Reduced Wiring System Instruction Manual

4342
MS LED status
Normal status : Lit in green
Fatal failure : Lit in red
1
The effect of noise is possible. Check
the installation conditions. If the trouble
cannot be solved even if the installation
conditions are checked, contact our
sales branch.
NS LED status
Offline/Power is OFF : Unlit
Online/Communication is not established :
Blinking in green
Online/Communication is established :
Lit in green
Minor communication error occurred :
Blinking in red
Fatal communication error occurred :
Lit in red
2
Check the signal line from PLC is
connected.
Check the wiring and pin Nos.
Check the data rate and address
setting.
PWR LED is unlit
3
Check the power for solenoid
valves/output (24VDC) is supplied.
Check the power supply voltage for
solenoid valves/output doesn't drop
under 20V.
Item No. Solution/Corrective action
EtherNet/IP compatible communication
Troubleshooting
Solenoid valve
doesn't work
Solenoid valve doesn't
work as programmed
1
2
Check the power for solenoid valves/output ( 24VDC )
is supplied.
Check the connection of the branch cable with M12
connector to SI unit.
Check Power LED and Communication LEDs of SI
unit light on.
Check the wiring specification for manifold block
assembly and modify the program.
Power LED of
Input unit is blinking
3 Short circuit of input sensor due to failure etc. is
possibly caused. Check the sensor.
A current larger than specified value is flowing
through the power line for input and controlling
GW/SI. Check the power supply section.
No signal is input even
though connected with
sensor(s)
4 Check the power for input and controlling GW/SI
( 24VDC ) is supplied.
Check indicator LED of each block lights on.
COM A - D LED
doesn't light on
5 Check Input unit is connected to the branch of unlit
COM port, and the branch cable with M12 connector
is connected to the Input unit.
When connecting no Input unit, connect a terminal
plug.
Item No. Solution/Corrective action
Overall system