PKSC300 valve control issues
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In the PKSC300 system, one cut-off valve cannot be controlled; the solenoid valve fails to open, and the operation interface shows \"uncommanded\". An on-site inspection reveals that the feedback signal is normal and the fuse connected to the solenoid valve’s output is not blown, yet the valve still cannot be controlled – the solenoid valve does not receive power. Has anyone encountered this issue?
\"Uncommanded\" should mean that a command was given to operate the valve, but it did not reach the desired position within the specified time. Suggestion: ① Check whether the corresponding channel has an output. (It can be seen on the CB, or measured using a multimeter.) ② Is the corresponding relay coil powered? (You can check the indicator light of the relay.) ③ Is there power at the corresponding relay contact? (This can be determined using a multimeter.) ④ Is there electricity in the wiring at the intermediate connection point? (This can be determined using a multimeter) Is there power at the solenoid valve corresponding to ⑤? (It can be determined using a multimeter) Is the air supply for solenoid valve ⑥ functioning properly?
The valve is stuck and cannot move – can this happen?
Yes, as long as there is no feedback on the corresponding switch position by the specified time. Then Uncommond will appear. So the most important thing is to go through it step by step to see where the problem lies