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8.3 Replacing Module in Redundant System
8.3.3 Redundant Power Supply Replacement Procedure
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8.3.3 Redundant Power Supply Replacement Procedure
When a pair of redundant power supply modules is used in each system, one redundant
power supply module can be replaced at a time after powering off the module, while the
redundant system is running. This operation can be performed in both systems.
System control can be continued while the power supply module is being replaced,
because another power supply module supplies power to the modules mounted on the
same base unit.
(1) Procedure for Replacing Redundant Power Supply Modules
The procedure for replacing redundant power supply modules is shown in the
Diagram 8.25.
Confirming the Replacement Target Power Supply Module
Identify the faulty power supply module using the System Monitor of GX Developer.
Power OFF the Target Power Supply Module
Removing the Wiring
Disconnect the power supply cable from the target power supply module.
Replacing the Power Supply Module
1) Remove the power supply module from the main base unit.
2) Mount the replacement power supply module to the main base unit.
Refer to the QCPU User's Manual (Hardware Design, Maintenance and Inspection)
regarding disconnecting and attaching power supply modules.
Wiring
Wire the power supply cable to the power supply module.
Power ON the Power Supply Module
Power on the new power supply module.
Confirming the POWER LED of the Power Supply Module
Confirm that the power supply module's POWER LED is ON, and that power is being supplied
properly.
Diagram 8.25 Redundant Power Supply Replacement Procedure
Control
system
Standby
system
Tracking cable
GX Developer
Replace the redundant power supply module.
Redundant Power supply module
Start
Completed