LS User Manual 27
7.5 LIMIT STOPS
The LS machines are tted with two mechanically activated limit stops. These can be used as extra
protection to stop load cells, grips or xtures coming into contact. The upper one can be used to back
up the software limit. Activating a limit stop will result in the machine stopping.
To adjust the lower limit stop, rst loosen the lower limit stop screw and move the stop to the bot-
tom of its travel in the slot. Drive the moving crosshead to the lowest position that it may go to
safely, without damaging any tted grips or xtures. When this position has been reached, drive the
crosshead up by 3mm (0.125 inch). Move the lower adjustable limit stop up until it stops against the
crosshead actuator within the column. Tighten the screw in this position. Ensure the screws are free
to move vertically to actuate the switches.
Upper
Adjustable
Limit Stop
Lower
Adjustable
Limit Stop
To adjust the top limit stop, loosen the upper limit stop screw and move the screw to the top of its
travel and tighten the screw temporarily in this position. Drive the moving crosshead to the highest
position it may go to safely, without damaging any tted grips or xtures. When this position has
been reached, drive the crosshead down by 3mm (0.125 inch). Loosen the upper limit stop screw
and move the screw down to the limit stop cross head actuator and tighten the screw in this position.
Once again, ensure the screws are free to move vertically to actuate the switches.
LS Machine Showing Mechanical Limit Switches
Crosshead
actuator
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