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Energize to Trip and Fail Safe Open

Hello,

I'm working on a project and we are using Fisher DVC6200 SIS as the valve controller. For the blowdown valves the EPC has specified "energize to trip" valves. In the P&ID these valves are identified as "Fail Open". 

Reading through the documentation Quick start guide (D103556X012), on page 42 there is a functionality described as "Energize to Trip (ETT) Digital Valve Controller and De-Energize to Trip (DETT) Solenoid Valve".

My question is the following: does the "Energize to Trip (ETT) Digital Valve Controller and De-Energize to Trip (DETT) Solenoid Valve" is the equivalent of "Energize to trip and Fail Open"?

Regards,

Cristobal

1 Reply

  • Cristobal,
    The Energize to Trip in the DVC6200SIS simply means
    1. 4mA input signal = full pneumatic output
    2. 20mA input signal = <1psi output
    If you need to further discuss please send me an email at stanley.af@emerson.com
    Regards,
    A. F. Stanley