©
National Instruments Corporation
25
MID-7604/7602 Power Drive User Guide
Figure 18.
Series Stepper Motor Wiring (Higher Torque, Lower Speed)
Alternatively, you can wire 8-wire stepper motors in parallel as shown in
Figure 19. This configuration produces better high-speed performance but
requires more current to produce rated torque.
Figure 19.
Parallel Stepper Motor Wiring (Higher Speed, Lower Torque)
Notice that an 8-wire motor wired in series is virtually identical to a 6-wire
motor and typically has the same high-torque but low-speed characteristics.
While a parallel configuration is not possible with a 6-wire motor, you can
usually obtain high-speed performance with the half-coil connection shown
in Figure 20. This configuration sacrifices low-speed torque for better
high-speed performance. With this configuration, it is typically not possible
to produce the rated torque of the motor without the risk of the motor
overheating because only half of the windings are being used.
1
2
3
4
5
Phase A
Phase B
Phase B
Phase A
Ground
Motor Case Ground
Shield
Phase A
Phase A-CT
Phase A-CT
Phase A
Phase B
Phase B-CT
Phase B-CT
Phase B
1
2
3
4
5
Phase A
Phase B
Phase B
Phase A
Ground
Motor Case Ground
Shield
Phase A
Phase A-CT
Phase A-CT
Phase A
Phase B
Phase B-CT
Phase B-CT
Phase B
