Rockwell Automation LZ Series Linear Motors - Manual (Page 27)

Publication LZ-UM001A-EN-P - January 2008
Troubleshooting 27
5. Using an oscilloscope, connect one channel between any Hall signal
(output) and the Hall signal common.
6. Slowly and steadily move the motor by hand in one direction over the
whole travel. Monitor the waveshape as you are doing this.
The Hall signal should alternate between a high and low DC level of
equal duty cycle (squarewave), as the Hall module passes over the
alternating polarity magnets. Especially at the magnet channel joints,
ensure the squarewave shape is consistent. Any changes or irregularities
in the squarewave duty cycle shape may indicate a magnet polarity
problem. Note which magnet channel where the problem occurs. If a
problem is suspected, first check to see if the channel alignment tool
holes are all on the same side. If correct, contact Anorad Technical
Support for further advice.