MTS Series 793 - Manual (Page 57)

How to Set Servovalve Polarity
MTS Series 793 Tuning and Calibration Tuning Procedures 57
B. You need displacement control mode. If you have not created this type
of a control mode, create it now.
C. On the Station Manager Toolbar, select Tuning in the access level
box.
2. If necessary, enter an initial tuning value for P Gain (first time only).
The actuator cannot move unless an adequate P Gain value is applied. If you
already have an adequate P Gain setting for the displacement control mode,
skip this step.
Note For three-stage servovalves, the initial maximum P Gain setting is 0.8, so
enter an initial value 0.5.
Standalone FlexTest SE Controllers:
A. Select Tuning > Manual > P Gain.
B. In P Gain, enter 1.
Automated Controllers:
A. On the Station Manager Display menu, select Station Setup,
B. Ensure that the correct displacement control channel is selected in the
navigation panel.
C. Click the Channel Tuning icon to open the Tuning panel.
D. In the P Gain box, enter 1.
3. Set the polarity of the servovalve.
Standalone FlexTest SE Controllers:
Select Setup > Output > Polarity: Normal
Automated Controllers:
A. Ensure that the correct displacement control channel is selected in the
navigation panel.
B. Click the Channel Drive icon to open the Channel Drive panel, and
then click the Valve tab.
C. Select Normal (default).