2) How to Replace Backup Battery
• Replace the battery within three minutes, after applying the power to the programmable controller more than one
minute.
Procedure
3. Removable Terminal
• Removable terminal construction is used for C24, C40, C56, and C72 series Control Units. This makes wiring of
the I/O terminal easier.
If the Control Units are replaced for some reason, there will be no need to disconnect and re-connect all the cables
to the terminals again by changing the terminal blocks.
F.G.
PROG.
max.
min.
PROG.
ERR.
max.
min.
1 Turn OFF the power of the programmable
controller.
2 Remove the memory unit cover.
3 Disconnect the connector of the backup battery
and pull it up so that the battery cover is
removed, as shown in the figure on the right.
4 Take out the battery by pulling up the lead
wire.
5 Install a new battery and connect it to the
connector on the programmable controller.
6 Replace the battery cover and the memory unit
cover.
7 Turn ON the power of the programmable
controller.
217
7-3. Maintenance
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