NT200 Power Supply Module
4–6
1070 072 145-102 (01.07) GB
Battery failure is indicated by the Low Battery LED, and the S27.2 battery
fault bit goes HIGH.
During RAM operation, when a fault has been detected in the backup bat-
tery, the central processing unit remains in STOP mode, and the PLC pro-
gram is deleted.
The battery fault bit can be acknowledged by pressing the Battery Reset but-
ton on the front panel of the NT200 power supply module.
Replacing the battery
CAUTION
Backup battery discharge hazard!
Insert backup battery only while module is inserted in module rack.
Otherwise backup battery may be discharged when the module is re-
sting on an electrically conductive surface.
CAUTION
Loss of data!
Removing the backup battery with the 24 V power supply switched
off will cause the loss of all remanent data and of the PLC program
stored in RAM!
Replace backup battery only while 24 V power supply is switched on!
L Push the battery compartment cover downward and remove.
Battery cover
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