Setting The Limit Stops - Macmesin MultiTest–xt Assembly And Installation Manual

With the Quick-interchange system, the grip is attached to a mounting using an 8 mm
diameter pin. The grip can be fitted and removed without the need for additional tools.
Be sure to fit the locking spring to secure the accessory in place.
Take extra care when fitting or removing heavy grips to the underside of the loadcell.
Support the accessory while the securing device is removed so that it does not fall. Before
fitting a sample, check that both grips and plates are secure.

3.8 Setting the limit stops

Limit stops are provided to prevent damage to the loadcell and grips. A dual safety
system provides protection with the first stage being software controlled, followed, if
necessary, by a second hardware limit that removes power from the motor. Upper and
lower limit stops can be set to restrict movement of the crosshead. If the crosshead
reaches a limit during a test, it will stop then reverse direction for approximately 5 mm,
then stop again. A warning message is displayed on the touch screen:
Press to acknowledge the warning and use the Jog buttons to move the crosshead so
OK
that you can then check the position of the limit stops and re-set if required.
If a limit stop is reached while pressing one of the Jog buttons on the front panel of the
MultiTest-i, a different warning message is displayed.
Pressing will allow you to correct the situation and continue.
OK
Pressing will disconnect the stand from the console, and display the following
Abort
message:
Press then to go to the Front Screen, this will reconnect the stand again.
OK Exit
Limit stops should be adjusted after grips or holding accessories have been fitted so that
the limit positions will prevent unwanted contact between moving and static parts. To set
either limit stop, slacken the knurled knob by turning it anti-clockwise, then slide the stop
to the desired position and re-tighten the knob again.
Mecmesin  9
Assembly and Installation of –xt System Test Stands