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FIVA Integrator Saturation - FIVA Fault: Main Spool at drain position.

We got the following fault in the MOP:

FIVA Integrator Saturation - FIVA Fault: Main Spool at drain position.

The FIVA controller integrator has compensated more than allowed.

Possible causes?

15 Feb, 15:53

Feb. 15, 2020, 3:53 p.m.
secondeng's gravatar image


Answer:

This fault may occur due to:

  • Loose connection on FIVA pilot valve set point,
  • Mechanically Stuck FIVA pilot valve
  • FIVA main spool stuck at tank or injection position
  • FIVA pilot valve receives a shutdown but CCU does not
  • CCU CH.70 always ask an output more than 12mA or always less than 12 mA.
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15 Feb, 15:56

Feb. 15, 2020, 3:56 p.m.
cheng's gravatar image


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