MTS 85X Damper - Manual (Page 43)

Perform a Practice Test
Damper System Operation 793 Controller Operation Overview 43
• Adjust Manual Command to position the actuator as required.
C. Switch to the force control mode.
6. Set test limits and actions.
From the Station Controls panel, click the Detectors icon.
Set upper and lower limits and associated actions to accommodate your test
as desired.
For instance, you may want to adjust displacement limit detectors to limit
piston rod travel. This stops the test when the specimen is on the threshold
of complete failure.
Also, you may want to adjust force limit detectors to stop the test if the
piston rod applies an excessive amount of force to the specimen. This
minimizes the chance of inadvertent damage to the load cell and specimen.
Finally, you may want to adjust error detectors to stop the test if the error
between command and feedback becomes excessive. This stops the test
when your station can no longer deliver programmed loads.
7. Set up the test monitor.
Set up the Meters and Scope as desired to monitor test signals.
8. Set up a test program.
A. From the Application control bar, select Basic TestWare.
B. In the Command tab, set the following:
Note Ensure that the Target Setpoint and Amplitude values are appropriate for
your particular specimen.
C. In the Data Acquisition tab, set the following:
Control Setting
Type Cyclic
Channel Channel 1
Control Mode Force
Target Setpoint Guideline: 25% of full scale
Amplitude Guideline: 10% of full scale
Frequency 1 Hz
Wave Shape Sine Tapered
Compensator None
Start Action Disabled
Done Action Disabled