Replacement Procedure Of Redundant Power Supply Modules - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

Replacement procedure of redundant power supply modules

The following describes the replacement procedure for a redundant power supply module in the online state (power is on).
(Assuming that the other redundant power supply module is normally operating)
1.
Check which redundant power supply module is to be replaced with either of the following methods.
• System monitor of an engineering tool
• SM151 (Power supply module failure detection) or SD151 (Power supply failure detection status)
2.
Power off the input power supply of the redundant power supply module to be replaced. (A continuation error occurs.)
3.
Replace the redundant power supply module with a new one.
When replacing a redundant power supply module, pay full attention to the mounting/removing procedure. ( Page 132
Mounting/Removing a Module or Terminal Block)
4.
Power on the input power supply of the new redundant power supply module.
5.
Check that the POWER LED turns on.
*1 When a remote head module is mounted on the right of the redundant power supply module, a continuation error is not detected by
turning on and holding SB000F (Clear error).
*2 When SB000F (Clear error) of the remote head module has turned on, turn off it.
• If one redundant power supply module has failed, remove the module from the base unit and replace it with
a normal one as soon as possible (within 14 days as a guide). Even if a redundant power supply module
does not fail, replacement is recommended after five years.
• In a redundant power supply system, a continuation error occurs when either of redundant power supply
modules has failed. Clear the error after replacing the defective redundant power supply module with a new
one.
• If a power supply module other than a redundant power supply module is mounted, a continuation error
occurs.
*2
6 MAINTENANCE AND INSPECTION
6.2 Periodic Inspection
*1
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