25
INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
7 COMMON ALARM GROUP RELAYS
7.1 GPA & GPB Group Relays
• Two common alarm group relays are provided as standard GPA & GPB.
• Any channel within the annunciator can be software congured to operate the GPA or GPB
relay as required.
• A volt free contact is available from each relay for use with 3rd party devices.
• The Contact is congurable to N/O of N/C.
• Contact rating 1A 24VDC (0.5A 120VAC)
• A reash function can be used to interrupt the common alarm contacts each time a new
alarm in the group occurs.
• If Group Relays are not required the relays can be software selected to an alternative
function. (Horn Relay, Pushbutton Follower, Watchdog Function)
WARNING !
GPA, GPB, WD, Channel repeat relays should only be connected to
customer secondary circuits separated from mains supply circuits by
means of a transformer.
For hazardous voltage above 60Vdc (SELV) isolate the supply before
carrying out any work
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