Installation—Installing the FC-2000 43
Internal power for the system is provided via the power harness. Connect
this harness from P2 on the MPS-24A to the CPU. If employing an
AMG-1, connect a power harness from P4 on the MPS-24A to P1 on the
AMG-1. This same power can be fed to other boards or modules requiring
internal power. Signaling between the CPU and the MPS-24A is
accomplished through connection of the power ribbon (71085) to P3 on
the MPS-24A.
When employing an NR45-24 remote battery charger, remove jumper
JP-1.
Figure 31: Field Wiring the MPS-24A Power Supply
System Harness
Connections
Secondary Power
27.6 VDC, supervised and power-limited.
Fast charge = 2 amps, trickle charge = 20 mA
Battery -
Battery +
Primary Power
120 VAC, 50/60 Hz, 1.8 amps max.
Neutral Out
Neutral In
Hot In
Hot Out
Earth Ground
Connect to chassis via a
grounding cable assembly.
+ -
+
-
4-Wire Smoke Detector Power
24 VDC (20.4-26.4, 200 mV ripple), 1 amp max. Filtered, regulated, and
resettable. Power-limited, but must be supervised via a power
supervision relay.
Indicating Appliance Power
Power-limited, filtered, regulated,
non-resettable, 3 amps (in alarm) max.
Power is supervised by output modules
(such as an ICM-4) in the FC-2000. Can
also be used to power ACM annunciators.
No Connection
System Common
Power Ribbon Connector
Power Harnesses (P2, P4)
Cut R27 to disable
Earth Fault Detection
LED Indicators
Ground Fault
Battery Fail
AC Power Fail
(not used)
Cut JP5 to make
indicating appliance
power on TB3
terminals 3 and 4 a
resettable 2-amp
max circuit.
Do not
cut jumper JP2.
MPM-2 Voltmeter/Ammeter
Connector
When employing
an NR45-24 remote
battery charger,
remove JP1.
MPS-24A
P3
P2
P4
P5
P6
R27
JP5
P7
JP1
JP2
TB2
CB1
F1
1 2 3 4 5 6
JP3
Battery Fuse (20A, 3AG)
1 2
TB1
TB3
AVPS-24 (P2) supervisory
cable connectors.
1 2 3 4 5 6 7 8
Ground
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