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The four standard monitored sounder outputs are activated together with two sets of change-over
volt-free auxiliary contacts. The internal buzzer is also activated, (constant mode). The alarm
and auxiliary repeat outputs are also energised.
When fitted the printer will produce a hard copy of the time of activation and the full device
information, i.e. loop, zone, device, type and text message. This will happen irrespective of
printer state, i.e whether enabled or disabled.
Operation of the SILENCE ALARMS push-button de-activates the sounder outputs and causes
the FIRE and zone LEDs to go steady. The internal buzzer remains active but changes to a
pulsed mode. The LCD/VFD will also change to indicate precise device information as detailed
below.
A further device fire initiation will re-activate the sounders, flash the FIRE LEDS and also flash
the new zone LED. The original zone LED will remain steady.
To return the panel to normal condition the SYSTEM RESET push-button must be activated.
This can only be done after the SILENCE ALARMS push-button has been operated.
2.3
SYSTEM INDICATIONS
Apart from continually monitoring the loop devices for the above conditions the panel also
monitors other aspects such as the external wiring, both loop and sounder circuits. The various
functions are detailed in the following sections.
2.3.1 External Fault
The EXTERNAL FAULT and SYSTEM FAULT LEDs are illuminated under three conditions:
1.
A failure of the external wiring of either of the two monitored sounder outputs. The
monitoring circuit will detect either open of short circuit condition. Each output is
separately fused and will also cause an external fault. An internal LED confirms a
sounder output fault.
2.
Menu two option 6 is provided which isolates the auxiliary outputs, i.e. when operated,
a fire alarm condition will not activate the auxiliary output contacts. To prevent this
action being left in the isolate condition an 'external fault' is generated.
3.
A communication fault occurs between the main and slave processor units.
An external fault also activates the internal buzzer and the LCD/VFD display confirms the
condition as detailed above. The buzzer can be silenced by operation of the SILENCE
ALARMS push-button.
TM0064
Page 33 of 91
Issue 2.01
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