SMC Networks EX180-SMJ3 Series Operation Manual page 20

Reference
Problem
No.
L RUN L ERR
6 LED is LED
ON flashes
Solenoid valve
7
malfunction
Possible cause
Incorrect
Confirm the communication speed
change of the
setting has not been changed whilst
communication
power is supplied to the SI unit.
speed
Incorrect Confirm the node number setting has
change of the not been changed whilst power is
node number. supplied to the SI unit.
Check that there is no equipment or
Communication high voltage line that can generates
failure noise around the communication and
power supply lines.
Check the operation by replacing the
Solenoid valve solenoid valve.
failure Or refer to Troubleshooting for the
solenoid valve.
Connection
between SI unit Check that there is no contact failure
and valve such as bending of the connector pins
manifold is between the SI unit and valve manifold
defective
More than 33 Check the total number of solenoid
valves are valves connected to the manifold is 32
connected or less.
-19-
Investigation method Countermeasure
Shut off the power
supply for the SI unit.
After setting correctly
supply power to the SI
unit.
Keep the communication
and power supply cables
away from the noise
source.
Check the
Troubleshooting for the
solenoid valve.
Or contact to the
department in charge of
the solenoid valve
Connect the SI unit and
valve manifold properly.
Ensure the total number
of solenoid valves is 32
or less.
No.EX※※-OMO0007-D