Minarik DIGI-LOK DLC300, User Manual, Page: 41 / 44

31 Troubleshooting
3. The clamping resistor on the DLC may be dragging the output
if the control already has its own circuit with a clamping resistor
between the wiper and CCW terminals. Remove the connection
between DLC terminal S1 and the CCW terminal on the speed
control.
4. Confirm that the pickup sensing tip is directly over the center
of the gear teeth and is no farther than 0.010" above the teeth.
Extensive shaft runout is the most common cause of this type of
problem.
5. Check continuity and shielding of pickup leads. Electrical noise
can cause the DLC to attempt corrections that are not justified.
6. Rapid shifts in load may be pulling the motor out of its set
speed. Consider the use of a regenerative drive with the DLC.
7. The IR COMP (regulation) setting on the drive may be above
zero. Set IR COMP (regulation) to zero (full CCW).
If motor runs at top speed regardless of the set
speed:
1. There may be an electromechanical defect in the pickup, a
break in the pickup leads, or in the leads from any sensor. Also,
check the alignment of the pickup over the gear. Without accurate
feedback information fed to the DLC, the system cannot be
expected to operate correctly.
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