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INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
21 ASSIGNING A REMOTE PUSHBUTTON INPUT TO SLEEP MODE
Whilst in sleep mode the audible alarms are disabled and the individual channel LED’s are disabled
to save power and prevent noise pollution during unmanned periods.
When the switch is maintained in the closed position the Annunciator will remain in sleep mode
until the switch is returned to normal.
Please note:-
• The individual channel repeat relays will continue to operate as usual during sleep mode to
allow notication of alarms to 3rd Party devices
• The two group relays GPA, GPB & the Watchdog relay can be prevented from operating in
sleep mode under the Common Services Relays – Tab if required.
In the above example Remote Pushbutton 5 has been set as an input for the external “Attended /
Unattended” sleep mode switch.
21.1 Common Relay Operating In Sleep Mode
Each of the common relays can be prevented from operating in “Sleep” mode if required.
For example during unmanned periods the two horn relays can be prevented from operating to
prevent noise pollution whilst the 2 Group and 1 Watchdog relay can continue to operate as normal.
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