Dc Brush Motor Connections; Dc Brush Motor Phasing; Figure 2-8: Dc Brush Motor Configuration; Figure 2-9: Positive Motor Direction - Aerotech XR3 Hardware Manual

Chapter 2: Installation and Configuration
2.3.2. DC Brush Motor Connections
The configuration shown in
Section 2.3.2.1. for information on motor phasing.

2.3.2.1. DC Brush Motor Phasing

A properly phased motor means that the positive motor lead should be connected to the ØA motor terminal
and the negative motor lead should be connected to the ØC motor terminal. To determine if the motor is
properly phased, connect a voltmeter to the motor leads of an un-powered motor:
1. Connect the positive lead of the voltmeter to the one of the motor terminals.
2. Connect the negative lead of the voltmeter to the other motor terminal.
3. Move or rotate the motor in the positive or clockwise (CW) direction by hand.
4. If the voltmeter indicates a negative value, swap the motor leads and move the motor by hand in the
positive direction, again. When the voltmeter indicates a positive value, the motor leads have been
identified.
5. Connect the motor lead from the positive lead of the voltmeter to the ØA motor terminal on the XR3.
Connect the motor lead from the negative lead of the voltmeter to the ØC motor terminal on the XR3.
For Aerotech-supplied systems, the motor, encoder and Hall sensors are correctly configured and
connection adjustments are not necessary.
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Figure 2-8 is an example of a typical DC brush motor connection. Refer to
Figure 2-8: DC Brush Motor Configuration
Figure 2-9: Positive Motor Direction
XR3 Hardware Manual
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