Panasonic FP-X0 L14R User Manual page 63

5.7.3 Replacement of Backup Battery
The procedure for replacing the backup battery is as follows.
Procedure
1. Supply power to the control unit for more than five minutes.
Charge the built-in capacitor to retain the contents of the memory during the replacement of the battery.
2. Turn off the power supply.
When the power is off, supply the power to the control unit for more than five minutes to charge the built-
in capacitor to back up the memory during the replacement of the battery.
3. Remove the expansion cover located at the surface of the control unit.
4. Remove the used battery.
5. Install a new battery within two minutes after turning off the power.
6. Install the expansion cover.
Note:
If the power is not sufficiently supplied or it takes too much time to replace the battery, retained memory
data may be lost.
5.7.4 Lifetime and Time for Replacement of Backup Battery
Battery lifetime
Type of control unit
L40, L60
Note1) The battery lifetime is the value when no power at all is supplied.
Note2) Note that the lifetime may be shorter than the typical lifetime depending on the use conditions.
Note3) The battery is used for the battery detection circuit even when power is supplied. The lifetime is
about twice as long as that when no power is supplied.
Detection of battery error and time for replacement
Special internal relays R9005 and R9006 will go on if the battery voltage drops. Create a program to
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announce errors to the outside as necessary.
When the system register No.4 "Battery Error Alarm" is enabled, the ERR.LED of the control unit will
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flash.
Although data will be retained for about a week after the detection of battery error without power, the
-
battery should be replaced as soon as possible.
Note:
If a week has passed without power after the special internal relays R9005 and R9006 turned on or the
-
ERR.LED flashed, retained memory data may be lost.
Regardless of how much time has passed after the detection of battery error, supply power to the
-
control unit for more than five minutes before replacing the battery.
Special internal relays R9005 and R9006 will be on when a battery error is detected regardless of the
-
setting of system register No.4.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
Battery lifetime
4.6 years or more
Suggested replacement interval
7 years
5-15