2 Connecting procedure of A10BAT
Indication for replacement from A6BAT to A10BAT, and replacement of life-ended
A10BAT is as follows. The power for programmable controller needs to be ON for
10 minutes or longer before battery removal.
Make sure to complete the battery replacement within 3 minutes. Failure to do so
may delete the data in memory, although it includes a condenser to back up the
memory for a while without battery. When the MELSEC-AnS series is used as a
UL-certified product, the A10BAT replacement must be done by service personnel.
The service personnel are defined as experienced technicians who have been
sufficiently educated and trained, and are capable of perceiving and avoiding
operational hazard.

Backup the program and the data.
Replacing battery.
Turn off the programmable
controller power supply.
1)
Replacing from
A6BAT to A10BAT
Replacing from
A10BAT to A10BAT
Unscrew the mounting screws (two
places) and remove the A10BAT
from the power supply and CPU
modules.
Disconnect the A10BAT battery
connection cable from the CPU
module.
Open the front cover of the CPU
module.
Remove the battery connector of
the CPU module, and pull out
A6BAT being used.
Connector
of battery
4)
Open the front cover of the CPU
module.
Confirm the type
of the old battery.

5.