Class Change
A pair of contacts are provided for a class change facility. By short circuiting these contacts via a
switch, pulse unit, time clock or by other means, the alarms will sound without illuminating the fire
lights. The alarms will cancel when the short circuit is removed. No voltage should be applied to
these terminals.
Auxiliary Common Output
This is a 'solid state' semiconductor switch which operates on the activation of a fire on any latching
zone by 'pulling down' this output to 'zero volts' (Note, the activation does not occur for fires on
non-latching zones). This makes the output suitable for driving an external 24V relay with a coil
current of 10mA, maximum, which can be used for operating door release units etc. This output is not
activated by Sound Alarms or Class Change.
Auxiliary Fault Relay
A1 Amp (max), 24 VDC (resistive) voltage free single pole changeover relay is provided. The relay
will operate on the activation of any fault registered by the panel. 240V MUST NOT BE SWITCHED
WITH THIS RELAY.
Remote Signal Relay
A1 Amp (max), 24VDC (resistive) voltage free single pole changeover relay is provided, operating
on the activation of any zone, after any delays are taken into account on that zone. The relay is for
signalling to a remote location, of for operation of an autodialler. Where it is required to signal to a
control station an interface unit, supplied by the control station operator, will be required. This relay is
not activated during Sound Alarms, nor during Class Change. 240V MUST NOT BE SWITCHED
WITH THIS RELAY.
An isolate facility is provided to enable the panel to be tested without operating the remote signal
relay. This facility is available in the supervisor mode from the front panel. When pushed the Remote
Signal Isolate LED will light and the internal buzzer will sound every 10 seconds. Note that doing a
system Reset will not cancel the isolate facility.
Repeater Output
A2 wire serial link interface is provided for connecting to a repeater panel. Further details of this
interface are available on request.
Do not exceed the maximum output current rating stated in the Technical Specification
(Appendix D)
PAGE 23
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