Johnson Controls FC-2000 Installing page 43

System Harness
Connections
Secondary Power
27.6 VDC, supervised and power-limited.
Fast charge = 2 amps, trickle charge = 20 mA
Primary Power
120 VAC, 50/60 Hz, 1.8 amps max.
Neutral Out
Neutral In
Earth Ground
Ground
Connect to chassis via a
grounding cable assembly.
TB1
1
All manuals and user guides at all-guides.com
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.
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.
Battery -
Battery +
Hot In
Hot Out
1 2
2 3 4 5 6 7 8
TB2
Battery Fuse (20A, 3AG)
CB1
F1
JP5
JP1
MPM-2 Voltmeter/Ammeter
When employing
Connector
an NR45-24 remote
battery charger,
remove JP1.
Figure 31: Field Wiring the MPS-24A Power Supply
+ -
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
1 2 3 4 5 6
TB3 R27
P3
P7
Installation—Installing the FC-2000
Power Harnesses (P2, P4)
P2
Cut R27 to disable
Earth Fault Detection
P5
AVPS-24 (P2) supervisory
cable connectors.
P4
P6
LED Indicators
Ground Fault
Battery Fail
AC Power Fail
(not used)
Cut JP5 to make
JP3
indicating appliance
power on TB3
terminals 3 and 4 a
resettable 2-amp
max circuit.
JP2
Do not cut jumper JP2.
MPS-24A
43