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Chapter 2
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2.3.3.1. Stepper Motor Phasing
A stepper motor can be run with or without an encoder. If an encoder is not being used, phasing is not
necessary. With an encoder, test for proper motor phasing by running a positive motion command.
If there is a positive scaling factor (determined by the CountsPerUnit parameters) and the motor moves in a
clockwise direction, as viewed looking at the motor from the front mounting flange, the motor is phased
correctly. If the motor moves in a counterclockwise direction, swap the motor leads and re-run the
command.
Proper motor phasing is important because the end of travel (EOT) limit inputs are relative to motor rotation.
Figure 2-17:
Clockwise Motor Rotation
N O T E :
If using standard Aerotech motors and cables, motor and encoder connection adjustments are
not required.
N O T E :
After the motor has been phased, use the ReverseMotionDirection parameter to change the dir-
ection of “positive” motion.
Ndrive HPe 10/20/30
Installation and Configuration
Содержание Ndrive HPe 10
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