Series 90B ANNUNCIATOR INSTALLATION AND CONFIGURATION MANUAL
CSM (Common Service Module)
The functions of the CSM are defined in this page.
Common Relay
There are 2 relays in the CSM and an additional 2 can be provided with option
RLY. Each relay mode may be defined as either Energized or De-Energized, with
respect to the power on, normal state. For example, an Energized Relay has a
coil that is energized when power is applied and there is no alarm. When the
output is activated, the coil will de-energize, transferring the contact output. The
Standard relay functions may be selected from:-
Critical horn Auxiliary horn output driven by any alarm selected as critical. The
horn relay output will return to its normal state upon activation of the silence or
acknowledge pushbutton.
Non-critical horn Auxiliary horn output driven by any alarm selected as non-
critical. The horn relay output will return to its normal state upon activation of the
silence or acknowledge pushbutton. Note: If a critical horn is used in addition to
the non-critical horn, the critical horn has priority. For example; if the non-critical
alarm is on and the Annunciator receives a critical alarm, the non-critical horn will
turn off and the critical horn will turn on. When the critical horn is silenced, any
new non-critical alarms will activate the non-critical horn. This operation can be
changed in the common functions below.
Ringback (clear horn) An output driven by the return to normal of an alarm
input. Operated by sequences R, RC, R12 and R12C only.
The following functions are included with the RLY Relay Option:
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