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Energize to trip Vs De-energize to trip DVC (digital valve controller)

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helpyou

helpyou

Automotive
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HI

Can someone tell me when to use Energize to trip Vs De-energize to trip DVCs. I have seen for example in antisurge valves when valve is open (fail state), current measured is 20mA.

Thank you
 
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That choice is per your process/equipment operation and safety.
 
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