30 IM805 Operating Instructions Revision R032306
31
IM805 Operating Instructions Revision R032306
6 L e a d M o t o r s
Like 8 lead stepping motors, 6 lead motors have two configurations avail-
able for high speed or high torque operation. The higher speed configu-
ration, 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.
H a l f C o i l C o n f i g u r a t i o n
As previously stated, the half coil configuration uses 50% of the mo-
tor 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 copper
. In setting the driver output current multiply the speci-
fied per phase (or unipolar) current rating by 1.4 to determine the peak
output current.
F u l l C o i l C o n f i g u r a t i o n
The full coil configuration on a six lead motor should be used in applica-
tions where higher torque at lower speeds is desired. This configuration
is also referred to as
full copper.
Use the per phase (or unipolar) current
rating as the peak output current.
Figure 6.5: 6 Lead Full Coil (Higher Torque) Motor Connections
Figure 6.4: 6 Lead Half Coil (Higher Speed) Motor Connections
PHASE A
NO CONNECTION
NO CONNECTION
PHASE A
PHASE B
PHASE B
PHASE A
NO CONNECTION
NO CONNECTION
PHASE A
PHASE B
PHASE B
