Laser Mech FiberMINI 2.0 - 8 Troubleshooting

PLMNL0243 REV. A, Effective Date: 03/24/16 48 FiberMINI ™ 2.0 Operation Manual
8 Troubleshooting
This height sensing unit is designed for robustness and simplicity with very little adjustment. Most height sensing
problems can be attributed to electrical shorts between the tip and the body of the cutting head, or poor
connections to the tip. Basic+ HSU Utility also provides helpful diagnostic information to identify faults.
SYMPTOM
CAUSE
REMEDY
No signal present on V
HSU
Output
No Power
Check to make sure that the proper
power is applied to TB1.
Tip Shorted
The tip must be fully insulated from
ground and the body of the cutting head.
Replace the white sense cable and/or
the nozzle assembly. Check for debris
that may be causing a short.
V
HSU
Output Signal Shorted or Open
Inspect the wiring from TB2.
V
HSU
Output not indicating
proper standoff
Wrong curve is selected
There are multiple different feedback
curves that the height sensor can
produce. The default curve is a linear
output. If the tip is approximately 12mm
above a flat sheet at power-up, it will
calibrate the tip to produce a 1V/mm
output signal. The curve can be changed
using Basic+ HSU Utility.
Calibration occurs automatically at
power-up or after pressing the Reset
button. Subsequent calibrations should
occur often (every cut or cycle) to insure
consistency.
If the V
HSU
output signal is slightly off,
some correction can be made by
adjusting the standoff height when the
calibration occurs. A standoff of less
than 12mm will cause the voltage of the
V
HSU
output signal to be higher.
Conversely, a standoff of more than
12mm will cause the voltage of the V
HSU
output signal to be lower.
Calibration not occurring at proper
standoff height
Geometry of tip or part has been
altered