25
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P a r a l l e l C o n n e c t i o n
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.
Figure 1.6.3: 8 Lead Parallel Motor Configuration
6 L e a d M o t o r s
As with 8 lead stepping motors, 6 lead motors have two configurations
available for high speed or high torque operation. The higher speed configura-
tion, 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 motor phase
windings. This gives lower inductance, hence, lower torque output. As with
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
.
Figure 1.6.4: 6 Lead Half Coil (Higher Speed) Motor Configuration
PHASE A
PHASE A
PHASE A
PHASE A
PHASE B
PHASE B
PHASE B
PHASE B
PHASE B
PHASE B
PHASE B
PHASE B
NO CONNECTION
PHASE A
PHASE A
PHASE A
PHASE A
NO CONNECTION
