30
Setting the Sensors - Zero, Lid and
Reference
The CSS450 shearing cell sensors are setup and
calibrated at Linkam production facility, before
shipment.
ONLY PERFORM THE FOLLOWING SET-
UP IF YOU ARE REPLACING EITHER OR
BOTH OF THE LID AND BASE SHEARING
WINDOWS (page 26 and 27).
There are three sensors, R, Z and L arranged on
top corner of the Lid. These three sensors deter-
mine when the Lid is at:
R- The Reference ‘Ref’ point (Lid shear window
is 2500mm from Base shear window).
Z- The ‘Zero’ point (Lid and Base windows
are separated by 0mm).
L- The ‘Lid’ gap just shows the Lid is in correct
range
Manually Setting the Windows to Zero Point
SWITCH OFF the CSS450 Controller and remove
the CSS450 shear cell lid. Fit the Manual Gap
Setting Tool to the shaft of the Gap Motor. This
shaft protrudes from the smaller of the two motor
covers. The tool is similar to the Lid Nuts (which
secure the Lid in place) but have two extra hex
grub screws (1) inserted in the side.
Slide the tool onto the shaft and tighten the grub
screws with the appropriate hex key to secure the
tool in place. It is now possible to easily turn the
shaft when the Lid is in place.
1
