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DM860I Full Digital Stepper Drive Manual
Figure 6: 6-lead motor half coil (higher speed) connections
Full Coil Configurations
The full coil configuration on a six lead motor should be used in applications where higher torque at lower speeds is
desired. This configuration is also referred to as full copper. In full coil mode, the motors should be run at only 70% of
their rated current to prevent over heating.
Figure 7: 6-lead motor full coil (higher torque) connections
Connections to 8-lead Motors
8 lead motors offer a high degree of flexibility to the system designer in that they may be connected in series or parallel,
thus satisfying a wide range of applications.
Series Connections
A series motor configuration would typically be used in applications where a higher torque at lower speeds is required.
Because this configuration has the most inductance, the performance will start to degrade at higher speeds. In series
mode, the motors should also be run at only 70% of their rated current to prevent over heating.
Figure 8: 8-lead motor series connections
Parallel Connections
An 8 lead motor in a parallel configuration offers a more stable, but lower torque at lower speeds. But because of the
lower inductance, there will be higher torque at higher speeds. Multiply the per phase (or unipolar) current rating by
1.96, or the bipolar current rating by 1.4, to determine the peak output current.
Figure 9: 8-lead motor parallel connections
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