Fire-Lite ACM-32AF Annunciator Modules - Manual (Page 26)

4. Installation Wiring and Connecting
26
ACM-16ATF/ACM-32AF Manual PN 51480:A0 02/02/01
24 VDC Circuit
CAUTION: Power must be turned off when connecting the 24 VDC
power to the annunciator to avoid damaging the equipment.
Connect the 24 VDC annunciator wiring to the removable terminal blocks
as illustrated below:
• Power must be filtered, non-resettable, and power-limited.
• A Power Supervision Relay is not needed because the annunciator is
inherently supervised by the control panel (loss of EIA-485
communication is registered at the control panel during loss of power
to the annunciator).
• The power can be supplied by the FACP or a remote power supply listed
for fire protective signaling use.
• Connect Earth Ground to a mounting screw on the backbox or cabinet.
Figure 6 Connecting 24 VDC Wiring to Terminal Blocks
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N/C Trouble Input
N/C Trouble Input
Common In
Common Out
Power In
Power Out
Earth Ground
TB1 on Last Annunciator
ACS_
p
w
r.
c
d
r
24 VDC
Power
TB1
TB1
N/C Trouble Input
N/C Trouble Input
Common In
Common Out
Power In
Power Out
Earth Ground
N/C Trouble Input
N/C Trouble Input
Common In
Common Out
Power In
Power Out
Earth Ground