Troubleshooting
Overall system
No. | Item | Solution/Corrective action |
1 | Solenoid valve | Check the power for solenoid valves/output ( 24VDC ) |
| doesn't work | 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. |
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2 | Solenoid valve doesn't | Check the wiring specification for manifold block |
| work as programmed | assembly and modify the program. |
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3 | Power LED of | Short circuit of input sensor due to failure etc. is |
| Input unit is blinking | 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. |
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4 | No signal is input even | Check the power for input and controlling GW/SI |
| though connected with | ( 24VDC ) is supplied. |
| sensor(s) | Check indicator LED of each block lights on. |
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5 | COM A - D LED | Check Input unit is connected to the branch of unlit |
| doesn't light on | COM port, and the branch cable with M12 connector |
|
| is connected to the Input unit. |
|
| When connecting no Input unit, connect a terminal |
|
| plug. |
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|
EtherNet/IP compatible communication
No. | Item | Solution/Corrective action |
1 | MS LED status | The effect of noise is possible. Check |
| Normal status : Lit in green | the installation conditions. If the trouble |
| Fatal failure : Lit in red | cannot be solved even if the installation |
|
| conditions are checked, contact our |
|
| sales branch. |
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|
2 | NS LED status | Check the signal line from PLC is |
| Offline/Power is OFF : Unlit | connected. |
| Online/Communication is not established : | Check the wiring and pin Nos. |
| Blinking in green | Check the data rate and address |
| Online/Communication is established : | setting. |
| Lit in green |
|
| Minor communication error occurred : |
|
| Blinking in red |
|
| Fatal communication error occurred : |
|
| Lit in red |
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3 | PWR LED is unlit | Check the power for solenoid |
|
| valves/output (24VDC) is supplied. |
|
| Check the power supply voltage for |
|
| solenoid valves/output doesn't drop |
|
| under 20V. |
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42 | 43 |
