21
ST5/10-Si,-Q,-C, IP Hardware manual
920-0004 Rev. C
4/21/11
Connecting the Motor
Never connect or disconnect the motor while the power is on.
Four lead motors can only be connected one way. Please follow
the sketch at the right.
Six lead motors can be connected in series or center tap. In
series mode, motors produce more torque at low speeds, but
cannot run as fast as in the center tap configuration. In series op-
eration, the motor should be operated at 30% less than the rated
current to prevent overheating. Winding diagrams for both con-
nection methods are shown below. NC means not connected.
Eight lead motors can also be connected in two ways: series and parallel. As with six lead motors, series
operation gives you less torque at high speeds, but may result in lower motor losses and less heating. In
series operation, the motor should be operated at 30% less than the unipolar rated current. The motors
recommended in this manual should be connected in parallel. The wiring diagrams for eight lead motors are
shown on following page.
A+
A–
B+
B–
4
lead
motor
Red
Blue
Yellow
White
4 Leads
A+
A–
NC
B+
B–
NC
6
lead
motor
Red
Black
Red/
Wht
Green
Grn/Wht
White
A+
A–
NC
B+
B–
NC
6
lead
motor
Grn/Wht
White
Green
Red
Red/
Wht
Black
6 Leads Series Connected
6 Leads Center Tap Connected