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Read Status
4.22.3 Power
Pressing 3 while viewing Read Status Screen #1 will cause the following screens to be displayed:
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
Battery
24V Resettable
24V Nonresettable
Charger
NAC 1 or NAC 2
FireWarden 100-2/E — P/N 52778:A 11/04/2005
POWER
BATTERY
24 V RST
Power Screen #1
POWER
CHARGER
NAC 1
NAC 2
Power Screen #2
POWER
NAC 3
NAC 4
Power Screen #3
Condition
Normal Battery (nominal)
Low Battery
No Battery
Normal
Normal
Normal
Normal
Open Circuit
Short Circuit
Operating Instructions
27.21V
25.31
28.36V
-1.49V
-1.49V
-1.49V
-1.49V
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
139
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