Brushless Motor Unpowered Motor And Feedback Phasing; Figure 2-13: Brushless Motor Phasing Oscilloscope Example; Figure 2-14: Brushless Motor Phasing Goal - Advantech Automation1 XC4 Hardware Manual

XC4 Hardware Manual

2.2.1.2. Brushless Motor Unpowered Motor and Feedback Phasing

Disconnect the motor from the controller and connect the motor in the test configuration shown in
Figure 2-13. This method will require a two-channel oscilloscope, a 5V power supply, and six resistors
(10,000 ohm, 1/4 watt). All measurements should be made with the probe common of each channel of
the oscilloscope connected to a neutral reference test point (TP4, shown in
shown while moving the motor in the positive direction.
With the designations of the motor and Hall leads of a third party motor determined, the motor can now
be connected to an Aerotech system. Connect motor lead A to motor connector A, motor lead B to
motor connector B, and motor lead C to motor connector C. Hall leads should also be connected to their
respective feedback connector pins (Hall A lead to the Hall A feedback pin, Hall B to Hall B, and Hall C to
Hall C). The motor is correctly phased when the Hall states align with the Back EMF as shown in
14). Use the CommutationOffset parameter to correct for Hall signal misalignment.
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Figure 2-13: Brushless Motor Phasing Oscilloscope Example
Figure 2-14:
2.2.1. Brushless Motor Connections
Brushless Motor Phasing Goal
Figure 2-13). Wave forms are
(Figure 2-
41