MTS Series 793 Controller - Manual (Page 92)

MTS Series 793 Controller Overview
Steps to Run a Test
Perform a Practice Test 92
5. Install the test specimen.
A. Select the Displacement control mode for test specimen installation.
B. Install the test specimen.
• Turn on the Manual Command control on the Station Controls panel.
• 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.
The middle waveform is
the optimum waveform. In
some cases the
waveform will have no
overshoot or ringing.
Gain (P)
Rate (D)
Low High
High