Maintenance; Replacement Of Backup Battery; Battery Life; Using Backup Battery Type - Panasonic FP-M Hardware Manual

6-4. Maintenance

Although programmable controllers have been designed in such a way to minimize maintenance and offer trouble-
free operation, several maintenance aspects should be taken into consideration. If preventive maintenance is
performed periodically, you will minimize the possibility of system malfunctions.

1. Replacement of Backup Battery

1) Battery life

Control board
C20R, C20T, and C32T types
C20RC, C20TC, and C32TC types
• When the voltage of the backup battery lowers, special internal relays R9005 and R9006 turn ON and the ERR.
LED turns ON. Replace the backup battery within a month after this battery error is detected.

2) Using backup battery type

Item Part number
Backup battery AFB8801
Caution:
• Never throw batteries into a fire. Do not dispose of them in trash that will be incinerated.

3) How to replace backup battery

• Replace the battery within 3 minutes, after applying the power to the FP-M control board more than 1 minute.
Procedure
1 Turn OFF the power of FP-M control board.
2 Lift the backup battery on the FP-M control board
using insulated slotted screwdriver as shown on the
right.
3 Remove the backup battery from the backup battery
holder as shown on the right.
4 With the + side facing up, insert the new backup
battery into the backup battery holder by sliding it in
sideways as shown on the right.
5 Turn ON the power of the FP-M control board.
Note:
• Before inserting the new battery, check that nothing is attached to the + and – surfaces.
Battery life (at 25 ˚C/77 ˚F ambient temperature)
Approx. 53,000 hours (approx. 6 years)
Approx. 27,000 hours (approx. 3 years)
Description
Lithium battery, BR2032/CR2032 type or equivalent
For all FP-M control boards

6-4. Maintenance

Backup battery holder
Backup battery
Insulated slotted
screwdriver
New backup
battery (+ side)
Backup battery holder
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