Connecting The Motor; 4-Lead Motors Connections; Half Coil Configurations - Motion DMD870 User Manual

DMD870 Digital Stepper Drive User's Manual

5. CONNECTING THE MOTOR

The DMD870 can drive any 2-pahse and 4-pahse hybrid stepping motors.

4-lead Motors Connections

4 lead motors are the least flexible but easiest to wire. Speed and torque will depend on
winding inductance. In setting the Drive output current, multiply the specified phase
current by 1.4 to determine the peak output current.
Figure 3: 4-lead Motor Connections
6-lead Motors Connections
Like 8-lead stepping motors, 6 lead motors have two configurations available for high speed
or high torque operation. The higher speed configuration, or half coil, is so described
because it uses one half of the motor's inductor windings. The higher torque configuration,
or full coil, uses the full windings of the phases.

Half Coil Configurations

As previously stated, the half coil configuration uses 50% of the motor phase windings. This
gives lower inductance, hence, lower torque output. Like the parallel connection of 8 lead
motor, the torque output will be more stable at higher speeds. This configuration is also
referred to as half chopper. In setting the Drive output current multiply the specified per
phase (or unipolar) current rating by 1.4 to determine the peak output current.
Figure 4: 6-lead motor half coil (higher speed) connections
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