SMC Networks EX600-ED Series User Manual

-48-
No. DOC1045423
No.
Problem
Presumed cause
Troubleshooting
13
The digital input device
does not work correctly.
Polarity of input does not
match.
If the polarity (PNP, NPN) of the input unit and the input
device are different, replace one of them to make the
combination match.
Power supply for control
and input is out of range.
Check if the PWR LED of the SI unit is green ON.
If the LED is off or red ON, supply 24 VDC ±10% to the
power supply for control and input.
Wiring or connection is
defective.
Connect the wiring correctly between the input device
and the input unit.
Input unit has failed.
Replace the input unit and check the operation.
Input device failure.
Replace the input device and check the operation.
Or refer to the troubleshooting of the input device used.
The digital output device
does not work correctly.
Polarity of output does not
match.
If the polarity (PNP, NPN) of the output unit and the
output device are different, replace one of them to
make the combination match.
Power supply for output is
out of range.
Check if the PWR(V) LED of the SI unit is green ON.
If the LED is off or red ON, supply 24 VDC +10/-5% to
the power supply for output.
Wiring or connection is
defective.
Connect the wiring correctly between the output device
and the output unit.
Output unit has failed.
Replace the output unit with a normal one and check
the operation.
Output device failure.
Replace the output device and check the operation.
Or refer to the troubleshooting of the output device
used.
Program etc. are wrong.
(1) Check if the I/O address assignment, control
program, etc. are correct.
(2) Check the status of the PLC and set the PLC to
RUN state.

SMC Networks EX600-ED Series Specifications

General

Brand	SMC Networks
Model	EX600-ED Series
Category	Industrial Equipment
Language	English