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M542 Microstepping Driver Manual V1.0
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.
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.
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 per phase (or unipolar) current rating by 1.96, or the bipolar
current rating by 1.4, to determine the peak output current.
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Figure 6: 6-lead motor half coil (higher speed) connections
Figure 7: 6-lead motor full coil (higher torque) connections
Figure 8: 8-lead motor series connections
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