Mitsubishi Q12PRHCPU - 8.3.2 Power Supply Module Replacement Procedure

8
TROUBLESHOOTING
8.3 Replacing Module in Redundant System
8.3.2 Power Supply Module Replacement Procedure
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1
OVERVIEW
2
SYSTEM CONFIGURATION
3
TRACKING CABLE
4
PROCEDURE FOR STARTING UP A REDUNDANT SYSTEM
5
REDUNDANT SYSTEM FUNCTIONS
6
REDUNDANT SYSTEM NETWORKS
7
PROGRAMMING CAUTIONS
8
TROUBLESHOOTING
8.3.2 Power Supply Module Replacement Procedure
(1) Power Supply Module Replacement
*1
The control system power supply module cannot be replaced while redundant
systems are running.
When replacing the control system power supply module, switch its system to the
standby system by GX Developer, then, start the replacement operation.
Replace the power supply module for the standby system after turning the power
supply for the standby system OFF.
The standby system power supply can be turned off even when the redundant system
is active.
* 1: When a pair of redundant power supply modules is used in each system, one redundant power
supply module can be replaced at a time while the redundant system is running.
( Section 8.3.3)
Diagram 8.22 System where Control System Power Supply Module is Replaced
Diagram 8.23 System where Standby System Power Supply Module is Replaced
Control
system
Standby
system
Tracking cable
Replace after using GX Developer to
switch over to the standby system.
Power supply module
GX Developer
Control
system
Standby
system
Tracking cable
Replace after turning OFF
the standby system power.
Power supply module
GX Developer