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XYZ Machine Tools
ProTURN SLX 1630 ProtoTRAK SLX CNC Safety, Installation, Service & Parts List Manual
Potential Problem:
Check By:
Bad ball screw
Visual inspection of the ball nut - if the nylon seal is broken or deformed, if
contamination has visibly entered the ball nut or if balls are out of the ball nut,
replace the ball screw.
Cranking the ball screw through a significant part of its travel. If it jams, feel loose or
has rough spots, replace the ball screw.
Dial indicator movement when indicating on the end of the ballscrew indicates
backlash between the ball screw and ball nut.
Ball nut not
tightened to the
yoke
Inspection for space between the head of the bolt and the ball nut i.e. the retaining
bolt has bottomed out in its thread and is not securing the ball nut to the yoke
properly.
Yoke loose in the
carriage
Inspection for any motion of the yoke or looseness in the Yoke mounting screws.
Oil lines sheared
Visual inspection.
Oil line blockage
Pump the oil and ensure that it flows evenly to the ways, ball screws and cross-slide.
Z Ball screws not
aligned properly
Manually turn the ball screw through the length of its travel. Pay particular attention
to the movement near the headstock, the middle and the tailstock.
NOTE: Ball screws are inspected throughout their entire travel for backlash and consistent torque. A
ball screw should be good for millions of mm of travel if installed properly. Do not be too quick to
replace a ball screw if there is insufficient indication that it is bad; this will just be a costly delay to
resolving the real problem.
See:
Z Ball Screw Removal,
Section 5.1.13
X Ball Screw Removal, Section 5.1.11
Aligning Z Ball Screw, Section 5.1.14
4.3 Computer/Pendant Diagnostics
The pendant consists of 2 separate modules: the computer module and the pendant
enclosure minus the computer module.
In general, the pendant/computer module is best diagnosed by eliminating all other
possible alternatives. The following table lists some problems and what these
problems can lead to.
Possible problems
Can lead to
Poor cable connections
There are 6 cable connections to the left side of the pendant. Make
sure all cables are properly fastened.
Pendant locks up
Press the E-stop button and see if lock up clears if not then do the
following:
Turn the pendant off, wait at least 30 seconds, and turn it back on and
check to see if the malfunction has been reset.
No voltage to RSG port
RSG will not work – should be 5 DC volts present
Check with a voltmeter.
Low voltage to flash drive or
slave board.
Can cause the system to lock up and the flash drive to act abnormally.
Check voltage to the RSG port with a voltmeter. It should be 4.8 DC
volts and above. Lower values than this can cause problems.
Flash disk failure
If the flash disk fails, the system will not boot up or operate. It will
need to be replaced. All programs and machine configurations will be
lost.
Make sure to back up your flash drive from time to time.
Only the flash disk module will need to be replaced.
Floppy disk failure
Will not allow user to save or pull up programs from a floppy disk. Can
the floppy drive format a disk? See Section 4.3.
