Applicable Systems
CPX-FVDA-P
Symptoms
The valve terminal reports a safety valve malfunction. A safety-related valve has activated unexpectedly or failed to respond.
Possible Causes
- Safety valve solenoid failure
- Safety valve spool stuck in wrong position
- Safety circuit signal error
Troubleshooting Steps
- Step 1: Test the safety valve solenoid operation
Solenoid energizes and de-energizes correctly - Step 2: Inspect the valve spool for free movement
Spool moves freely between positions - Step 3: Verify the safety circuit signal integrity
Signal is correct and reliable
How to Reset
To reset: Repair the safety valve, then reset and test the safety circuit.
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Source: Festo Valve Terminal Manual, Festo AG & Co. KG
Category: Hydraulic & Pneumatic
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