Table of Contents
Advertisement
6.2.3 Motor control
Symptom
Controller appears to be
working but will not cause
motor to turn.
Motor runs uncontrollably
when controller is switched on.
Motor runs uncontrollably
when controller is switched on
and servo loop gains are
applied or when a move is set
in progress. Motor then stops
after a short time.
Motor is under control, but
vibrates or overshoots during a
move.
6-4 Troubleshooting
Check
Check that the connections between motor and drive are
correct. Use WorkBench v5 to perform the basic system
tests (see section 5.5 or 5.4).
Confirm that the drive enable output has been configured
(see section 5.3.2).
Ensure that while the NextMove ESB is not in error the
drive is enabled and working. When the NextMove ESB is
first powered up the drive should be disabled if there is no
program running (there is often an LED on the front of the
drive to indicate status).
(Servo outputs only) Check that the servo loop gains are
setup correctly - check the Fine-tuning window. See
sections 5.5.2 to 5.7.
Verify that the NextMove ESB and drive are correctly
grounded to a common ground.
(Servo outputs only) Check that the correct encoder
feedback signal is connected to the encoder input, the
encoder has power (if required, see sections 4.4.2 and
7.1.7) and is functioning correctly.
Check that the drive is connected correctly to the
NextMove ESB and that with zero demand there is 0V at
the drive's demand input. See section 5.5.1.
(Servo outputs only) Check that the encoder feedback
signal(s) are connected to the correct encoder input(s).
Check the demand to the drive is connected with the
correct polarity.
Check that for a positive demand signal, a positive
increase in axis position is seen. The ENCODERMODE
keyword can be used to change encoder input direction.
The DACMODE keyword can be used to reverse DAC
output polarity.
Check that the maximum following error is set to a
reasonable value. For setting up purposes, following error
detection may be disabled by setting FOLERRORMODE=0.
(Servo outputs only) Servo loop gains may be set
incorrectly. See sections 5.5.2 to 5.7.
www.supportme.net
MN1924
Advertisement
Table of Contents
