LS Industrial Systems SV-iS7 PLC - Troubleshooting Flowchart Used When the IO Part Doesnt Operate Normally

Chapter 10 Troubleshooting
10-4
10.2.3 Troubleshooting flowchart used when the I/O part doesn’t operate normally.
The following flowchart explains corrective action procedure used when the I/O module doesn’t operate normally.
When the I/O module doesn’t work normally.
Check the status of P40
by KGLWIN.
Is the indicator LED of
the P40 on?
No
Replace the connector of
the terminal board
Measure the voltage of
power supply in P40
Correct wiring
Yes
Is the
voltage of power supply for
load applied?
Is the output
wiring correct
Is the
terminal connector
a
pp
ro
p
riate?
Is it in normal condition?
Separate the external wiring,
then check the condition of
output module.
Is it in normal condition?
Check the status of P40
Replace the Unit
Continue
Yes
No
Yes
No
Yes
No
Yes
Yes
No
No