Mitsubishi Electric Melsec Q Series User Manual page 120

4
SETTINGS AND PROCEDURE TO OPERATION
(3) Battery replacement procedure
MES interface
module connector
Battery
connector
MES interface module
4
- 23 4.8 Battery
4.8.3 Battery replacement
When the life of the battery comes to an end, replace the battery, following the
procedure below.
The programmable controller must be powered ON for 10 minutes or more before
removing the battery.
The module holds the data on the memory for three minutes (backup power time) by
the capacitor even after the battery is removed. Note that the data on the memory
may be erased if the backup power time is exceeded. Replace the battery within three
minutes.
1 Stop file access.
(Turn the File access stop request (Y2) ON from OFF.)
2 Confirm that file access has stopped.
(Check the File access status (X2) is turned ON.)
Q6BAT battery
3 Power off the programmable controller.
4 Remove the module from the base unit.
5 Open the battery cover located on the bottom of the module.
6 Disconnect the connector plug of the Q6BAT from the jack of
the module. When disconnecting the connector, hold the
connector part so that the cables are not damaged.
7 Remove the Q6BAT from the battery cover.
8 Set a new Q6BAT to the cover in the right direction (with the
positive terminal of the battery facing the connector holder).
9 Securely insert the connector plug of the Q6BAT to the jack of
the module. Set the connector to the connector holder on the
cover.
10 Close the battery cover.
11 Mount the module back on the base unit.
12 Power on the programmable controller.
13 Check that the Battery status area (Buffer memory address:
7) is off.
14 If the Battery status area is off, the battery has been replaced
successfully. If the Battery status area is on, the battery may
not be installed properly. Repeat the procedure from step 1. If
it remains on, the possible cause is a hardware failure of the
battery. Perform the procedure with a different battery.