Chapter 2 Configuration and Installation
NI 7350 User Manual 2-10 ni.com
Figure 2-4. Type 2 Hall Sensor Phasing Sequence Diagram
Refer to the Measurement & Automation Explorer Help for Motion for
information about configuring the NI-Motion software for brushless servo
motors.
Connecting the Motor Leads
For the brushless motor to generate maximum torque, the motion system
must output the commutation on the three motor phases correctly. Two
ofthe phases are controlled by the NI 7350 controller, and the third phase
is generated by the drive.
The primary output of the NI 7350 wires into the primary input of the drive.
The secondary output wires into the secondary input of the drive. Use MAX
to configure the NI 7350 for onboard sinusoidal commutation. MAX
automatically assigns the primary and secondary outputs. Refer to the
Measurement & Automation Explorer Help for Motion for more
information.
When you wire the brushless motor to the drive, use the commutation
diagram for the motor as a reference. The manufacturer of the motor
typically provides this diagram with the motor documentation.
The commutation diagram shows the expected value on each of the motor
leads at each angle in the commutation phase, typically in 60-degree
increments. Table2-1 shows an example of a motor phasing commutation
diagram, and Figure 2-5 shows the corresponding graphical representation.
0°180°360°540°720°
1
2
3