SMC Networks EX510-GPR1 Series Operation Manual page 61

Trouble No.9
Trouble Possible cause
Others
Broken solenoid valve
(DIA LED
fuse (GW unit)
lights up)
Trouble No.10
Trouble Possible cause
Incorrect branch
cable connection
Incorrect input and
GW unit controlling
Input unit
part power supply
power supply
connection
LED goes off
Input and GW unit
controlling part power
supply failure
Broken Input unit fuse
Trouble No.11
Trouble Possible cause
Incorrect sensor cable
Display LED
connection
corresponding
to input signal
goes off
Sensor failure
Trouble No.12
Trouble Possible cause
Inconsistence of used
sensor's polarity
Input unit falls
Improper sensor
in an
power supply voltage
operating
failure
Incorrect system
setting
Input unit failure
Investigation method of cause
Confirm the fuse for the solenoid valve
is not broken. (The information of
broken fuse is sent to PLC as extensive
diagnosis result and so you can check
on program software. The fuse is
mounted on an internal board and this
check method is recommended.)
Investigation method of cause
Confirm there is no breakage, incorrect
connection and looseness at connecting
part of the branch cable.
Confirm there is no incorrect connection
between input and GW unit controlling
part power supply and GW unit power
supply connector.
Confirm the condition of input and GW
unit controlling part power supply.
Confirm the fuse is not broken.
Investigation method of cause
Confirm e-con connector does not have
looseness at its connecting part.
Confirm there is no incorrect connection
of the sensor cable.
Replace with new one and check the
operation again.
Investigation method of cause
Confirm the specification of the sensor
is compatible to the one of the Input unit
(PNP, NPN).
Confirm the power supply voltage from
the Input unit is within power supply
voltage specified for the sensor. Also,
confirm the length of a branch cable and
current for the Input unit are within their
specifications.
Confirm a GW unit is set correctly.
Replace with new one and check the
operation again.
-60-
Solution
Replace with new GW unit and
check the operation again.
Solution
Fix the connection of the branch
cable.
Fix the connection.
Supply 24 VDC±10% for input
and GW controlling part power
supply of the GW unit.
Replace with a new one.
Solution
Connect the sensor cable
correctly.
Fix the connection.
Replace sensor.
Solution
Remount the Input unit or
sensor to make them
compatible.
Operate within specifications.
Fix the setting.
Replace Input unit.
No.EX##-OMI0032-C