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Menus Descriptions
Setup
Inner Loop Menu for Three-Stage Valve Drivers
ITEM
DESCRIPTION
Inner Loop Gain
Sets the inner loop’s proportional gain, which affects the inner loop
response of the pilot valve.
Inner Loop Rate
Sets the inner loop’s derivative gain, which affects the servovalve’s
stability at higher inner loop gain settings.
Rate Input Selection
Spool Position: Sets the feedback from the servovalve’s spool as the
rate input. Most systems use this setting.
Inner Loop Error: Sets the inner loop error as the rate input. This is
the difference between spool position feedback and spool position
command.
Conditioner Menu for Three-Stage Valve Drivers
ITEM
DESCRIPTION
Excitation
Sets the amount of AC excitation that the conditioner applies to the
servovalve’s inner spool.
Phase
Sets the phase for the demodulation circuitry that receives the
sensor’s output.
The sensor’s output rides on the conditioner’s excitation signal,
which is an AC signal. An optimal phase shift yields the maximum
DC output from the conditioner.
Offset
Sets the offset applied by the conditioner to the sensor’s output
signal.
Gain
Sets the amount of gain applied by the conditioner to the sensor’s
output signal.
Gain values affect tuning settings and the noise sensitivity of the
valve command.
Polarity
Sets the polarity of the spool output or inner loop output signal to
Normal or Invert.
Polarity cannot be changed when the station pressure is on.
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Menus Descriptions
FlexTest ™ SE