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E-AC Drive Hardware Installation Guide Chapter 2 – Installation
2 – CONNECT THE MOTOR TO THE DRIVE – WIRING
Most Compumotor motor windings—phase A and phase B—are bifilar
windings made from double-stranded copper wire. Each phase has two
half-windings, which can be wired together in series or parallel.
These two alternatives—series and parallel—produce different speed/
torque characteristics, affect the motor’s current rating, and alter the
motor’s operating temperature. They are explained below.
GROUND THE MOTOR CASE
The motor case must be grounded, for safety purposes. On pre-cabled
Compumotor motors, one end of the cable shield is permanently wired to
the motor case; you should connect the other end to on the drive’s
motor connector. Inside the drive, connects directly to the ground pin
on the AC power terminals.
PRECAUTIONS
Follow these precautions when you wire the motor connector.
1. Turn off power to the drive before connecting or disconnecting the motor
leads.
2. Verify that no wire whiskers short out motor connections.
3. Do not apply power to the drive when the motor is not connected.
4. Never connect anything other than the motor to the motor terminals.
5. After wiring the motor connector, perform the Automatic Test, to verify that
the connector is wired correctly.

CONNECTING THE MOTOR: SERIES WIRING

For series motor current, connect a Compumotor motor as shown in the
following diagram.
A +
A -
B +
B -
Compumotor Motor
Shield is internally connected
to the motor’s case
PM
Phase A
Windings
Phase B
Windings
Shield
Red
Black
White
Green
Orange
Brown
Yellow
Blue
OS Motors;
VS Motors
(with cable):
Red
Yellow
Orange
Black
Orange/White
Black/White
Red/White
Yellow/White
VS Motors
(flying lead):

Motor Connector – Wired for SERIES Motor Current

Be sure to insulate the center tap connections; these are the wires shown
joined together in the drawing above, but not connected to the drive.
The operating temperature of a motor connected in series will be lower
than that of a motor connected in parallel. Therefore, you should operate
your motor in series, if your application permits. Typically, series connec-
tions work well in high torque/low speed applications.