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MELSEC-Q
8 TROUBLESHOOTING
8.5 Procedure for Replacing a Normally Operating Redundant Power Supply Module
This section explains the procedure for replacing a redundant power supply module
that is normally operating.
The replacement is available on a remote I/O station without SINGLE PS.DOWN (error
code 1510) being detected.
Start
End
Turn ON SB000F of the master module.
Replace the redundant power supply module.
Power ON a new redundant power supply module.
Check that the POWER LED on the new redundant
power supply module is lit green.
Turn OFF SB000F of the master module.
Verify the redundant power supply module to be
replaced.
Power OFF the redundant power supply module to
be replaced.
POINT
(1) This replacement procedure is executable when the first five digits of serial No.
for the master module and remote I/O modules are “08112” or later.
(2) This replacement procedure is executable only while the remote master station
performs baton (or token) passing (SB0047 is OFF).
(3) In a multiplexed remote I/O network (including the one that supports redundant
systems), SB000F can be manipulated only from the station acting as a master.