Chapter 5 Maintenance
5 – 3
How to replace the battery
Battery
Battery connector
[+] Red lead wire side
[-] Black lead wire side
Connection part for battery
Space for lead wire storage
Front cover
Do not open the front cover more than 90 degree
when installing and removing the battery.
Figure 5.1 How to replace the battery
1] Prepare a new battery (LIBAT-H).
2] Confirm that the latest program is saved in your PC. If not, it is recommended to save for safety.
3] Power of PLC does not have to be removed while replacing battery.
4] Remove the old battery from the battery case and disconnect the battery cable from CPU.
5] Connect battery cable of new battery to CPU. (Red cable is to and black is to
.
6] Fold the excess lead wire and store it in the space for lead wire storage.
(Otherwise, the wire may be damaged by the front cover.)
* If replacing the battery without power supplied, power off time should be less than 1 minute.
DANGER
Precaution when handling the battery.
Use LIBAT-H for the new battery. Be careful because a false replacement may cause the battery to
explode.
Do not connect + and –
of the battery reversely, charge them , take them apart, heat them, throw them
into the fire, short them.
CAUTION
Disposal (collection) of the battery
Old battery should be
individually put in plastic bag or similar (to prevent short circuit and a disposal
company should be requested to dispose of them.
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