MTS Series 793 - Manual (Page 94)

MTS Series 793 Tuning and Calibration
How to Perform Advanced Tuning Techniques
Tuning Procedures 94
Procedure 1. Remove hydraulic pressure from the main spool.
2. Disconnect the hydraulic service manifold (HSM) control cable from the
controller.
TestStar IIm, FlexTest GT, and FlexTest SE Controllers—At the back of the
controller chassis, disconnect the cable from connector J28.
FlexTest IIm/CTC Controllers—At the 497.05 Hydraulic Control module’s
rear panel, disconnect the cable from connector J28.
Disconnecting this cable disables pressure to the main spool, but leaves
pressure applied to the pilot stage of the servovalve.
On systems with multiple HSMs, be sure to disconnect the correct cables.
Note On systems with no HSM, remove the outer loop LVDT cable from the
actuator to disable the outer loop.
3. Apply hydraulic pressure.
4. Select an access level of Tuning.
Standalone FlexTest SE Controllers: Config > Access Level > Tuning
Automated Controllers: In the Station Manager window’s toolbar, select
an access level of Tuning.
5. Set the following valve drive conditioner parameters:
Standalone FlexTest SE Controllers: Setup > Output > Conditioner
Automated Controllers: In the Station Setup window, click to
display the Drive panel. In the Drive panel, click the Conditioner tab.
A. Set Excitation to 10V.
B. Set Phase to between 10 and 30 deg.
C. Set Offset to 0 V.
D. Set the Gain to 10.
E. Set the Polarity to Normal.
6. Configure a Meter to monitor the spool position signal.
Standalone FlexTest SE Controllers:
Select Meters > Meter 1