connection via an isolating transformer.
CAVsteps ConnectionY,seepage61
10
Applications, VAV-Universal72
11
73Applications, VAV-Universal
Subject to technical modifications
Page
Brief description 74
Commissioning room/duct pressure applications – Controller setting
11
Applications, VAV-Universal74
Subject to technical modifications
A room or duct pressure regulation requires on-site adaptation of the control to the control section during commissioning of the system. Unbalanced control loops lead to malfunctions and increased wear of the actuators.Twoparametersareavailabletothecommissioningtechnicianforadaptationof the controller,
Twoparametersareavailabletothecommissioningtechnicianforadaptationof the controller, – Controller sensitivity – to adapt the controller speed to the control section–Controllerdeadband–thecontrolleroperatesassoonasthemeasuredΔp
value is outside the deadband
ThecontrolleroperatesassoonasthemeasuredΔpvalue isoutsidethesetdeadband (setpoint +/- deadband). This function protects the actuator fromcontinuousmotion(lifetime)andhelpsmaintainthepressurebalanceinstableconditions. If, for example, the Δp actual value falls below the setpoint, the actuator starts to correct the deviation after the value falls below the lower deadbandlimit.Todoso,thepressurecontrollerchangesthedamperpositionuntil the actual value corresponds to the setpoint.
Room pressure [VRU-M1R-BAC]Recommendedactuationtime:2.4...120s
Controller sensitivityIn tight rooms- low leakageratesand/orhighairexchangerates - itmaybenecessarytodampen(brake)thesensitivityofthecontroller toensurestableoperation.Toomuchdampingofthecontrol loop, inturn,cancausethecon-troller to become too slow to compensate for disturbances within a reasonable time.Theroompressuresetpointmustbeselectedsuchthattheroompressurebalance does not, unintentionally, shift to negative pressure or overpressure.
Range Function
0.1…10 Default=1.00.1 10timesslowerthannormal10 10timesfasterthannormal
Controller deadbandThesettingmustbeselectedsothattheactuatordoesnotruncontinuously.Deadbandsettings<5±Parequirepreciseverificationthatthesystemisrunningstable.
Range Function
±1…10Pa Default = ±5 Pa
Commissioning room/duct pressure applications – Controller setting
75Applications, VAV-Universal
Subject to technical modifications
Duct pressure [VRU-D3-BAC/VRU-M1-BAC]Recommendedactuationtime:120sIn order to operate the downstream control devices in a stable manner, the duct pressurecontrol isnormallyaslowcontrol loop.Thedefaultsettingwillworkwell for line pressure control systems with connected volumetric flow con- trollers(e.g.VAV-Compact).Ifmechanicalconstantvolumetricflowcontrollers(CAV)areused,thecontrollerspeedcanbeincreasedslightlyifnecessary.
Controller sensitivityThis parameter serves to adapt the controller speed to the downstream consumers.
Range Function
0.1…10 Default=1.00.1 10timesslowerthannormal10 10timesfasterthannormal
Controller deadbandThedeadbandmustbesetsothattheactuatordoesnotcontinuouslymove.
Range Function
±1…10%ofP'nom Default=±5%ofP'nom
Duct pressure control with VRU-D3-BAC:Thepressuredropinthemeasurementsignalcablegeneratesameasuringer-rorofmaximum2.5%.UseoftheVRU-M1-BACisrecommendedforappli-cati-onswithmeasurementsignalcables>20m.
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