3: Power - Honeywell Fire-Lite Alarms MS-9200UDLSE Manual

Read Status
MS-9200UDLS PN 52750:A 11/04/05
4.22.3 Power
Pressing 3 while viewing Read Status Screen #1 will cause the following screens to be
displayed:
BATTERY
24 V RST
CHARGER
NAC 1
NAC 2
NAC 3
NAC 4
A real-time display of the control panel voltages can be used to determine if a problem
exists in the system. Note that Power Screen #3 will only be displayed if the NACKEY
NAC option card is installed, in JP8 of the main circuit board, for Class B operation.
The following table lists the circuit being measured, possible conditions and their
respective voltage ranges:
Circuit Condition
Normal Battery (nominal)
Battery Low Battery
No Battery
24V Resettable Normal
24V Nonresettable Normal
Charger Normal
Normal
NAC 1 or NAC 2 Open Circuit
Short Circuit
POWER
27.21V
25.31
Power Screen #1
POWER
28.36V
-1.49V
-1.49V
Power Screen #2
POWER
-1.49V
-1.49V
Power Screen #3
Voltage Range
27.05 to 28.15 VDC
20.0 to 20.8 VDC
0 to 18.36 VDC
21.25 to 27.50 VDC
21.25 to 27.50 VDC
21.87 to 29.84 VDC
-1.3 to -1.6 VDC
-2.3 to -2.5 VDC
0 to 1.0 VDC
Operating Instructions
143