12
TROUBLESHOOTING
12.2 Troubleshooting
12.2.5 Flowchart for when the "POWER" LED turns off
12 - 11
9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
12.2.5 Flowchart for when the "POWER" LED turns off
The following shows the flowchart for when the "POWER" LED of the power supply
module turns off at programmable controller power-on or during operation.
(To next page)
On (red)
Is there a
power supply?
Is the power
supply voltage within
the voltage range given in the
specifications?
Is the power
supply module fixed?
Completed
The supply voltage should be within
the rated range.
Properly fix the power supply module.
The "POWER" LED has turned off.
The base unit that includes the
corresponding power supply module
is faulty.
(Replace it with a normal base unit.)
Remove all modules other than
the power supply module from
the base unit.
On (green)
YES
YES
YES
NO
NO
NO
Off
Off
Off
Supply power.
Section 12.2.6 Flowchart for
when the "POWER" LED turns
on (red)
How is the "POWER" LED?
Off
: In this applies to the redundant power supply module.
Section 12.2.6 Flowchart for
when the "POWER" LED turns
on (red)
Section 12.2.6 Flowchart for
when the "POWER" LED turns
on (red)
On (red)
How is the "POWER" LED?
How is the "POWER" LED?
How is the "POWER" LED?
On (red)
On
(green)
On
(green)
On
(green)
Section 12.2.6
Section 12.2.6
Section 12.2.6