MTS Criterion 40 - Manual - Manual (Page 106)

MTS Criterion ® Series 40 Product Manual 106
Setting Crosshead Travel Limits
Operation
3. Set the lower limit stop at a position just below the starting position when
tension testing or just below the expected maximum crosshead travel in the
down direction when compression testing. Tighten the stop securely on the
limit rod.
Moving the crosshead
When the crosshead contacts either the upper or lower limit stop, the test stops. If
this happens, there are three ways to get the crosshead moving:
Resetting while in a limit disables the hardware interlock and allows motion.
If the hardware has failed, the crosshead could move unexpectedly.
Be aware of the crosshead position after a hardware failure,The hardware is reset
as soon as the crosshead has moved out of the limit.
• Press Motor Reset in Test MTS TestSuite TW software. Then use the
crosshead capabilities of your software (virtual handset). Move the
crosshead away from the limit until the switch closes and the crosshead can
move in both directions again. See the MTS TestSuite TW software manual
for further details.
• Manually move the adjustable limit along the range of travel away from the
crosshead until the limit switch is no longer active. Then press Interlock in
MTS TestSuite TW software or Handset Enable on the handset.
• If MTS TestSuite TW software is not active, press Handset Enable on the
handset. Then use the manual handset control to move the crosshead until
the limit switch is no longer active.
Crosshead
Limit Rod
Limit Switch Actuator
Lower Limit Stop
Upper Limit Stop
CAUTION
Criterion_product manual.book Page 106 Monday, July 28, 2014 3:52 PM