Baldor NXE100-1608Dx, Installation Manual

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Troubleshooting 6-5 MN1941
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:
H
(Local 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.
H
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.
H
Check that the maximum following error is set to a reasonable value. For configuration
purposes, following error detection may be disabled by setting
FOLERRORMODE=0 .
Motor is under control, but vibrates or overshoots during a move.
H
(Local servo outputs only) Servo loop gains may be set incorrectly. See sections 5.7.2 to
5.10.
Motor is under control, but when moved to a position and then back to the start it does not
return to the same position:
H
Verify that the NextMove e 100 and drive are correctly grounded to a common ground point.
H
(Local servo outputs only) Check:
- all encoder channels are free from electrical noise;
- they are correctly wired to the controller;
- when the motor turns, the two square wave signals are approximately 90 degrees out of
phase. Also check the complement signals.
H
Ensure that the encoder cable uses shielded twisted pair cable, with the outer shield
connected at both ends and the inner shields connected only at the NextMove
e 100 end.
H
(Local stepper outputs only) The motor is not maintaining synchronization with the
NextMove e 100 drive output signals due to excessive acceleration, speed or load demands
on the motor.
H
Check that the acceleration, speed and load are within the capabilities of the motor.
6.2.6 Mint WorkBench
The Spy window does not update:
H
The system refresh has been disabled. Go to the Tools, Options menu item, select the
System tab and then choose a System Refresh Rate (500 ms is recommended).
Firmware download fails:
H
Confirm that you have the correct version of firmware. Obtain the latest version of firmware
from www.baldormotion.com/supportme.
Cannot communicate with the controller after downloading firmware:
H
After firmware download, always power cycle the controller (remove 24 V power and then
reconnect).
Mint WorkBench loses contact with NextMove e 100 while connected using USB:
H
Check that the NextMove e 100 is powered.
H
Check that a ‘USB Motion Controller’ device is listed in Windows Device Manager. If not,
there could be a problem with the PC’s USB interface.