MTS Landmark TWX - Manual (Page 110)

Note: The actuator may retract on its own when the HSM turns off due to the interlock condition
caused by exceeding the displacement limit.
a) In the Station Manager main window, click the Manual Command button to open the Manual
Command window.
b) Select the following parameters:
• Channel: Ch1 (or other depending on your configuration)
• Control Mode: Displacement
• Enable Manual Command: Checked
c) Using the slider control, slowly retract the actuator until you have enough clearance to remove the
specimen halves.
3. Ensure that the HSM is off.
The HSM should have turned off when the displacement limit was exceeded. However, make sure that
the HSM is off before nearing the crush zone.
4. Release the grip and remove the specimen half from each grip.
Using a tool that keeps your hands clear of the actuator, grasp the specimen half in the upper grip and
release the grip. Repeat the procedure for the lower grip. That completes this Example test.
Recover from a Tripped Limit
Recovering from a tripped limit may consist of one of the following steps:
a) If Necessary, Recover from a Tripped Force Limit (p. 110)
b) If Necessary, Recover from a Tripped Displacement Limit (p. 113)
If Necessary, Recover from a Tripped Force Limit
There are a number of possible causes for a tripped force limit. For example:
110 | MTS Landmark Test System Operation
Running the Example Tension Test