PowerTec 2000C Instruction Manual page 67

Page 8-4
3. Turn the current limit pot to 0% (fully counter-clockwise) and
depress the run pushbutton. The following LEDs should change state:
Current Regulator Board
enable
Speed Regulator Board
run
current limit
Current Sensor Board
Driver Board
4. Turn the speed pot (or increase the reference if a pot is not used) to
about 15% to 20%. At this point the current limit LED should illuminated.
This indicates that the speed regulator has recognized the speed reference
command but is limited to zero output by the current limit pot. The motor
should not be turning. The other LEDs should remain as they were in 2 and 3
above.
5. It is possible that the zero speed LED may be flashing on and off at
this time.
6. Slowly turn the current limit pot clockwise while observing the
motor shaft. The motor should come up to the 15% to 20% speed reference
you have selected. If the motor comes up to a speed obviously higher than the
reference and the current limit light is still on, it indicates the drive does not
recognize the feedback pulses and is trying to go to full speed. The motor
cannot actually run away unless the current limit is turned up high enough to
allow it. If this runaway problem exists, check the hall feedback wiring again
to ensure you do not have the wires to TB1-5 and TB1-6 reversed. Do not
turn it more than necessary to see the shaft move at a reasonable speed and do
not turn it more than 50% (slot vertical) without investigating further. You
should have already verified that the shaft was free to turn; therefore if the
shaft will not turn with 50% current limit, something is wrong. If current
limit is kept low, then no damage can result while troubleshooting the
problem.
7. If the shaft rocks back and forth vigorously, then either a hall effect
device or the motor leads are not connected correctly. Recheck these connec-
tions.
8. If the shaft movement is very jumpy and erratic, a loose motor wire
or hall effect wire could be the cause. Recheck these and try again.
9. If the motor turns but the current limit light does not go out,
indicating that the drive is still in current limit with the current limit pot at
50%, then a possibility exists that there is a mechanical blockage of the
motor, or that all three of the motor leads (not just two) are wired incorrectly.
Damage may result to both motor and control if current limit is turned
yellow
green
out or red
no change
either LED1 or 2 or 3 red
Model 2000C/3000C Instruction Manual