7
STRAC2 Hardware Manual
920-0118 Rev B
03/26/21
Connecting Other Motors
If you do want to connect other motors , here is some information that will help
Four lead motors can only be connected one way. Please follow the sketch at the right.
A+
A–
B+
B–
4
lead
motor
Red
Blue
Yellow
White
4 Leads
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 operation, the motor should be operated at 30% less than the rated current to prevent
overheating. Winding diagrams for both connection methods are shown below. NC means not connected.
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
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 wiring diagrams for eight lead motors without shielded cables are shown below.
A+
A–
B+
B–
8
lead
motor
8 Leads Series Connected
8 Leads Parallel Connected
A+
A–
B+
B–
8
lead
motor
Orange
Org/Wht
Blk/Wht
Black
Red Red/
Wht
Yel/
Wht
Yellow
Orange
Org/
Wht
Blk/Wht
Black
Red
Red/Wht
Yel/
Wht
Yel
low
