JB2020 (Customer) asked a question.

January 7, 2026 at 9:05 PM
PAL Fault Reporting

I am using a PAL air valve system on a conveyor setup. I am using the 25 pin d-sub connected version.

https://www.automationdirect.com/adc/shopping/catalog/valves/directional_control_solenoid_valves/control_interfaces/pal-e25

 

I have the correct pinout but I cannot find anything that describes what pin 22 "fault reporting" does?

 

Does it energize when a valve malfunctions or what is its actual behavior? I would like to hook it up to my PLC for alarms but I need to know how it functions.

  • 2 answers
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  • ADC Community_04 (AutomationDirect)

    The fault reporting pin (22) will output if a fault is present. Reference page 7-7 in the manual to help indicate what the fault is. Once a fault has occurred, most will require a power cycle in order to reset.

    Pin 23 connection will determine if the output signal is NPN or PNP.

    *Edit- To further clarify, if a fault is present, the fault reporting signal will be on solid while the valve base LEDs will flash the diagnostic code.

    image

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  • ADC Community_04 (AutomationDirect)

    The fault reporting pin (22) will output if a fault is present. Reference page 7-7 in the manual to help indicate what the fault is. Once a fault has occurred, most will require a power cycle in order to reset.

    Pin 23 connection will determine if the output signal is NPN or PNP.

    *Edit- To further clarify, if a fault is present, the fault reporting signal will be on solid while the valve base LEDs will flash the diagnostic code.

    image

    Expand Post
    Selected as Best

    • JB2020 (Customer)

      Thank You! I must've have missed that page whilst scanning through the manual.

 

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