APG RCU-7000 user manual - Manual (Page 16)

RCU-7000 Series Rev. A1, 4/07
16
Automation Products Group, Inc.
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• Troubleshooting
Problem
Relay unit de-energize with level change
Possible Causes
• Miswiring between sensor and relay unit
• Set for improper select switch (Select SW) mode of relay unit
Remedies
• Ensure the wiring is correct.
• Change the select switch mode (H ON/L ON).
Problem
Relay unit energize with level changes
Possible Causes
• Miswiring between sensor and relay unit
• Set for improper select switch (Select SW) mode of relay unit
• Aff ection by stray capacitance
Remedies
• Ensure the wiring is correct.
• Change the select switch mode (H ON/L ON).
• Rewire as short as possible
Problem
Relay Chatter
Possible Causes
• Miswiring between sensor and relay unit
Remedies
• Ensure the wiring is correct.