Chapter 2 – Installation
13
Step 1 – Connecting the Motor
The Gemini drive is compatible with 4, 6, or 8 lead step motors designed for use
with a bipolar drive.
Connecting the Motor
Make sure power is off before you connect the motor.
1.
Wire your motor in series or parallel.
For wiring diagrams, color codes, dimensions and speed/torque curves for
Compumotor motors, consult the separate
Gemini Motor Reference Manual.
If you use a non-Compumotor motor, see
Appendix B Using Non-Compumotor
Motors for instructions on preparing your motor for connection to the Gemini drive.
2.
Prepare four motor phase wires to connect to the Gemini drive, and identify them as
A+, A-, B+, and B-.
3.
Remove the clear plastic cover from the drive terminals. Connect the motor cable’s
earth wire to the drive terminal with the
symbol. This connects the motor’s
protective conductor terminal to the drive’s safety earth.
4.
Connect your motor cable’s phase wires (A+, A-, B+, B-) to the drive’s A+, A-, B+,
B- terminals, respectively, as shown in the drawing below.
WARNING
The drive’s barrier strip terminals are at hazardous voltages when power is
applied to the drive, and up to 30 seconds after power is removed.
Reinstall the clear plastic terminal cover after you make connections.
5.
Secure the motor cable to the drive by placing the exposed cable shield in the
saddle clamp on the bottom of the drive. Make the loop of cable between the saddle
clamp and the drive terminals as short as possible.
6.
Clamp the motor securely in place during this
Express Setup procedure, if your
motor is not permanently mounted.
The next drawing illustrates these connections.
A+
A–
B+
B–
Motor Cable
DRIVE
TERMINALS
A+
A–
B+
B–
Earth
MOTOR
WIRES
Motor
Cable
Place exposed braid in
saddle clamp on bottom
of drive. Make loop as short
as possible.
Drive terminals: #8 (M4).
Mating terminals: spade fork, 0.325"
maximum width.
Motor
Motor Wiring – Typical
