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F120A Fire Alarm Panel

General Information Messages

This table provides descriptions for general information messages.
These messages are informative only and are shown in the current event queue along with defect events.

Message Description

Walk Test ON
AUX Isolate ON
Door Holder Isolate ON

The specified button has been pressed. All of these conditions are common across all LCD mimics; pressing the button on any mimic will toggle the state, even if activated from another LCD display.

LED Mimic/Amp n Door
LCD Mimic n Door

The door is open on the specified mimic panel. This will generate a Door Interlock Defect if the main panel door is closed.

Input Active

A loop device configured as input-only (no Bell or Brigade flags set) has activated.

Defects Messages

This table provides descriptions for system defect messages.
These are defects detected on the F120 panel, other than those generated by loop devices.

Message Description
Loop nn open An open-circuit condition exists on the specified loop. Note that this may in fact be due to a line short between loop isolator devices which have activated to cause the loop to open.
Loop nn short A short-circuit condition exists on the specified loop. This will be generated where the short occurs between the loop driver and the first isolator device on the loop.
Loops x+y FAILED!(Timeout) The specified loops are offline, as the loop driver controlling them has failed to respond to commands sent by the Mainboard.
Bell 1 Defect
Bell 2 Defect
The specified Bell relay circuit is open or short-circuit.
AUX Monitor Defect The AUXM relay is open or short-circuited.
Earth Leakage Fault (msg) The Earth monitor circuit has detected a connection to Mains Earth
The value of msg is one of high, low or high +low
Program ROM CRC Check Failed An error in the Program ROM area has been detected. This may indicate that panel operation will be unreliable.
Config ROM CRC Check Failed
An error in the Configuration ROM has been detected. The second line indicates the affected area. This may indicate that panel operation will be unreliable, but limited to the affected data only.
Memory Lock Switch Defect The Configuration Memory Lock switch is OFF, outside the Engineers Menu.
AUX Defect Active The AUX Defect input on the F220 Mainboard is open.
Door Interlock Defect The F220 Mainboard door has been closed with certain panel functions active
LED Mimic/Amp n Timeout
LCD Mimic n Timeout
The LCD/LED mimic (or amplifier) has not responded to commands sent by the F220 Mainboard.
LED Mimic/Amp n Extra
LCD Mimic n Extra
There are more devices detected on the RS-485 mimic bus than are programmed into the configuration.
LED Mimic/Amp n Disp Fault There is a defect in the LED mimic display board hardware.
LED Mimic/Amp n Interlock
LCD Mimic n Interlock
The interlock circuitry on the relevant mimic is off-normal.
LED Mimic/Amp n Ext Defect The External Defect input on the mimic is active
LED Mimic/Amp n Fault Some defect condition, other than the above, has occurred on the mimic.
Main LCD Timeout The primary LCD display board is not responding.
Registration Data Fault
The onboard ID chip is not functioning or has not been correctly initialised at the factory.
Network MissingThe Networking option has been enabled, but the network interface card is not responding.
Network Lost [IN]
Network Lost [OUT]
The network card has lost communication with its neighbours in the indicated direction.
Network Duplicate Addr
The attached network card shares the same network address as another card on the system
Network Earth Defect
The network card has detected an earth fault condition.
Network Config Error
The network card has a configuration mismatch of some kind.
Network Panel Type Error
The network card is expecting a different (not F120A) panel type to be connected.
Network Error
A fault has been detected elsewhere on the network
FanCtrl xxx DEFECT - StartFail A Fan Control Block has not detected its associated fan running (Status) signal in time after triggering its Start output.
FanCtrl xxx DEFECT - StopFail A Fan Control Blocks associated fan running (Status) signal has remained active for too long after triggering its Stop output.
RS-485  FAILURE !!
Shown on various LCD displays or LCD mimics when there is lost communications from the F220 Mainboard. These messages are generated on-board by the display hardware, as they are not receiving data from the panel.

Loop Messages

This table provides descriptions for loop device event/messages.

Message Description
**ALARM** Applies to a loop input device – detector, Manual Call-Point, or input module; when the device activates. The alarm may be one of the following:
Smoke either an intelligent smoke detector or a conventional smoke detector activation from a Loop Responder input.
Call-Point either an MCP-type device or a Manual Call-Point activation from a Loop Responder circuit.
Heat thermal detector.
Defect Generally, Defects can be decoded to one of the causes listed below, however for some events this is not possible.
Pre-Alarm Applies to detectors only. The analogue value being returned is approaching the Alarm level.
Double Device Two loop devices on the same loop have been assigned the same address.
Missing A loop device that has been configured in the system memory is not present on the loop.
Extra Device The loop driver board has detected a device that doesn’t exist in the panel configuration.
Maintenance Alarm The loop driver internal drift compensation has reached its threshold limit - the detector requires cleaning.
Type Mismatch A loop device does not match with the configuration assigned to it in the system memory.
Self-Test Fail A loop device has failed its regular auto test.
ISOLATE A loop device has been isolated through the ISOLATES push-button on the front panel display or the User Menu.
Alarm Reset A loop device that was in 'Alarm' has been 'Reset' through the RESET push-button on the front panel display.
Low Defect Generated by sensing chamber defects in System Sensor detectors
High Defect Generated by sensing chamber defects in System Sensor detectors - this can mean that the chamber is too dirty for the detectors internal drift compensation algorithm to operate.
Short Circuit A monitored relay has a short-circuit.
Open Circuit Generated by open-circuits on either monitored loop relays or modules.
Board Reset A Pertronic Loop Responder has restarted.
Supply Defect There is either a 'Defect' in the detector supply on a Loop Responder, or the external power supply on a Pertronic Loop Relay board is out of range.
Isolator Active The on-board isolator relay on a Pertronic Loop Responder or Relay has activated due to a short-circuit on the loop.
AVF Stage 1 A loop device with AVF enabled has been triggered once and is in the AVF delay period awaiting a second trigger.
Input Active A loop device programmed with no output flags (i.e. one not generating an Alarm event) has activated.
Fan Relay Latched A Pertronic Fan Relay unit has been latched active by its associated Fan Controller unit.
Circuit Resetting A Pertronic Loop Responder circuit is in its self-timed reset phase after receiving a reset command from the panel.
Comms Error  Indicates that there is a loop device present at the location, but the data has been corrupted and cannot be interpreted.
Manual OFF  A SW3 device has been switched off.
Manual ON  A SW3 device has been switched on.

System Events

This table provides descriptions for system event messages.

Type Description
Fire Global Fire condition set.
Defect Global Fault condition set.
Pre-Alarm At least one detector is in pre-alarm state.
Common Isolate At least one device or zone is disabled.
Sprinkler SPR input on F220 Mainboard.
Evacuate Evacuate active.
Silence Alarms SILIENCE ALARMS set via pushbutton, keyswitch or network.
Low Battery Low voltage on battery or battery missing.
Mains Failure Mains supply absent. Note that this is the actual state of the mains supply -it does not cause a Defect condition mmediately.
Lamp Test Activated when the F220 is in Global Lamp Test mode. Provided for lamp test of external equipment.
Local lamp test will not trigger this event.
Note: LED outputs are overridden by Lamp Test and will therefore not operate, although they will be treated normally if used as a logical input.
Device Reset Active for 40 seconds after system reset or power-up, or 5 seconds after a device (ZMU or BMIF types only) is reset via the 'System Panel' Intended for use with devices, which require a power-down to unlatch an 'Alarm' condition.
Alarm Acknowledge Active for 5 seconds after any 'Alarm' condition is acknowledged
External DefectActive when the EXT DEF input on the main PCB is open-circuit.
Door Open Active when any LCD Mimic or the main panel door is open.
Buzzer On Active when the F220 buzzer is activated.
MCP Alarm Active when any MCP device is in 'Alarm'.
Smoke Alarm Active when any smoke detector is in 'Alarm'.
Thermal Alarm Active when any heat detector is in 'Alarm'.
FanCtrl Latched Active when any latched Fan Control Block, or Relay, with the ZoneTrip flag set, is active and therefore must be reset via the global FanReset output.
FanCtrl Reset Active for at least 5 seconds (or when all FCB's have been processed) after the global FanReset output is activated.
FanCtrl Frozen Active once the FCB Freeze Time period has expired
AUX Isolate AUX ISOLATE control is active.
DHR Isolate DOOR HOLDER ISOLATE control is active.
Night Mode Active when panel is in Night mode
Silence Alarms: Key-Switch Active when a BCO key-switch input is active.
Silence Alarms
Active when a pushbutton Silence Alarms input is active.
Global NBR Reset Set for 5 seconds after the global Non-Brigade Reset function has been activated.
Brigade Active whenever the Mainboard Brigade Fire relay is active.

Power Supply Defect Indication Table

Possible causes of F120 power supply defects are

Defect LCD Message Comments
Battery Missing Battery Disconnected Below 23.5V (checked every 10 seconds) when Mains supply is good
Battery Low Battery Low Below 24.36V when Mains is OFF or the charger is in Test mode. 
Battery Failed Battery Failed Below 19.2V
Supply Low Voltage Power Supply Low Fault Below 25.9V when Mains supply is good
Supply High Voltage Power Supply High Fault Above 28.8V
Mains Loss Mains Lost Door Interlock

Mains fail (after 60min)
Occurs immediately when the door is closed with the Mains disconnected.
Occurs 1 hour after the Mains is lost, if the door is closed.

Detector Sensitivity Table

Provides a guide to the detector sensitivity configured and the actual level required to generate an alarm.

Detector Sensitivity Table


  1. The actual sensitivity of the Acclimate detector at levels 0 and -2 is determined by the internal algorithms of the detector itself. In “noisy” environments the actual sensitivity decreases towards the lower sensitivity in the range (higher %/m value), and in “quiet” environments the higher sensitivity (lower %/m) is used.
  2. For the intelligent detectors (Acclimate, Pinnacle & FAAST), the detector outputs a set of fixed, discrete levels for each sensitivity setting. Pre-alarm condition is determined by looking for an active level at the next-highest setting There is no Pre-Alarm warning available on the highest sensitivity level, therefore it is recommended that detectors are not ‘Brigade Calling’ at the highest sensitivity level.
  3. At the lowest sensitivity (-4), the Acclimate, COPTIR and PTIR are Heat only detectors.
  4. See FAAST sensitivity table below

COPTIR/PTIR Sensitivity Table

The table below summarises the principal properties of the COPTIR and PTIR at the 6 available sensitivity settings.

COPTIR/PTIR Sensitivity Table

FAAST Sensitivities Table

The FAAST has 5 named alarm threshold values that are locally assigned to the device via the PipeIQ configuration software as follows:

FAAST Sensitivities Table

Cabinet Dimensions

Description Height mm Width mm Depth mm
Tall Panel 900 450 130
Double Cabinet 900 800 130
28U Rack Cabinet 1330 575 385
40U Rack Cabinet 1865 575 385

RS485 Bus

Up to 32 devices may be connected to the F120A through the External RS485 connector (K24). RS485 devices may be any of LCD and/or LED devices.

  • Up to 32 devices may be connected to the F120A through the External RS485 connector (K24). RS485 devices may be any of LCD and/or LED devices.
  • LED devices may be LED Index Panels, 50W Amplifiers or any of the LED-Addressable interface units.

Each RS485 device may be configured as a ‘Slave’, ‘Polled Slave’ or ‘Master’ mimic.

  • Master mimics each have a different address (1 to 8), and must be sequentially numbered beginning at
    address 1. The number of Master mimics (either LED or LCD) is selected from the Engineer’s Menu as
    described in Section 9.5: Mimics - Configure LED and LCD Mimics. Full-Function master LCD Mimics
    have full keyboard control of the F120A.
  • Polled slaves are detected by the F120A, but the panel only verifies that the mimic has replied; no
    mimic events are processed. This setting is useful where there are many mimics wired in a “star”
    configuration so that the panel can verify the integrity of the cable out to the “point” of the star. Only LCD Mimic addresses 9 to 29 are treated as polled slaves
  • Slave mimics are receive-only and simply act as remote displays. Slave mimics cannot generate events
    on the F120A, as the panel is unaware of their existence.

The F120A checks the number of Master and Polled Slave mimic panels connected and transmits a ‘Defect’ if either too many or too few are found. The addresses for mimics greater than the number specified in the configuration are checked each time the door is closed or when the mimic counts are adjusted.

Full-Function Master mimics can initiate the Silence Alarms or Trial Evac functions available at the Main panel, as well as all other panel functions available on the local LCD display.

Two LEDs, Tx and Rx (at the top-left of the Master PCB) flash when data is transmitted to, or received from the mimics.

The mimics may be located up to 1km away from the F120A. Twisted pair wiring is recommended for the data lines.
The following devices may be connected to the RS485 bus:

RS-485 Device Master Polled Slave Slave
LED Mimic: 12-Way Smart LED board Yes (1 – 8) No No
EVAC50W24V Amplifier (set as LED–1-8 Amplifiers) Yes (1 – 8) No No
EA60/EA120 Amplifier (set as LED 1-8 Amplifiers) Yes (1 – 8) No No
EVAC50W24V Amplifier (set as LCD–9-16 Amplifiers) Yes (1 – 8) No No
EA60/EA120 Amplifier (set as LCD 1-8 Amplifiers) Yes (1 – 8) No No
LED Address Controller: Yes (1 – 8) No No
RS-485 Ancillary Peripherals: connect to 12-Way Smart LED board or LED Address Controller
8-Way LED Extender board (F100PDB)
8-Way LED Relay board (F100ZDRLY)
LED Zone Address Offset board (LAC12W)
48-Way Open-Collector board (48WOC-IF)
24-Way Open-Collector board (24WOC-IF)