Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 310)

12-28 Troubleshooting
Miscellaneous Troubleshooting
Procedures If you are having problems with how your 1336 IMPACT drive is
operating, refer to this table for possible solutions before calling for
help.
The motor does not turn
during the phase rotation
test.
Remove the load from the motor and try running the
auto-tune tests again. Afterwards, you will need to
attach the load again and run the inertia test manually.
Refer to Chapter 13, Understanding the Auto-tuning
Procedure, for additional information.
During the phase rotation
test you were asked to
swap the encoder leads.
You changed the leads and
ran start up again. You
were asked to swap the
leads again.
The drive is not getting any speed feedback information.
You need to:
• Check the connection between the encoder and the
motor.
• Run the phase rotation test again and escape out to
the status display at the first question. Check the
motor speed. It should ramp to 3 Hz (90 rpm) for a 60
Hz 4 pole motor. If the motor speed is 0 rpm, you
should:
– Check the encoder wiring.
– Check the encoder itself.
The drive completes the
auto-tune tests but you
want a better response. Adjust Accel Time 1 (parameter 42) and Decel Time 1
(parameter 44) before you change the values of any of
the bandwidth, Ki, or Kp parameters.
If: Then:
If: Then you should:
The drive does not
respond to start or jog
commands.
• Make sure the power is applied.
• Check if the port is enabled in SP Enable Mask
(parameter 124).
• Check if start is enabled in Start/Jog Mask
(parameter 126).
• Check if Start/Stop Owner (parameter 129) and
Jog1/Jog2 Owner (parameter 130) are both 0. If not,
open start and/or jog inputs and close stop inputs.
• Check if the drive is faulted.
• Check Run Inhibit Sts (parameter 16) for possible cause.
You cannot clear faults.
• Check if the port is enabled in SP Enable Mask
(parameter 124).
• Check if clear faults is enabled in Clr Flt/Res Mask
(parameter 127).
• Check if clear fault owners in Ramp/ClFlt Owner
(parameter 131) is set. If set, check stop owners in
Start/Stop Owner (parameter 129) and remove stop
conditions.
• The fault is a hard fault which requires a power cycle or
drive reset.
The motor does not turn
or run at the correct
speed.
• Check which speed reference the drive is following in
Drive/Inv Status (parameter 21) bits 13 – 15.
• Check if Spd/Trq Mode Sel (parameter 68) is set
correctly.
• Check if Spd Desired BW (parameter 161) is non-zero.
• Set the drive defaults and run start up again to tune the
drive.
• If drive is in encoderless w/deadband mode, check to
see if reference is less than 1Hz.