The Life Led On The Life Detection Power Supply Module - Mitsubishi Electric MELSEC Q Series User Manual

(3) When POWER LED is lit orange
Check the following items.
POWER LED is lit orange even when the power is turned
on again.
23.1.2

The LIFE LED on the Life detection power supply module

(1) When LIFE LED is not lit
Check the following items.
LIFE LED is lit red for 1 second when the power is turned
on again.
LIFE LED is kept off when the power is turned on again.
(2) When LIFE LED is lit red
Check the following items.
The ambient temperature of the life detection power
supply module exceeds the range of 0-55°C.
LIFE LED is lit red even when the power is turned on
again.
(3) When LIFE LED is flashing red
Check the following items.
LG-FG wiring status (grounding and routing) is correct.
QCPU User's Manual (Hardware Design,
Maintenance and Inspection)
Remark
For lighting status other than the above, refer to the following.
QCPU User's Manual (Hardware Design, Maintenance and Inspection)
396
Check item
Check item
Check item
Check item
Corrective action
The power supply module has failed.
Replace the power supply module.
Corrective action
The life detection power supply module has reached the
end of life.
Replace the power supply module.
The power supply module should be replaced as the life
diagnostics is impossible.
Corrective action
Keep the operating ambient temperature within the range
of 0 to 55°C.
Stop the operation of the power supply module for a while,
and resupply power to the system after the internal
temperature of the module is lowered.
Replace the pertinent power supply module if power-on
again does not light the LED green or orange.
Corrective action
Arrange correct wiring.