©
National Instruments Corporation
27
nuDrive Accessory User Guide
Two-phase stepper motors come in 4-, 6-, and 8-wire variations. Figure 22
shows a 6-wire and an 8-wire stepper motor respectively. A 4-wire motor is
the same as a 6-wire motor except that the center taps (CT) are not
brought out.
Figure 22.
6-Wire and 8-Wire Stepper Motors
For maximum flexibility, you can connect 8-wire stepper motors in either a
series or parallel configuration. Connecting the windings in series as shown
in Figure 23 produces the most torque per amp, but has the disadvantage of
higher inductance and poorer high-speed performance.
Figure 23.
Series Stepper Motor Wiring (Higher Torque, Lower Speed)
Alternatively, 8-wire stepper motors can be wired in parallel as shown in
Figure 24. This configuration produces better high-speed performance but
requires more current to produce rated torque.
Phase A
Phase A-CT
Phase A-CT
Phase A
Phase B
Phase B-CT
Phase B-CT
Phase B
Phase A
Phase A-CT
Phase A-CT
Phase A
Phase B
Phase B-CT
Phase B-CT
Phase B
6-wire
8-wire
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
Summary of Contents for nuDrive 2CF-001
Page 32: ......
