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MID-7604/7602 Power Drive 26 ni.com
Notice that an 8-wire motor wired in series is virtually identical to a 6-wire
motor and typically has thesame high-torque butlow-speed characteristics.
While a parallel configuration is not possible with a 6-wire motor, you can
usually obtain high-speed performance with the half-coilconnection shown
in Figure 20. This configuration sacrifices low-speed torque for better
high-speed performance. Withthis 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.
Figure 20. Half-Coil Stepper Motor Wiring
Figure21showsthewiringforatypical4-wiremotor.
Figure 21. 4-Wire Motor Wiring
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
Motor Case Ground
Shield
Phase A
Phase A
Phase B
Phase B
Phase A
Phase B
Phase B
Phase A
Ground