Transcript
Standard Technical Specification for an Analogue Addressable Fire Detection System FP1500 System Revision 0: July 2003
Aritech is a GE Interlogix brand. www.aritech.com Copyright © 2003 GE Interlogix B.V.. All rights reserved. GE Interlogix B.V. grants the right to reprint this manual for internal use only. GE Interlogix B.V. reserves the right to change information without notice.
CONTENTS 1
Scope ...................................................................................................................................................... 3
2
General Description............................................................................................................................... 3
3
Standards ............................................................................................................................................... 3
4
System Operation .................................................................................................................................. 3 4.1 Access Levels................................................................................................................................ 4 4.2 Self-Monitoring .............................................................................................................................. 4 4.3 Fire Operation................................................................................................................................ 4 4.4 Fault Operation.............................................................................................................................. 5
5
System Features .................................................................................................................................... 5 5.1 Panel Capacity .............................................................................................................................. 5 5.2 Device Types................................................................................................................................. 5 5.3 Device Identification ...................................................................................................................... 6 5.4 Device Status ................................................................................................................................ 6 5.5 Alarm Threshold ............................................................................................................................ 6 5.6 Alarm Verification .......................................................................................................................... 7 5.7 Line Monitoring .............................................................................................................................. 7 5.8 Memory Allocation ......................................................................................................................... 7
6
Signalling and Annunciation ................................................................................................................ 7 6.1 Panel Indicators............................................................................................................................. 7 6.2 Panel Display................................................................................................................................. 8 6.3 Panel Controls ............................................................................................................................... 8 6.4 General Outputs ............................................................................................................................ 8 6.5 Programmable Outputs ................................................................................................................. 9 6.6 Data Outputs ................................................................................................................................. 9 6.7 Programmable Inputs .................................................................................................................... 9 6.8 Panel Printers ................................................................................................................................ 9 6.9 Networking..................................................................................................................................... 9
7
Peripheral Panels................................................................................................................................. 10 7.1 Repeater Panels.......................................................................................................................... 10 7.2 Graphics Terminals ..................................................................................................................... 10
8
Programming ....................................................................................................................................... 10
9
Maintenance Functions....................................................................................................................... 11 9.1 Automatic Monitoring................................................................................................................... 11 9.2 Visual Monitors ............................................................................................................................ 11 9.3 Archive Facility ............................................................................................................................ 11 9.4 Zone Test Mode .......................................................................................................................... 11 9.5 Debug Mode ................................................................................................................................ 11 9.6 Remote Maintenance .................................................................................................................. 12
10
Detectors and Loop Devices .............................................................................................................. 12 10.1 General Specification .................................................................................................................. 12 10.2 Ionisation Smoke Detectors......................................................................................................... 13 10.3 Photoelectric Smoke Detectors ................................................................................................... 13 10.4 Heat Detectors............................................................................................................................. 13 10.5 Dual Photo-Electric/Heat Detectors............................................................................................. 14 10.6 Manual Call Point ........................................................................................................................ 14 10.7 Optical Beam Smoke Detector System ....................................................................................... 14 10.8 Flame Detectors .......................................................................................................................... 15 10.8.1 Infra-red flame detector................................................................................................ 15 10.8.2 UV Flame detector ....................................................................................................... 15 10.9 Sounder Control Unit ................................................................................................................... 15 ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 1
10.10 Zone Monitor Unit ........................................................................................................................ 15 10.11 I/O Units 15 10.12 Extinguishing Units ...................................................................................................................... 16 11
Software Control.................................................................................................................................. 17 11.1 Operating Programes .................................................................................................................. 17 11.2 Configuration Data....................................................................................................................... 17
12
Power Supply and Charger Unit......................................................................................................... 17
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 2
1 SCOPE This specification covers the general technical specifications and components of an analogue addressable fire detection and alarm system.
2 GENERAL DESCRIPTION The fire detection system and alarm system will consist of a central control unit connected to field devices such as fire detection devices, monitoring and control devices and annunciation devices located throughout the protected area. The control unit will continuously monitor the analogue status of all sensing devices and initiate action when a fire or smoke condition is present. The control panel will make all decisions regarding the state of the system from the information received from each field device. The operation of the system will be field configurable from the control panel via a keypad or Windows based software to suit the specific application. Future changes will be allowed via the same keyboard and/or software. This configuration will be maintained in the panel under power failure conditions, without the use of batteries. The control unit will have a front panel comprising of indicating LEDs, control keyboard and backlit LCD display, as described in detail later. The LCD display, together with the corresponding zone LEDs, will give details of any event that occurs in the system. Data ports will be provided for communicating with remote LCD repeaters, configuration software and graphics computers. The fire panels will have facilities for operating as stand-alone units or as part of a networked system.
3 STANDARDS The design of the fire detection system will be approved to European Standard EN54, Parts 2 and 4. The panel will be manufactured according to ISO9001 Standards.
4 SYSTEM OPERATION The system will be designed to operate with the minimum of operator training. Basic fire alarm functions will be completely self-explanatory. The occurrence of a fire or fault alarm will indicate all relevant information without operator intervention. In quiescent condition, the panel will have the “Power” indicator illuminated. The LCD display will show time and date as well as the site related information. The occurrence of a fire or fault signal, or a keyboard operation carried out by an operator, will not inhibit or delay the receipt of additional alarms. Should any part of the system be isolated or placed in a test mode, a LED on the front of the panel will illuminate to indicate the system’s abnormal status. This condition will also be indicated on the LCD display, together with the details and telephone number of the relevant service company or installer to be contacted for assistance. The normal operation of all other devices will not be affected in this state.
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 3
4.1
Access Levels Access to the system will be protected by ACCESS CODES. Access codes will be used to prevent unauthorised entry into the programming and control menus of the panel. It will be possible to assign 4 levels of access to up to 10 different users.
4.2
Self-Monitoring The control panel will be able to perform extensive automatic self-monitoring. If the control panel detects a fault, it will result in a fault indication being given by means of a common fault yellow LED. The control panel will continuously monitor the following:
4.3
•
Supply fault, mains failure
•
24 VDC auxiliary supply fault
•
Alarm bells open circuit
•
Alarm bells short circuit
•
Low battery
•
No battery connected
•
Printer disconnected
•
Communication fault
•
Earth fault
•
E²PROM memory blank check
Fire Operation Any fire alarm will cause the following actions to occur immediately: • The LCD to light up and display the following information: -
type of alarm loop number zone number sensor address number of alarms time and date of the alarm 20 characters of user programmable text
•
The common fire indicator and appropriate zone fire indicator will flash
•
The LED on the affected detector(s) will operate
•
The event will be logged in memory
•
Programmed relays will be triggered
•
The fire alarm will override any fault condition that might be present on the display
•
Sounder outputs will become active according to the immediate or delay parameters set
•
Sounders and bells will continue to operate until silenced by inserting a user password and pushing the silence alarm button
•
If the bells have been silenced they will become active again for any new fire alarm
•
Sounder control units will be sounded as programmed
•
Messages will be sent to the configured data ports and/or printer
•
Coincidence and zoned devices will be operated as programmed ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 4
4.4
•
The programmed I/O’s will be activated (including the inter panel I/O)
•
Messages will be sent to the configured repeater panels and graphic packages
Fault Operation A fault warning will cause the following actions to occur immediately: • The LCD to light up and display the following information: - type of alarm - loop number - zone number - sensor address - status - number of alarms - time and date - 20 characters of user programmable text
(if applicable) (if applicable) (if applicable)
•
The common fault and appropriate zone fault indicator (LED) will flash
•
The "general fault" relay will activate
•
The panel buzzer will sound intermittently
•
Inputs/outputs configured for fault will be operated, if applicable, messages will be sent to the configured repeater panels and graphics.
5 SYSTEM FEATURES Expanding or adding a network will be by means of plug-in modules that are automatically configured by the system.
5.1
Panel Capacity The fire panel will be able to operate up to two loops. Each loop will be capable of handling a maximum of 250 addressable devices. These devices may be either detectors (125 off) or controllers, monitors and input/output units (125 off) as described below. The loops can be open at the end (Class B), or routed back to the panel (Class A) to operate in closed loop configuration. Both wiring methods will allow spurs or branches. Each loop will consist of 1 pair (2 wires). The two loop wires only will power the sensors and carry data to and from the field devices by digitally encoded signals superimposed on the power voltage. There will be no pre-set order for addressing the devices. The devices will be addressed in any order appropriate to site conditions. The panel will not use soft addressing. All attached loop devices will be manual programmed by the installer. The installation order will be determined during commissioning and the control panel will have the facility to override the address order to re-check any device showing a tendency to the alarm condition
5.2
Device Types The panel will support at least the following types of sensors and monitors: Fire Sensors • Ionisation smoke •
Optical smoke
•
Optical-heat dual-sensor ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 5
•
Heat
Monitoring Controllers • Zone monitoring unit (one zone): Used to interface a conventional zone of detectors to the analogue addressable system •
Zone monitoring unit (four zone): Used to interface four conventional zones of detectors to the analogue addressable system
•
Isolator: For short circuit protection
•
Sounder control unit: Used to operate sounders in a zone
Input/Output Devices • Manual call point •
Input/Output unit: To monitor external alarms and conditions (open or closed switches), and control external devices from the loop via a potential free relay (common, normal open and normally closed contacts available).
•
Output unit: One or four potential free relay outputs with Common, Normally Open and Normally Closed connections
•
Switch monitor unit: for monitoring normally open or normally closed contacts
•
Gas control unit: for monitoring and controlling one gas area, including inputs for monitoring gas levels, manual activation and stop manual call points, and switching gas discharge outputs, control sounders and evacuation signs. All inputs and outputs will be supervised.
•
Loop powered sounder: To report fire alarms and/or evacuation conditions in a zone. The units will require no external power supply.
All I/O modules with have a fast response time of less than 2 seconds for reporting inputs and switching outputs to and from the loop.
5.3
Device Identification The panel will automatically identify every device on the address line during initial start-up, and record this information in memory. Thereafter the panel will check the device types on every scan, and indicate a "wrong device" fault should a device be changed to a different type.
5.4
Device Status The control panel will poll all devices attached to the system within 2 (two) seconds. The analogue value will be read and stored in memory on every scan. The status of a device, once polled, will be assessed by the control panel. The panel will indicate the following conditions: •
Alarm
•
Pre-alarm
•
Fault -
•
5.5
Communication indicated by “Device does not answer” on LCD Wrong device type indicated by “ Type changed” on LCD
Normal
Alarm Threshold The alarm threshold level of each analogue device will be individually adjustable from the control panel. All levels will be freely definable, each having an adjustable pre- and fire alarm threshold. ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 6
5.6
Alarm Verification The control panel will employ methods to eliminate false alarms from occurring. Fire alarm response times will be within the parameters of EN54 Part 2. Under all conditions, reaction times from any device will be less than 2 seconds.
5.7
Line Monitoring The control panel will monitor the loops for short-circuit, open circuit and physical removal of devices from the system. Faults of this nature will be indicated visibly and audibly within the time period specified in EN54 Part 2.
5.8
Memory Allocation The control panel will allow for the allocation of enough system memory to suit all applications. No memory expansion modules will be necessary
6 SIGNALLING AND ANNUNCIATION Fire alarms and fault warnings will be indicated visibly and audibly on the control unit. All visible indicators will be LED's. The following colours will be used for visible indicators: •
Red for indications of -
•
Yellow for indications of -
•
Fire alarms The transmission of signals to fire alarm routing equipment The transmission of signals to controls for automatic fire protection equipment
Fault warnings Disable conditions Zones in the test state The transmission of signals to fault warning routing equipment
Green for the indication of -
Correct operation of power supply and microprocessor
Audibly fire and fault signals will be differentiated as follows: •
Fire -
•
Fault -
6.1
Continuous tone
Intermittent tone
Panel Indicators All panel indicators will be as specified in EN54 Part 2. ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 7
The control panel will have, as minimum the following LED's: General Indicators In service General/Common fire General/Common fault General/Common disable General/Common test Out-of-service fault Supply fault System fault Earth fault Control Indicators Silence Buzzer Evacuation Sounder Indicators Sounders ON Sounders silenced Delay ON Fault/Disable Relay Indicators Disable The panel will as a minimum have 20 zones alarm and fault/disable/test indication.
6.2
Panel Display The control panel will contain a 4 x 40 character backlit alphanumeric LCD display. Up to 20 characters of text will be provided for every field device. Up to 20 characters will be provided for zones, site and installer information.
6.3
Panel Controls The control panel will have the following control keys as minimum: •
Alpha/numeric keypad with scroll and arrow keys
•
Silence buzzer
•
Reset
Sounder • Sound alarms •
Silence alarms
Evacuation • Evacuate
6.4
General Outputs The control panel will provide, as a minimum, the following general outputs: •
Common fire relay
•
Common fault relay
•
Two supervised alarm bell relays ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 8
All relay ratings will be 1A @ 30 VDC
6.5
Programmable Outputs A minimum of 2 programmable output relays will be provided internally to the panel. These outputs may be programmed as zone fire outputs or normal freely programmable outputs. Programmable outputs will also be able to be added at any point in the loop taking up one address.
6.6
Data Outputs The control panel will provide the following data outputs:
6.7
•
One RS232 port that can be assigned to configuration, graphics, external printer or modem
•
One optional RS485 port available for networking of up to 10 control panels
Programmable Inputs It will be possible to program inputs and outputs from any of the following sources: •
Panel Inputs
•
Panel Relays
•
Field I/O devices
•
Inter-panel I/O by means of networking
Programming facilities will include the use of Boolean algebra. Draft Note: Could not find Boolean functions in the panel programming features.
6.8
Panel Printers It will be possible to connect an external printer to the panel by means of the RS232 port. This printer will be assigned as being either an event or report printer.
6.9
Networking The networking capabilities of the system will be such that up to 10 control panels may be connected via RS485 medium. The system will ensure rugged, reliable and peerless operation in that no master panel will be required for the system to operate. It will be possible to remove and add to the network to allow for easy expansion of the system. The network will use an industry standard protocol to ensure that no data is corrupted. The network will be able to provide: •
Inter-panel Input / Output Programming
•
Remote Maintenance Features
•
RS232 Nodes for connection to Graphics Packages, Building Management Systems and modems
•
Global Repeater Panel
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 9
7 PERIPHERAL PANELS A full range of compatible repeater panels and devices will be available for connection to the main system.
7.1
Repeater Panels The Repeater/emulator panel will look identical in appearance to the control panel and display all data as well as provide control of all the control panels on the network at a central point. This repeater will connect directly to the RS485 network.
7.2
Graphics Terminals The system will be capable of operating with a colour graphic package supplied by GE Interlogix residing on personal computers. The personal computer will connect directly to the control panel via a RS232 port.
8 PROGRAMMING Programming will be possible from the keypad at the front of the panel or by downloading data from a PC. All programming will be menu-driven and protected by access codes. The keypad programming will allow for all the possible functions available in the panel. This will include: •
Programming relays
•
Programming detectors
•
Programming inputs/outputs
•
Programming Boolean functions.
•
Setting up device text, zone text and system text
•
Setting up communication parameters on all data ports
It will be possible to programme all the above from a PC by downloading the information to the panel. This will allow the installer/user to have a copy of the complete system's programme in electronic format. One way of programming will not exclude the other. It will be possible at all times to upload the stored programme to a PC in order to maintain updates.
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 10
9 MAINTENANCE FUNCTIONS The control panel will provide extensive facilities to help with the general use and maintenance of the system. As a minimum the following maintenance facilities will be available:
9.1
Automatic Monitoring Every addressable device will be continuously monitored by the control panel for the following: •
Removal of device
•
Quiescent value
•
Circuit failure
•
Device type
•
Or any change of state
Should any of the above parameters be out of specification the panel will give a fault indication visually and audibly. A description of the nature of the fault as well as the location of the faulty device will be displayed. The control panel will also monitor all loops for earth faults that will be reported as described above.
9.2
Visual Monitors It will be possible to visually monitor, on a real time basis, the status of each device connected to the system. It will be possible to see the real time value of any detectors in a specific zone. Temperature monitors will indicate their values in degrees Celsius. All the information will be available at the serial ports.
9.3
Archive Facility The control panel will have an archive facility capable of storing the last 999 events. The events will be stored on a first in, first out basis. It will be possible to print these events.
9.4
Zone Test Mode The control panel will be able to enter a test mode that will allow a one person walk test for multiple zones simultaneously. When in this mode, the control panel will not operate any relays or alarms based on the data received from the zones in test. It will be possible to link sounders to the zone test function if required. On activation of the zone in test, these sounders will be activated for a few seconds and then automatically silenced. Should an alarm occur in any zone other than those being tested, the panel will respond to the alarm in the normal manner.
9.5
Debug Mode Should problems be experienced with a particular sensor, it will be possible place the panel in debug mode. All data received from any sensor will be stored in the event log for retrieval at a later stage, even data and events that do not normally cause an alarm on the panel. In this mode the panel will operate normally for all alarms.
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 11
9.6
Remote Maintenance Remote maintenance of the system will be able to be performed via modem connection to the network. All control panels on the network will be able to be accessed remotely via the modem. Entry into the system will be password protected. It will be possible, once connected to the site, to: 1. Emulate any panel as if the operator were standing at the panel 2. Upload/download the site configuration The system will also operate in ‘central station’ mode whereby the panels may dial to a central station for fires, faults and conditions. The telephone numbers for the central stations will be configured in the panel. It will be possible to dial different stations for fires and faults.
10 DETECTORS AND LOOP DEVICES All automatic detectors will be formally approved by at least 2 (two) internationally recognised testing laboratory listed below:
10.1
•
Underwriters Laboratories, USA (U.L.)
•
Verband der Schaden Versicherer, Germany (VdS)
•
Loss Prevention Certificate Board, Great Britain (LPC)
•
BOSEC, Belgium
•
AENOR, Spain
General Specification The detectors will be suitable for connecting to a two-wire central system and operate satisfactorily within the supply voltage range of 22 - 38 VDC. The sensors will be polarity sensitive. The quiescent current will not exceed 350 µA. Red indicator LEDs (two off) will be provided on the detector. These LEDs will illuminates when the detector has reached a pre-set alarm level. The indicator will be operated independently of the detector from the central control panel. Provision will be made for an output from the detector suitable for operating a remote indicator or other device with a current limitation of 4 mA. Common mounting bases will enable ready removal of the detectors for maintenance. All detectors will use the same base. The bases will be fitted with stainless steel terminal springs and stainless steel terminal screws and saddles. This is not the case at present. Data transmissions between the control panel and the detector will be via a communications module that is factory fitted to the detector by the original detector manufacturer and forms a complete and integral part of the detector. The detector will be supplied complete and fully tested and calibrated. The unique address of the detector will be set by the installer by means of a sensor programmer. The address of the device will be written into non-volatile memory inside the detector head. For easy change of addresses, it will be possible to program a detector address from the panel. No external switches will be available for device addressing. All sensors will be using state-of-the-art technology such as ASIC and SMT. ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 12
10.2
Ionisation Smoke Detectors This device will use imbalance in an ionisation smoke sensor during the presence of smoke to detect a danger condition. It will incorporate a microprocessor for measurement and communication, and will comply with EN 54-7 standard. The detector will be capable of operating within the following environmental limits. Temperature operating range -10° to +60° C Humidity operating range 0% to 95% RH (no condensation) Have at least IP20 ingress protection This device will detect fires at a point where it may still be without flames still without flames, detecting small-particle smoke, visible or not. The device will, as a standard, have the facility to connect a remote indicator.
10.3
Photoelectric Smoke Detectors The photoelectric (optical) smoke detectors will be suitable for detecting visible smoke such as is produced by slow smouldering fires including burning PVC. They will be of the light scattering type using a pulsed internal LED light source and a photocell sensor. The detector will be capable of operating within the following environmental limits. Temperature operating range -10° to +60° C Humidity operating range 0% to 95% RH (no condensation) Wind - not affected Have at least IP20 ingress protection The construction of the detector and base will be in off-white self-extinguishing ABS plastic. Full circuitry will be protected against moisture and fungus. Smoke entry points will be protected against dust and insect ingress by corrosion resistant gauze. The detectors will be unobtrusive when installed, having a dimension not exceeding 51 x 99 mm diameter maximum, including the mounting base. The detector will be capable of protecting an area up to 100 m² at a height of up to 12 meters. The installation and positioning of the detectors will conform to the applicable national standards. It will be possible to service a contaminated sensor in the field. The sensor will be equipped with a field exchangeable and disposable optical chamber. The device will, as a standard, have the facility to connect a remote indicator.
10.4
Heat Detectors The device will monitor ambient temperature by means of an exposed transistor. The detector will be capable of operating within the following environmental limits: Temperature operating range -10° to +70°C (no icing) Humidity operating range 0% to 95% RH Wind - not affected Have at least IP20 ingress protection. ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 13
The construction of the detector and bases will be in off-white self-extinguishing ABS plastic. Full circuitry will be protected against moisture and fungus. The detectors will be unobtrusive when installed, having a dimension not exceeding 51 x 99 mm diameter maximum, including the mounting base. Each detector will be suitable for protecting an area up to 50 m² at a height of up to 7.5 m. The installation and positioning of the detectors will be carried out in accordance with the applicable national standards. The device will, as a standard, have the facility to connect a remote indicator.
10.5
Dual Photo-Electric/Heat Detectors The device will continuously monitor the environment where they are placed and report any changes in smoke concentration AND/OR heat to the control panel. The device will be designed according to EN54-7 and EN-54-5 standards. Temperature operating range -10° to +70°C (no icing) Humidity operating range 0% to 95% RH Wind - not affected Have at least IP42 ingress protection. The device will be a photoelectric and heat smart dual-sensor that will combine in an intelligent way one photoelectric and two heat sensors to detect a very wide range of different fires. The heat detection will be based on a rate-of–rise response that will be capable of detecting fires generating very low quantities of smoke based. In these cases the alarm will be based on temperature analysis only. Under other operating conditions it will be possible to raise the alarm using only photoelectric principles. The device will, as a standard, have the facility to connect a remote indicator.
10.6
Manual Call Point The call point will be manufactured from self-extinguishing red polycarbonate plastic. The overall size of the call point will not exceed 87 x 87 x 52 mm. The call point will be based upon a standard product manufactured by a reputable call point manufacturer. The manual call point will then be modified by the manufacturer of the heat and smoke detectors to incorporate a communications module within the call point. No external alterations to the call point will be made other than the fixing of a flush mounted LED to be located to the left. The LED will be red in colour. The LED will illuminate when the call point is activated. However, the illumination of the LED will be by command from the control panel.
10.7
Optical Beam Smoke Detector System An optical beam smoke detector system will consist of a transmitter unit, a receiver unit and a control unit. Each transmitter unit will project a modulated infrared beam on to a receiver unit. Each receiver unit will analyze the signal, and if smoke is detected an alarm signal will be transmitted to the control unit. The control unit will link all sets of beams together for single point control of the entire system. The detector unit will provide a fire alarm signal in the form of a set of N/O volt free relay contacts that close under alarm conditions and reset when alarm condition ceases to exist. The unit will be capable of operating on a 24 VDC supply system even when supply voltage drops to a value as low as 17 VDC. The beam will be effective over a range of from 9m to 100m and lateral detection will be effective up to 7.6m either side of the centre line of the actual beam. The unit will be provided with a self-check function and automatic compensation for dust accumulation, component ageing and temperature changes.
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 14
10.8
Flame Detectors
10.8.1 Infra-red flame detector The flame detector will be of the dual infrared type, solar blind. Both alarm and fault relays will be incorporated with the option for use on 4-20 mA systems. The spectral response will be between 1.00 and 2.8 µm. The detector will be suitable for 2 or 4 wire operation. The detector will be capable of detecting hydrogen flame.
10.8.2 UV Flame detector The UV flame detector will have a spectral response of 185 to 260 nm. Both alarm and fault relays will be incorporated. The facility will exist to switch out the fault relay for 2-wire operation. The detector will be of the non-flameproof type. The minimum field of view will not be less that 100o. The detector will be capable of operating from 12 or 24 VDC.
10.9
Sounder Control Unit The sounder controller(s) will locally drive and monitor sounders hooked up to the same 2-wire loops that hold the detectors. The unit will have its local power supply and will monitor the sounder loop for short and open circuit, as well as its 24 VDC supply. The sounder controller will operate through polarity reversal. It will be possible to operate the sounder controller continuously for a fire. This operation will be freely programmable.
10.10 Zone Monitor Unit The zone monitor unit will monitor one (or up to four) conventional non-addressable detector or manual call point zones. Each zone will have the capacity for up to 20 conventional detectors, or up to 30 conventional manual call points. This unit will be connected to the same 2-wire loop as the detectors. This device will supply power the conventional 2-wire loop from an external supply and supervise the zone with an end-of-line resistor. The device will report fire alarms and faults to the panel under a single address common for all the conventional detectors. This will apply per zone. The alarm LED on the conventional devices will light up in alarm condition.
10.11 I/O Units The I/O units will be connected to the same bus as the sensors. An end-of-line resistor will monitor supervised inputs. The module will allow for NO or NC contacts. All outputs will use changeover relays. The relays will be of the magnetic latch type to limit current consumption on the loop. The I/O addresses will set with a DIL switch utilizing simple binary addressing. A status LED on-board will indicate the status of the in or output. ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 15
The range will at least allow for following modules: 4O, 1I/1O, 1O, 1I and a gas control unit. Any I/O module will allow for individual input and output operation and recognition.
10.12 Extinguishing Units The Extinguishing Units will be connected to the same bus as the sensors and other I/O modules. It will be a specialised I/O unit that will allow for the control and monitoring of all inputs and control of all outputs related to the extinguishing area. End-of-line resistors will monitor all inputs and outputs related to the extinguishing area. As a minimum requirement, the extinguishing module will allow for Inputs: • Stop activation of extinguishing agent •
Manual activation of extinguishing agent
•
Monitor of the level of the extinguishing agent
Outputs: • Activation of the extinguishing agent •
Activation for the warning indicator for the extinguishing area
•
Pre-alarm output indicating that the extinguishing system has been triggered
The I/O addresses on the modules will be set with a DIL switch utilizing simple binary addressing.
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 16
11 SOFTWARE CONTROL In order to ensure the reliability of the system, the following requirements for software design will apply:
11.1
•
The software will have a modular structure
•
Measures will be included in the program to prevent the occurrence of a deadlock in the system
•
The execution of the program will be monitored
Operating Programes All executable code and data will be held in memory that is capable of continuous, reliable, maintenance free operation, for a period of at least 10 years. The program will be held in non-volatile memory that can only be written to at access level 4.
11.2
Configuration Data The site-specific data will be protected against power loss. The programming will be stored in E²PROM and will not require battery backup.
12 POWER SUPPLY AND CHARGER UNIT The power supply and charger unit will form an integral part of the control unit and will operate from mains power of 230V ± 10%. Each power supply and charger unit will contain over-voltage protection to prevent any malfunction or damage due to power line surges. In the event of a failure of the normal mains supply to the central panel there will be an automatic switchover to the standby battery supply without disturbing the sound operation of the fire detection system. The control panel will be able to house the standby battery of nominally 24 VDC rated to maintain operation for a minimum of 24 hours of which at least 1 hour is at alarm status. The standby battery will be automatically be maintained in a charged condition by the charger unit. When the AC power is restored the power supply will automatically revert to mains power, and the system will remain fully operational. The power supply and charger unit, including all fuses, will be entirely supervised. Any malfunction or blown fuse will result in a fault indication on the control panel.
ARCHITECTS SPECIFICATION FOR AN ANALOGUE ADDRESSABLE FIRE DETECTION SYSTEM Revision 0: July 2003 Page 17
