Flowchart For When The "Power" Led Turns On (Red) - Mitsubishi Q01CPU User Manual

12
TROUBLESHOOTING

12.2.6 Flowchart for when the "POWER" LED turns on (red)

The following shows the flowchart for when the "POWER" LED of the redundant power
supply module turns on red at power-on or during operation of the programmable
controller.
Remove the corresponding
redundant power supply module,
and mount it onto the normal
redundant base unit.
(At this time, do not mount any
modules other than the redundant
power supply module.)
Return the corresponding
redundant power supply module to
the original system, and remove all
modules other than the redundant
power supply module from the
redundant base unit.
Check the sum of internal current
consumptions of the modules that
comprise the system.
Hardware fault
check operations checks in the
order starting with the minimum
system.
If the module will not work, please
consalt your local nearest
Mitsubishi or representative,
explaining a detailed description of
the problem.
The "POWER" LED has
turned on (red).
How is the
"POWER" LED of the
redundant power supply
module?
On (green)
How is the
"POWER" LED of the
redundant power supply
module?
On (green)
Does the total
current exceed the rated
output current of the power
supply module?
No
Diagram 12.6 Flowchart for when the "POWER" LED is turned on red
12.2.6 Flowchart for when the "POWER" LED turns on (red)
The corresponding redundant power
Off or On (red)
supply module is faulty.
(Replace it with a normal one.)
Section 12.4.2
( Section 12.4.2)
The redundant base unit that
includes the corresponding
Off
redundant power supply module is
faulty. (Replace it with a normal
redundant base unit.)
Reexamine the system configuration
Yes
to make the total current less than
the rated current consumption of one
redundant power supply module.
12.2 Troubleshooting
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