Flexible Automation
Power supply modules
3-12
1070 072 143-101
Installation and replacement of the buffer battery
CAUTION 3.5
Data loss!
Removing the buffer battery when the power supply module is
switched off leads to the loss of all remanent data as well as the PLC
program in the RAM memory!
Only replace the buffer battery while the power supply module is
switched on!
L Unscrew the buffer battery seal.
Seal
Buffer battery
Reset key
Fig. 3-10 NT1 and NT2, buffer battery
L Remove old buffer battery.
L Gently knock the new buffer battery on solid undersurface so that the inner
layer of oxide is destroyed.
L Insert new battery, observing the correct polarity.
L Screw in the buffer battery seal again.
A battery failure is indicated by the 7segment display showing a
. The
battery failure must be acknowledged.
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