Led Lighting State; The Power Led On The Power Supply Module - Mitsubishi Electric MELSEC Q Series User Manual

23.1

LED Lighting State

The LED lighting states are as shown below.

The POWER LED on the power supply module

Off
On(red)
On (orange)
The LIFE LED on the Life detection power supply module
Off
On(red)
Flash(red)
POWER LED of the redundant power supply module is lit red
The MODE LED on the C Controller module
When MODE LED is not lit
When ERR.LED is lit or flashing
When RUN LED is kept flashing
When U RDY LED is not lit
When the output module LED is not lit
23.1.1
The POWER LED on the power supply module
(1) When POWER LED is not lit
Check the following items.
MODE LED of the C Controller module is lit.
Power supply voltage is not appropriate.
The internal current consumption for the entire system
exceeds the rated output current of the power supply
module.
POWER LED is lit when the power supply is turned on
again with all modules other than the power supply
module disconnected.
(2) When POWER LED is lit red
Check the following items.
POWER LED is lit red even when the pertinent power
supply module is removed and installed to another normal
base unit and then the power is turned on again.
LED lighting state to be checked
Check item
Check item
CHAPTER 23 TROUBLESHOOTING
Page 395, Section 23.1.1 (1)
Page 395, Section 23.1.1 (2)
Page 396, Section 23.1.1 (3)
Page 396, Section 23.1.2 (1)
Page 396, Section 23.1.2 (2)
Page 396, Section 23.1.2 (3)
Page 397, Section 23.1.3
Page 397, Section 23.1.4
Page 397, Section 23.1.5
Page 398, Section 23.1.6
Page 398, Section 23.1.7
Page 398, Section 23.1.8
Corrective action
The power supply module has failed.
Replace the power supply module.
Supply power voltage within the specified range.
Reexamine the system configuration so that the internal
current consumption does not exceed the rated output
current.
Repeatedly supply power to the system, returning the
modules back to the system one by one.
The last installed module at the time POWER LED
becomes no longer active has failed. Replace the
defective module.
Corrective action
The power supply module has failed.
Replace the power supply module.
Reference
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395
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