MTS Series 793 - Manual (Page 58)

MTS Series 793 Tuning and Calibration
How to Set Servovalve Polarity
Tuning Procedures 58
4. If necessary, clear hydraulic interlocks.
If the Hydraulic Interlock indicator is lit, determine the cause, correct it,
and then press reset. If an interlock indicator lights again, you will need to
determine the cause and correct it before proceeding.
5. Apply hydraulic pressure to the station.
6. Move the actuator.
Note The following conditions assume you want a positive command to retract
the actuator.
Standalone FlexTest SE Controllers:
A. Enable the front panel Dial.
B. Press the Status button twice to display the Status menu, and select
Setpoint. While observing the actuator, use the Dial to slowly apply a
positive Setpoint command to the actuator.
Automated Controllers:
A. Click the Manual Command button to open the Manual Command
window.
B. In the Channel selection box, select the desired control channel.
C. In the Control Mode selection box, ensure that displacement control
mode is selected.
D. Click on the Enable Manual Command check box to enable manual
command.
E. On the Station Controls panel, ensure that the Master Span is set for
100%.
F. On the Manual Command window, increase the Manual Cmd
adjustment to apply a positive command to the actuator.