National Instruments NI 7350 - page 24

Chapter 2 Configuration and Installation
© National Instruments Corporation 2-11 NI 7350 User Manual
Figure 2-5. Sine Wave Motor Phasing Diagram
Table2-2 shows the correct method of wiring a brushless m otor to
the drive.
For example, if the motor has the phasing characteristics described in
Table2-1, wire the motor lead C to the motor output 1 on the drive. You
wire the lead this way because the motor lead C calls for No Current at
0ºC ommutation Phase, and drive motor output1 matches the No Current
requirement. Similarly, wire motor lead A to motor output 2 and motor
lead B to motor output 3 on the drive.
Table 2-1. Motor Phasing Diagram
Motor
Lead 0º 60º 120º 180º 240º 300º
A + + NC – – NC
B – NC + + NC –
CNC – – NC + +
Table 2-2. Correct Wiring Diagram At 0º Commutation Phase
Drive Motor Output Brushless Motor Lead State
1No Current (NC)
2Positive Current
3Negative Current
0°60°300°240°180°120°
A
C
B–
+
NC