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Page 1: Simplex Addressable FAS
Page 2: Simplex Addressable FAS

The following topics are presented in this presentation.

1. What is FAS?

2. Fundamental configuration of FAS

3. FACP

4. Power Supply

5. Initiating Devices

6. Notification Appliances

7. Building Safety Interfaces

8. Common Troubles

Page 3: Simplex Addressable FAS

1. What is FAS?

FAS – Fire Alarm System

•As the name implies FAS is a system that is designed to detect the unwanted presence

of fire by monitoring environmental changes associated with combustion.

•In general, a fire alarm system is either classified as automatic, manually activated, or

both.

•Automatic fire alarm systems can be used to notify people to evacuate in the event of a

fire or other emergency, to summon emergency services, and to prepare the structure

and associated systems to control the spread of fire and smoke.

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2. Fundamental configuration

•Fire alarm control panel: This component, the hub of the system, monitors inputsand system integrity, controls outputs and relays information.

•Power supply: Commonly the non-switched 120 or 240 Volt Alternating Currentsource supplied from a commercial power utility. In non-residential applications, abranch circuit is dedicated to the fire alarm system and its constituents.

•Initiating Devices: This component acts as input to the fire alarm control unit and areeither manually or automatically activated.

•Notification appliances: This component uses energy supplied from the fire alarmsystem or other stored energy source, to inform the proximate persons of the need totake action, usually to evacuate.

•Building Safety Interfaces: This interface allows the fire alarm system to controlaspects of the built environment and to prepare the building for fire and to control thespread of smoke fumes and fire by influencing air movement, lighting, process control,human transport and exit.

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3. FACP – Fire Alarm Control Panel

A fire alarm control panel (FACP), or fire alarm control unit (FACU), is an electricpanel that is the controlling component of a fire alarm system. The panel receivesinformation from environmental sensors designed to detect changes associated with fire,monitors their operational integrity and provides for automatic control of equipment, andtransmission of information necessary to prepare the facility for fire based on apredetermined sequence. The panel may also supply electrical energy to operate anyassociated sensor, control, transmitter, or relay.

There are four basic types of panels:

1. Coded panels

2. Conventional panels

3. Addressable panels

4. Multiplex systems.

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A Simplex 4100U Info ALARMaddressable fire alarm control panel.

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Addressable panels:

Addressable panels are usually much more advanced than their conventionalcounterparts, with a higher degree of programming flexibility and single point detection.Addressable fire alarm panels were introduced by many manufacturers during the microcontrollerboom in the mid 1980s. Examples include the Simplex 4100U.

The 4100U is available as a standalone system with one host panel, or as an expansivesystem with several remote back boxes, with or without multiple host panels. The type ofconfiguration used depends on the size of the site into which it is being installed.

The following types of configurations are offered:

Standalone. Comprised of one FACP and its assorted warning devices, initiating devices,and signaling line circuit devices.

MINIPLEX. A standalone system plus remote transponder cabinets, which allow foradditional slave modules to be used. Typically used for multi-level buildings and smallmulti-building applications.

Network. A multi-FACP system connected by network cards. Each panel maintains thestatus and control of its own circuit points while monitoring and controlling activity atother locations. Network nodes may perform similar tasks, or may be dedicated tospecific functions.

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Network Configuration:

The 4100 can be expanded to a network system by using network interface cards(NICs).When a NIC is installed into a 4100 host panel, it is used to connect to other networknodes. Nodes may consist of other host 4100 panels, or they may be completely different:Graphical Command Centers (GCCs), and Visual Command Centers (VCCs) are allexamples of what could be used as nodes.

A node is a self-sufficient CPU that controls appliances and devices, which also has thecapability of controlling and communicating with other nodes.

The network configuration supports two prevalent architectures (or wiring configurations):

1. Hub (or ring)

2. Star

A networked system can also use a combination of the two.

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Hub/Ring Configuration

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Components of Simplex FACP:1. CPU (Central Processing Unit)

2. Signaling Line Circuit Loops (SLC loops)

3. Network Interface Card (NIC)

4. System Power Supply (SPS)

1. CPU:As the name implies, this is the processing unit of FACP. It Process the

information got from the devices and perform the related operations.

Ex: The sensors provide an analog measurement that is digitally communicated tothe control panel where it is analyzed and an average value is determined andstored. An alarm and other abnormal condition is determined by comparing thesensors present value against its average value.

The CPU controls the overall FACP.

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• Analog sensors information is digitally communicated to the control panel viaMAPNET II or ID Net, two wire communication.

• Peak activity/sensor is stored to assist in evaluating specific locations. The alarm setpoint for each sensor is determined at the control panel.

• Alarm set point can be programmed for timed automatic sensitivity selection (such asmore sensitivity at night, less during day).

• The control panel can be programmed to provide multistage operation per sensor.Ex: A 0.2% level may cause a warning to prompt investigation while a 2.5% level mayinitiate an alarm.

• The control panel determines when individual sensors need cleaning. Dirty sensors orother sensors trouble will automatically be annunciated at the control panel and thatsensor’s base LED will light steadily.

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2. Signaling Line Circuit Loops (SLC loops):Communication between the control panels and intelligent addressable initiating,

monitor and control devices takes place through signaling line circuit, which can be wired tomeet the requirement of NFPA (National Fire Protection Association).

Panels usually have a number of signaling line circuit loops - usually referred to asloops or SLC loops - ranging between one and thirty. Depending on the protocol used, a loop canmonitor and control several hundred devices. Some protocols permit any mix of detectors andinput/output modules, while other protocols have 50% of channel capacity restricted todetectors/sensors and 1/2 restricted to input/output modules. Each SLC polls the devicesconnected, which can number from a few devices to several hundred, depending on themanufacturer.

•The Simplex 4100 and 4100U FACP have 10 SLC loops.

• The Simplex 4100 FACP can address up to 1000 devices.

• The Simplex 4100U FACP can address up to 2000 devices.

• Number of devices that can be connected to each SLC loop

Simplex 4100 – 127 devices

Simplex 4100U – 250 devices

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Each device on a SLC has its own address, and so the panel knows the state of eachindividual device connected to it. Common addressable input (initiating) devices include

• Fire Detectors

• Manual call points or manual pull stations

• Isolators

• ZAM (Zone Adaptor Module)

• IAM (Individual Addressable Module)

Fire Detectors and Manual call points or manual pull stations are explained in chapter5.

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Devices connected to the FACP through signaling line circuit

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Isolators:

Devices connected to the FACPusing Isolators.

4090-9117AU AddressablePower Isolator

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• The Isolator module protects the section of a transmission line fromshort circuits. The Isolator module is used in conjunction with theTransceiver.

• The Isolator modules are placed in series with transmission lines, wherethey monitor for short circuits. They are wired as a part of the loop withan Isolator, every so many feet or so many devices.

• In an event of a short circuit, 2 Isolator modules open, removing theshortened section of line from the channel. Both good sections of linewill be able to communicate with the rest of the system, one from theprimary side and one from the secondary side.

• ‘No Answer’ troubles will be indicated for the devices on the shortedside of the line.

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ZAM (Zone Adaptor Module):

ZAMs provide an addressable interface to conventional fire alarm zone circuit devicesincluding:

• Initiating devices (Monitor ZAM)

• Notification appliance circuits (Signal ZAM)

• Control relays (Control ZAM)

Monitor ZAMs: provide status monitoring and supervision of an initiating device circuit (IDC)zone and are used for circuits with non-addressable detectors and for other contact closures suchas water flow and tamper switches or non-addressable manual stations.

Signal ZAMs: supervise and operate 24 VDC notification appliances, speakers, and telephonecircuits.

Control ZAMs: provide addressable control functions such as elevator capture, HVAC control,pressurization fan control, and damper control.

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4090-9101 Zone AdaptorModule (ZAM)

ZAM Wiring

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IAM (Individual Addressable Module):

An individually addressable module that has both its power and its communicationssupplied by a two wire circuit. It provides location specific addressability to a single initiatingdevice or multiple devices by monitoring normally open, dry contacts. Closure of the monitoredcontacts initiates an alarm. An open in the initiating circuitry wiring will cause a trouble to bereported at the Fire Alarm Control Panel.

If the initiating device contacts are momentary, such as from a rate-of rise heatdetector, enabling the latch feature allows the IAM to latch the alarm condition until the system isreset. For applications where the contact closure latches, or if its condition needs to be tracked atthe control panel, non-latching operation may be enabled.

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4090-9118 Relay IAM (IndividualAddressable Module) with T-Sense

Input

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3. Network Interface Card (NIC):

The 4100 can be expanded to a network system by using network interface cards(NICs).When a NIC is installed into a 4100 host panel, it is used to connect to other networknodes.

Network communication is achieved via network interface cards. Each network noderequires a NIC. Once the FACP is a network node, it may be programmed to be fully in control ofother nodes, or to be fully passive or anywhere in between.

NICs uses the standard 4100 serial bus to communicate with the master. The NICconnects FACPs in a network allowing for communication between each panel via fiber, modemor twisted shielded pair wire.

The NIC is designed to be connected in a point-to-point arrangement, so that one wirefault does not cause the entire system to fail. The point-to-point arrangement provides the mostsecure and fault tolerant wiring possible.

Up to 2 media boards can be plugged into each NIC. The same NIC can use acombination of 2 types of media board.

Ex: NIC may have a wired media card connected to port1 and fiber optical media cardconnected to port2.

The NIC used media cards to connect to other NICS.

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4. System Power Supply (SPS):

The system power supply (SPS) is mains powered and has backup batteries that getswitched in on mains failure. It is the initial power source for the CPU and the host cabinet. TheSPS provides 24V card power to the CPU motherboard and the other cards. It also supplies 24Vpower on a separate bus to the outputs, e.g. Notification Appliance Circuits (NACs).

The SPS also has three on-board NACs that support reverse polarity supervision. Itprovides an IDNet channel, auxiliary power, an auxiliary relay, and it mounts and drives theAlarm Relay Card.

The SPS performs functions such as brownout detect, battery transfer, battery recharge,earth fault detection, and power limiting of outputs. It provides voltage and current information tothe CPU card, which can then be displayed at the user interface.

The 24Vdc bulk power on the SPS is unregulated, and is divided into three feeds, i.e.24V Card, 24V Signal, and 24V Aux Power.

The 27.3V regulated battery charger is powered from the bulk supply and is switchedoff during alarm. The batteries only get connected to the bulk supply when the mains supply fails.

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In expansion bays, power and data are distributed via the power distribution interface(PDI). The PDI is a wiring board with eight card slots, each of which can accommodate a 4-inch(102 mm) x 5-inch (127 mm) slave card. If motherboards are used, they must be mounted overthe PDI using metal standoffs.

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4. Power Supply

Commonly the non-switched 120 or 240 Volt Alternating Current sourcesupplied from a commercial power utility. In non-residential applications, a branchcircuit is dedicated to the fire alarm system and its constituents.

Secondary (backup) Power supplies: This component, commonly consisting ofsealed lead-acid storage batteries or other emergency sources including generators, isused to supply energy in the event of a primary power failure.

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5. Initiating Devices

This component acts as input to the fire alarm control unit and are either manually orautomatically activated.

• Manually activated devices: Break glass stations, Buttons and manual pull station areconstructed to be readily located (near the exits), identified, and operated.

• Automatically activated devices: can take many forms intended to respond to any number ofdetectable physical changes associated with fire: convected thermal energy; heat detector,products of combustion; smoke detector, combo detector (both heat and smoke detector).

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Manually activated devices:

The addressable Manual Call Point (MCP) provides a means to manuallyinitiate a fire alarm condition to the FACP c.i.e. via the channel. The channel providesthe communication link and power between the call point and FACP.

Activation of the MCP requires the frangible element to be broken, whichcauses contacts on a microswitch to close, initiating an alarm condition.

Call Point reset requires the fitting of a replacement frangible element. TheMCP features an integral red LED status indicator.

4099-9032 Manual Call Point

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Automatically activated devices:

Smoke Detector:A smoke detector is a device that detects smoke. Commercial, industrial, and mass

residential devices issue a signal to a fire alarm system.

Most smoke detectors work either by optical detection (photoelectric) or by physicalprocess (ionization), while others use both detection methods to increase sensitivity to smoke.

Smoke detectors in large commercial, industrial, and residential buildings are usuallypowered by a central fire alarm system, which is powered by the building power with a batterybackup.

Every 4 seconds, smoke sensors transmit output value based on their smoke chambercondition.

Smoke Detector

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Optical smoke detector:An optical detector is a light sensor. When used as a smoke detector, it includes a light

source (incandescent bulb or infrared LED), a lens to collimate the light into a beam, and aphotodiode or other photoelectric sensor at an angle to the beam as a light detector. In theabsence of smoke, the light passes in front of the detector in a straight line. When smoke entersthe optical chamber across the path of the light beam, some light is scattered by the smokeparticles, directing it at the sensor and thus triggering the alarm.

Optical smoke detectors are quick in detecting particulate (smoke) generated bysmoldering (cool, smoky) fires. Many independent tests indicate that optical smoke detectorstypically detect particulates (smoke) from hot, flaming fires approximately 30 seconds later thanionization smoke alarms.

They are less sensitive to false alarms from steam or cooking fumes generated inkitchen or steam from the bathroom than are ionization smoke alarms. For the aforementionedreason, they are often referred to as 'toast proof' smoke alarms.

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Optical Smoke Detector with the coverremoved.

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Ionization Smoke Detector:This type of detector is cheaper than the optical detector; however, it is sometimes

rejected because it is more prone to false (nuisance) alarms than photoelectric smoke detectors.

It can detect particles of smoke that are too small to be visible.

It includes radioactive americium (241Am). The radiation passes through an ionizationchamber, an air-filled space between two electrodes, and permits a small, constant currentbetween the electrodes. Any smoke that enters the chamber absorbs the alpha particles, whichreduces the ionization and interrupts this current, setting off the alarm.

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Heat Detector:A heat detector is a device that responds to changes in ambient temperature. Typically,

if the ambient temperature rises above a predetermined threshold an alarm signal is triggered. Inthe case of sprinkler systems, water will be released to extinguish the fire.

Heat detectors can also be further broken down into two main classifications ofactivation, "rate-of-rise" and "fixed." The most sophisticated units are activated by bothconditions.

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Rate-of-rise heat detectors

Rate-of-rise (ROR) heat detectors react to the sudden change or rise in ambienttemperature from a normal baseline condition. Any sudden temperature increase thatmatches the predetermined alarm criteria will cause an alarm. This type of heat detectorcan react to a lower threshold condition than would be possible if the threshold werefixed. A typical alarm may sound when the rate of temperature rise exceeds 12° to 15°F(6.7° to 8.3°C) per minute.

Fixed temperature heat detectors

This type of detector reacts when the ambient temperature reaches a fixedpoint. The most common fixed temperature point is 136.4°F (58°C). Recenttechnological developments have enabled the perfection of detectors that activate at atemperature of 117°F (47°C), providing increased time to escape.

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Combo Detector:

As the name implies it is a combination of Heat and smoke detectors.

Using the single combo detector we can detect both heat and smoke.

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6. Notification Appliances

A fire alarm notification appliance is an active fire protection component. Anotification appliance may use audible, visible, or other stimuli to alert the occupants ofa fire or other emergency condition requiring action. Audible appliances have been inuse longer than any other method of notification.

Example: Hooter – When ZAM gets the 24VDC it activates the Hooter.

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7. Building Safety Interfaces

This interface allows the fire alarm system to control aspects of the built environmentand to prepare the building for fire and to control the spread of smoke fumes and fire byinfluencing air movement, lighting, process control, human transport and exit.

Magnetic Smoke Door Holders: Wall or floor mounted solenoids or electromagnets controlledby a fire alarm system or detection component that magnetically secures spring-loaded self-closing smoke tight doors in the open position. Designed to de-magnetize to allow automaticclosure of the door on command from the fire control or upon failure of the power source,interconnection or controlling element. Stored energy in the form of a spring or gravity can thenclose the door to restrict the passage of smoke from one space to another in an effort to maintaina tenable atmosphere on either side of the door during evacuation and fire fighting efforts.

Duct Mounted Smoke Detection: Smoke detection mounted in such a manner as to sample theairflow through duct work and other plenums specifically fabricated for the transport ofenvironmental air into conditioned spaces. Interconnection to the fan motor control circuits areintended to stop air movement, close dampers and generally prevent the recirculation of toxicsmoke and fumes produced by fire into occupiable spaces.

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Fire Sprinkler Systems:A fire sprinkler system is an active fire protection measure, consisting of a water supply

system, providing adequate pressure and flowrate to a water distribution piping system, ontowhich fire sprinklers are connected.

These are different systems used in different places to put off accidental fires.

The most common fire sprinkler system is a wet pipe system which always has water init. The sprinkler heads have a heat sensitive element, most commonly a glass bulb filled withliquid that expand when exposed to heat, after a certain temperature is met , usually 160 degreesor more the glass bulb breaks and allows water to flow on the fire in a uniform water density.

The sprinkler system may have an alarm device that sounds an audible alarm in thebuilding, and/or call the fire department. The system may have a connection for the firedepartment to add to the automatic water supply.

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8. Common TroublesAlso known as "Defect". When held steady or flashing, it means that a trouble

condition exists on the panel. Trouble conditions are often activated by a contaminated smokedetector or an electrical problem within the system.

Trouble conditions are also activated by a zone being disabled (disconnected from thesystem), a circuit being disabled, low power on the backup battery, the disabling of a notificationappliance, the ground faults, or short or open circuits.

Usually the alarm panel's sounder will activate if a trouble condition exists, thougholder systems would sometimes activate a bell or other audible signal connected to the panel. In atrouble condition, the panel displays the zone or devices causing the condition.

The "Trouble" indicator goes out automatically when the situation causing the troublecondition is rectified and some panels have more specific indicators such as 'Trouble-PSU' whichshows when the panel itself is compromised and 'Trouble-Bell' which shows that the sounders arenot functioning correctly.

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