Imported power module 57C332A controller/drive board

Imported power module 57C332A controller/drive board

Technical data of product parameters

The mechanical bias adjustment of the servo valve can affect the results of on-board 57C332A
diagnostics. A set-screw on the servo valve causes a deflection from center position
of the servo valve spool. This allows hydraulic fluid to escape the actuator, and the
valve to close at controlled rate, in the absence of an electrical signal.
For a typical hookup, a small negative voltage on the servo valve is required to 57C332A
center the spool, and hold the valve in a steady position. This voltage is typically
from -100 to -300 mV. Servo valves are delivered from the factory with this
adjustment. On board diagnostics assume that the servo valve is set up in this way.
If another setup is used, program the Ovation Controller to ignore the results of 57C332A
diagnostic bits.Calibration can be performed by using the Valve Positioner Upload/Download/
Calibrate graphic (diagram 8719) to view and modify the VP tuning constants. All
the constants can be modified. The 0% and 100% calibration values, and
demodulator gain, can be determined by the calibration sequence, and can be
adjusted by the user with this graphic.
The graphic has upload/download buttons so that the two sets of numbers can be
synchronized (made the same). This synchronization is initiated by the user and is
the responsibility of the user. In addition to the constants, there are four fields that
provide operator feedback.

Product picture display

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