Flowserve PMV D20 Instrukcja Użytkownika Pobierz pdf (Strona 31)

11.3 PMV D20 symptoms and solutions

Failure Probable Cause Corrective action

No LED is flashing. Current source below 3,6 mA . Verify current source

supplies at least 3,6 mA.

Incorrect wiring polarity. Check wiring for correct

polarity.

Valve position reading Stem position sensor mounting Reposition sensor.

is not what is expected. is off 180 degrees.

D20 not calibrated. Calibrate D20.

Tight shutoff MPC (Minimum No action.

position cutoff) is active.

D20 goes in wrong Change direction

direction. (Section 9.4).

D20 is oscillating. Decrese gain (Section 9.6).

D20 is responding slow. Increse gain (Section 9.6).

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Flowserve PMV D20 Instrukcja Użytkownika Strona 31