MD24 / MD28
– Hardware Description
7
8 Connecting the Motor (P2)
The ME542 driver can drive any 2-pahse and 4-pahse hybrid stepping motors.
8.1 Connections to 4-lead Motors
4 lead motors are the least flexible but easiest to wire. Speed and torque will depend on
winding inductance. In setting the driver output current, multiply the specified phase
current by 1.4 to determine the peak output current.
4-lead Motor Connections
8.2 Connections to 6-lead Motors
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.
8.2.1
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 driver output current multiply the specified
per phase (or unipolar) current rating by 1.4 to determine the peak output current.
6-lead motor half coil (higher speed) connections
