When the I/O PW LED does not turn on
When the I/O PW LED does not turn on, check the following items.
Check item
Is the external power supply (24VDC) wired?
Is the external power supply (24VDC) turned on?
Is the voltage of the external power supply (24VDC) within the
specified range?
Action
Wire the external power supply (24VDC).
Turn on the external power supply (24VDC).
Set the voltage value within the range of performance specifications.
11 TROUBLESHOOTING
11.2 Checking the LEDs
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