Mitsubishi Q01CPU User Manual page 312

11
MAINTENANCE AND INSPECTION
(3) Replacement procedure of the Q7BAT battery for the High Performance
Replacing battery
Backup the program and the data.
Turn off the programmable controller
power supply.
Remove the CPU module from the
base unit.
Remove the battery holder at the
bottom of the CPU module.
Disconnect the battery connector,
and pull out the Q6BAT/Q7BAT
being used. *1
Confirm
the type of the old
battery.
Q6BAT to be
replaced by Q7BAT.
Connect the Q7BAT to the battery
connector of the CPU module, and
set it into the connector holder of the
battery holder.
Set the battery holder to the
CPU module.
Install the CPU module into the
base unit.
Turn on the programmable controller
power supply.
Monitor
SM51 to verify
on/off.
Monitor
SD52 to check if bit 0 is
ON.
Failure of CPU module battery
11
- 24 11.3 Battery Life and Replacement Procedure
11.3.3 Replacement procedure of the CPU module battery
model QCPU, Process CPU, Redundant CPU and Universal model QCPU
*1: When disconnecting the battery
connector, hold the connector part being
careful not to damage the battery cable.
Q7BAT to be
Disengage the catch on one side of
replaced by
the battery holder to disassemble the
Q7BAT.
holder into two, and remove the
Q7BAT.
Insert the new Q7BAT into the holder
in the correct direction, and
reassemble the battery holder so that
the battery cable comes out of the
hole in the holder connection. (Push
the holder parts in until they click.)
OFF
ON
Bit 0 is OFF.
Bit 0 is on.
Diagram 11.4 Replacement procedure for the Q7BAT battery
Table11.10 Backup time
Backup time
3 minutes
Connector
Connector
stopper
CPU module
Battery holder
Completed
Battery holder
Battery
Q7BAT
Latch
Battery holder