Specifications

Southwestern Industries, Inc.
ProtoTRAK

SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
50
Possible Cause Check This
Limit switch jumpers in cable breakout
box are making poor contact.
Remove and reseat jumpers.
Limit Switches are triggered
Reset the Limit Switches using the procedures
described above.
Poor Limit Switch Cable connection Check for any pins that are loose, pushed in, or bent.
Verify that there is a good connection between the
cables on the cable breakout box.
Limit Switch failure
Try this
Switch 2 limit switch cables on the cable
breakout box.
Does the limit switch problem move to the other axis?
If it does then the switch is most likely the problem.
If it stays with the original axis then it could be the
cable breakout box.
3.4 Problem with the Measurements
3.4.1 X, Y and Z-Axis Measurements Do Not Repeat
With a dial indicator mounted to the bottom of the spindle, touch off a fixed surface
either in the X or Y-axis direction and then set the DRO equal to 0. Crank away several
inches and then touch off again at the same place. If the reading has not returned to 0
on the DRO, zero the display and repeat the procedure. If the measurement does not
repeat, you have a repeatability problem that must be resolved.
Test for accumulative error by moving the axis a number of times to see if the error
gradually grows by a small amount. If so, it may be caused by a misaligned sensor or
scale. If the error abruptly changes by a large amount, it may be caused by a bad encoder.
Expected repeatability numbers should be 0.0005” or less.
Do the following service codes and procedures:
• Code 304 Toggle X sensor/glass scale on/off
• Code 305 Toggle Y sensor/glass scale on/off
Possible Cause Check This
Machine Tool & Setup problem Check for any looseness in the setup (Tool, Tool
holder, Part, Vise, or Fixture). Make sure there is
sufficient contact between the tool holder and the
spindle. See Machine Tool & Setup Section 4.1
X and Y Gibs are loose Check the adjustment of the X and Y Gibs using the X
and Y Gib adjustment procedures.
TRAK Sensor or Glass Scale problem Make sure that the Sensor or Glass Scale is installed
correctly according to the Sensor or Glass Scale
Installation procedures. Check for any loose brackets
or misalignment etc. Also, check to make sure the
Sensor or Glass Scale assemblies are functioning
correctly. Use service codes 304 for X and 305 for Y
to turn off the suspect encoder. Does problem still
exist after turning it off?