FireWarden 100-2/E — P/N 52778:A 11/04/2005 139
Read Status Operating Instructions
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 Condition Voltage Range
Battery
Normal Battery (nominal) 27.05 to 28.15 VDC
Low Battery 20.0 to 20.8 VDC
No Battery 0 to 18.36 VDC
24V Resettable Normal 21.25 to 27.50 VDC
24V Nonresettable Normal 21.25 to 27.50 VDC
Charger Normal 21.87 to 29.84 VDC
NAC 1 or NAC 2
Normal -1.3 to -1.6 VDC
Open Circuit -2.3 to -2.5 VDC
Short Circuit 0 to 1.0 VDC
POWER
BATTERY 27.21V
24 V RST 25.31
Power Screen #1
POWER
CHARGER 28.36V
NAC 1 -1.49V
NAC 2 -1.49V
Power Screen #2
POWER
NAC 3 -1.49V
NAC 4 -1.49V
Power Screen #3
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