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2.2.1. Brushless Motor Connections
The configuration shown in Figure 2-3 is an example of a typical brushless motor connection.
Figure 2-3: Brushless Motor Configuration
Table 2-7: Wire Colors for Aerotech-Supplied Brushless Motor Cables
Pin
Wire Color Set 1
(1)
Wire Color Set 2 Wire Color Set 3 Wire Color Set 4
Green/Yellow &
Shield
(2)
Green/Yellow &
Shield
Green/Yellow &
Shield
Green/Yellow &
Shield
A Black Blue & Yellow Black #1 Black & Brown
B Red Red & Orange Black #2 Red & Orange
C White White & Brown Black #3 Violet & Blue
(1) Wire Color Set #1 is the wire set typically used by Aerotech.
(2) “&” indicates two wires (Red & Orange); “ / ” indicates a single wire (Green/White).
Brushless motors are commutated electronically by the controller. The use of Hall effect devices for
commutation is recommended.
The controller requires that the Back-EMF of each motor phase be aligned with the corresponding Hall-
effect signal. To ensure proper alignment, motor, Hall, and encoder connections should be verified using
one of the following methods:
powered , through the use of a test program; or unpowered using an
oscilloscope. Both methods will identify the A, B, and C Hall/motor lead sets and indicate the correct
connections to the controller. Refer to
Section 2.2.1.1. for powered motor phasing or Section 2.2.1.2.
for unpowered motor and feedback phasing.
For Aerotech-supplied systems, the motor, encoder and Hall sensors are correctly configured and
connection adjustments are not necessary.
A motor filter module can be installed between the drive and the motor to reduce the effects on
PWM generated noise currents.
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XC2e Hardware Manual 2.2.1. Brushless Motor Connections