Mitsubishi MELSEC Q Series User Manual

18
TROUBLESHOOTING
18.2 Troubleshooting
18.2.1 When POWER LED of power supply module turns off
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17
STARTING MULTIPLE CPU SYSTEM
18
TROUBLESHOOTING
APPENDICESINDEX
18.2.1 When POWER LED of power supply module turns off
The following flowchart shows procedures to be taken when the POWER LED of the
power supply module turns off at the time of power-on or in operation of the C Controller
system.
Figure 18.1 When POWER LED turns off on power supply module
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
No
No
Is power
being supplied?
Is the power voltage
within the specified range?
The POWER LED turned off.
Supply power.
Is the power
supply module fixed?
Please consult your local
Mitsubishi service center or
representative, explaining the
details of the problem.
Yes
Change the supply voltage so that it
falls within the rated range.
Fix the power supply module
securely.
Turn off the input power supply.
Remove the cause (e.g. insufficient
power capacity, short circuit). Turn it
on after several minutes.
END
Is the overcurrent or
overvoltage protection
inactive?
Did the POWER LED turn on?
Did the POWER LED turn on?
Did the POWER LED turn on?
Did the POWER LED turn on?

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English