MTS Criterion Series 40 - Manual (Page 50)

3. The MTS Insight controller generates this command and sends it to the crosshead drive motor, which
moves the crosshead.
4. The load frame-mounted sensors send back a signal indicating the new position.
5. The encoder senses the amount of extension and sends this feedback to the digital controller, where
it is compared with your command.
The system automatically repeats Steps 2 through 5 until the desired command is achieved. The digital
controller continues to generate commands to the crosshead drive motor to maintain the commanded
force on the specimen.
Setting Travel Stops to Protect Yourself and
Your Equipment
Your MTS Criterion Series 40 load frame comes equipped with mechanical travel stops. These stops
should be set to trip the interlock if the crosshead moves beyond the expected travel zone. MTS recommends
using the travel stops constantly to prevent damage to equipment or injury to personnel. Set the travel
limits to just outside the expected travel area.
Note: The travel stops should not be used to routinely stop test runs. The travel limit stops are
designed only to stop unexpected crosshead movement.
To set the travel stops:
1. Identify the expected lower range of travel.
2. Loosen the lower travel stop by turning it counterclockwise.
3. Move to a point just outside the expected range of travel.
4. Tighten by turning it clockwise.
5. Repeat the above steps for the upper travel stop.
50 | MTS Criterion ™ Series 40
Key Concepts