Download Fire alarm control panel Manual

BETA-Mk 2
Fire alarm control panel
Manual
1
Introduction
“BETA-Mk 2” Range of fire alarm control panels are designed and manufactured to meet
the requirements of B.S.5839 pt4 (EN54).
Standard control panel is a robust construction using plug-in cards for ease of maintenance
and. There are two types of plug-in cards in the standard system. Card 1699 is an 8 zone
mother board. Card 1700 is an 8 zone detection board. All fitted in a robust metal
enclosure.
Each detection circuit operates on an open circuit principle and is monitored using an end
of line 2k2 resistor or an active end of line unit (To allow removal of a detector without
disconnecting rest of the circuit, See drawing AC395. In this mode detector base will
require to be fitted with a Diode).
Any short or open circuit in the detection line immediately is detected and indicated as
common fault on the front of panel and individually indicate on the top board. Two
common sounders are provided for standard panels. Each sounder circuit is constantly
monitored for short circuit and open circuit using a 2k2 End of line resistor. Each circuit
is also protected by a 0.5A fuse. Any sounder fault will indicate as Common fault on front
of panel and individually indicate on the mother board.
Should an alarm condition be initiated by a detector or a manual call point, Twin red
“FIRE” led’s indicate in that zone. Internal buzzer will sound and two sounder circuits will
activate. Sounder circuits can be silenced or recalled at any time during the period between
fire detection and system reset. Sounders will reactivate automatically if any other zone is
activated. Sounders can be tested by pressing the “TEST / EVACUATE” Button.
D.C. Power supply and battery charger are integral part of the control panel with space for
3.2Ah S.L.A. 24volt Batteries. Standard charger is of constant voltage 27.5V Current
limited at 1A (For standard panels of up to 8 zones). Charger supply and battery supply are
constantly monitored for failure. Failure of mains / charger or batteries will be indicated by
common fault on the front of panel and individually indicate on the mother board.
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Specification
Indicators
Mains healthy:
Battery fault, mains, charger fault
Common fault
Sounder fault:
Detection line fault:
Fire
Engineer’s walk test
Twin green led’s
Led on board
Twin Yellow led’s
Two led’s on board (one for each sounder)
Yellow led’s on board for each zone
Twin red led’s per zone
led on board
Switches
Reset button
Test / Evacuate button
Sounder silence button
Internal buzzer silence button
Zone isolate slide switches per zone (on board)
Engineer’s walk test slide switch (on board)
Repeater outputs
Fire output for every zone (Negative going signal 25mA max.)
Fault output common
(Negative going signal 25mA max.)
Buzzer output (Negative going signal 25mA max.)
Reset switch output
Test / Evacuate switch output
Sounder silence switch output
Buzzer silence switch output
All switches must be normally open and one side going to 0 volt
Aux. 24v output: 200mA max. (Must not be used for permanently activated load).
Aux. Relay volt free contacts: sets of change over contacts (Activate with any fire)
Contacts rated at 1Amp / 30V DC. resistive
(Do not use for mains supply switching)
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Electrical
Mains supply:
220 – 240 V A.C. 50 Hz
Fused at 1Amps
Standby supply:
24v SLA batteries
Float charged by integral supply / charger
0.5Amp current limited at 1A.
Space for 3.2Ah inside the standard panel
For larger supply or / and batteries
External power supply / charger should be
Specified.
Sounder circuits:
Two common sounder circuits are supplied
As standard.
Fused at 0.5A each (Limited to total available power)
Auxiliary relay:
One sets of volt free change over contacts
Rated at 1A / 30VDC(Resistive)
Quiescent current:
50mA basic current plus 5mA per zone
Detector line voltage:
18Volts DC in quiescent state
Construction
Wall mounting case.
Sheet metal construction with hinged lid.
Powder finished appliance white.
Dimensions
Control panel (Surface mount)
355mm W x 255mm H x 85mm D
Control panel (Flush mount)
Front panel: 395mm W x 295mm H
Back box: 350mm W x 250mm H x 80mm D
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Installation Information
1) Simply fix the box to an appropriate location.
2) Knock out relevant 20mm knock outs and wire according to the local fire regulation.
3) Enter appropriate cables ie. Mains supply, Alarm sounders, Detector lines and any other
cables necessary. Then place chassis back in case and locate.
4) Connect cables to terminals using schematic diagram for details. (Any cable insulation
testing should be carried out before cables being connected to control pane
terminals). Do not switch on the power at this point.
5) Remove resistors provided in detection zone terminals and place them at the end of
detection lines (Do not use the resistors if active end of lines are being used, see
drawing AC395) If 2k2 end of lines are being used, do not fit diodes in the detector
bases. If active end of lines are being used, do fit diodes in the detector bases. Remove
resistors provided in alarm sounder terminals and place them at the end of alarm
sounder lines.
6) Test should be carried out if possible using mains powered supply not batteries at this
point.
Batteries should be connected to the system when cable faults are removed. 2x12v
rechargeable sealed lead acid batteries should be used. Please ensure that batteries are
connected in series to provide 24v D.C. and avoid wrong polarity. Connecting the
batteries in wrong polarity will damage the equipment.
7) Maximum alarm load must not exceed 0.5A per circuit (limited to total available
power).
8) Under no circumstances should a “MEGGER” or any insulation tester be used
once cables are connected to control panel and / or detector bases. End of line
units also will be damaged by use of insulation testers.
9) BS 5839: In order to comply with BS 5839 pt1, both alarm circuits and detection lines
muse be wired in an appropriate physically protected cable. All circuits must be wired
in a continuous line without spurs or branches, if monitoring circuits are to be effective.
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Operating Instruction
“BETA – Mk 2“ Range of Fire Alarm Control Units.
Normal
When the unit is healthy only the green “Mains Healthy” lamp will be on.
Line Fault
Yellow “Common Fault” lamp on the panel is on, on board an appropriate yellow fault
lamp is lit. this could mean that a detector has been removed or that the circuit has been
broken or short circuited. It could also mean one or more zones are Isolated. Check that all
detectors are fitted and if fault persists contact your service engineer as soon as possible.
On initiation of a “Detector Line Fault” the internal sounder will sound. The sounder may
be silenced by pressing “Buzzer Silence”. The “Detector Line Fault” lamps will stay on
until the fault is corrected.
Mains Failure
If the electrical supply fails, the green “Mains Healthy” lamps will go out. “supply
fault”led on mother board will come on. common fault led will come on the front panel .
Action should be taken as soon as possible to restore the mains supply. The system will
continue to operate on its own internal batteries for 24 Hrs (If appropriate size batteries are
used).
Battery Supply Failure and Charger Failure
In the event of a failure of either the internal batteries or the associated charger unit, the
“supply fault” led will indicate on board, common fault led will light on the front panel.
internal sounder will start, and may be silenced by pressing “Buzzer Silence”. Your service
engineer should be contacted to rectify the system fault. The system will continue to
operate on mains supply only.
Alarm Circuit Fault
Should the wiring connecting the alarm bells become damaged or broken, the yellow
“common fault” lamps will come on the front panel, and on board sounder fault led will
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light. The internal sounder will start. The internal sounder may be silenced by pressing
“Buzzer Silence”. Your service engineer should be contacted as soon as possible.
Fire
When a break glass unit is operated or an automatic detector detects, two red “Zone Fire”
lamps will come on. Simultaneously the internal sounder will start, the bells will sound and
you should now carry out your normal fire drill.
To Silence The Alarms
Should you wish to silence the alarm bells, press “Silence Sounders” button. The internal
sounder remains “On”. The internal sounder will not silence by pressing the “Buzzer
Silence”.
To Reset The System
Replace any broken glasses in the break glass units around the building and ensure that any
fire condition, smoke for example, has cleared. Press the “Reset” button only. If active end
of line units are used, after reset zone fault LED’S may turn on for a period of up to 2
seconds.
Testing
To test that the alarm bells are working, or to operate them independently of any fire
condition press “Test/Evacuate” button.
Testing the system using engineer’s walk test ( Auto reset).
Switch the slide switch marked “Engineer’s walk test, Auto reset” to ON position.
Cary out test by testing call points, detectors etc. You will hear the sounders activating for
a few seconds and reset automatically.
Return the slide switch back to OFF position when finished.
Isolating Detection Zones
Detection zones can be isolated individually by sliding the isolate switches (isolate
switches are located on the main PCB, directly below the terminal blocks, Isolating a
detection zone is indicated by common fault two yellow fault LED’S and the appropriate
fault led on board and internal buzzer (internal buzzer can be silenced if necessary by
pressing “Buzzer Silence” switch) During this time the isolated zone will not accept any
incoming fire signals. Isolator switch must be put back to normal as soon as possible, and
this is identified by extinguishing of yellow fault LED’S.
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