Mitsubishi Melsec-Q Series User Manual page 308

From (A) on the previous page
Power on the programmable controller again.
Is the POWER LED on in green?
If this problem occurs frequently,
replace the power supply module.
If the same problem still remains after
the replacement, please consult your
local Mitsubishi service center or
representative, explaining a detailed
description of the problem.
From (B) on the previous page
Check the total internal current
consumption of the modules that are
configuring the system.
Hardware fault
Check the operation starting from the
smallest system.
For the inoperable module, please
consult your local Mitsubishi service
center or representative, explaining
a detailed description of the problem.
12 - 13
Is the POWER LED off?
NO
NO
Is the POWER LED
flickering in orange?
YES
Is the total current
exceeding the rated output current
of the power supply module?
Not exceeding
Figure 12.6 When the POWER LED has turned off
YES
Replace the faulty module.
YES
Completed
NO
Replace the faulty module.
Exceeding
Reexamine the system configuration
not to let the total current exceed the
rated output current of the power
supply module.