Sram Card Cpu Module Battery Replacement Procedure - Mitsubishi Q01CPU User Manual

11
MAINTENANCE AND INSPECTION

11.3.5 SRAM card CPU module battery replacement procedure

Replace the SRAM card battery in the following procedure.
(1) Procedures for replacing battery of Q2MEM-1MBS or Q2MEM-2MBS
Replacing battery
Backup the program and the
data.
Open the front cover while the
programmable controller power
supply is on.
With a flat-blade screwdriver, etc.,
remove the battery holder locking
switch from the LOCK position.
Remove the battery holder
from the SRAM card.
Remove the old battery from its
holder.
Insert a new battery into the
holder in the correct direction.
Check that the battery holder
fixing switch is set to the LOCK
position.
Deeply insert the SRAM card
into the battery holder.
Monitor
SM52 to verify on/off.
Monitor
SD52 to check if bit 1 and bit
2 are ON.
Failure of SRAM card battery
11
- 30 11.3 Battery Life and Replacement Procedure
11.3.5 SRAM card CPU module battery replacement procedure
Battery holder
OFF
ON
Bit 1 and bit 2 are OFF.
Bit 1 and bit 2 are ON.
Diagram 11.7 SRAM card CPU module battery replacement procedure
Release
direction
Battery holder
fixing switch
CPU module
main unit
Used battery
New battery
Lock
direction
Battery holder
fixing switch *
* : The battery holder fixing switch is
automatically set to the "LOCK" position
when the battery holder is removed. In its
position, insert the battery holder to the
end.
Put + toward you.
Completed
CPU module
main unit
Flat blade
screwdriver
CPU module
main unit
CPU module
main unit