2.2.7.5. Stepper Motor Phasing
A stepper motor can be run with or without an encoder.
Without an Encoder:
You do not need to phase the motor.
With an Encoder:
Because the end of travel (EOT) limit inputs are relative to motor rotation, it is
important to phase the motor.
Run a positive motion command. The motor is phased correctly if there is a positive scaling factor
(determined by the CountsPerUnit parameters) and the motor moves in a clockwise direction when
you view the motor from the front mounting flange (
). If the motor moves in a
counterclockwise direction, swap the motor leads and re-run the command. After the motor has
been phased, if you want to change the direction of positive motion, use the ReverseMotionDirection
parameter.
Figure 2-19:
Positive Motor Direction
For Aerotech-supplied systems, the motor and encoder are correctly configured and connection
adjustments are not necessary.
2.2.7. Primary Encoder Inputs
iXI4/XI4 Hardware Manual
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