Parker Hannifin 88-020292-01 A Connect the Motor to the Drive -WIRING, Ground the Motor Case

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.

Compumotor Motor

	OS Motors;
VS Motors	VS Motors
(flying lead):	(with cable):
Red/White	Yellow
Yellow/White	Blue

	Phase A
	Windings	Red	A +
	Red
	Yellow	Black	A -
	PM	White	B +
Phase B	Orange
			B -
Windings	Black	Green

Orange/White Orange

Black/White Brown

Shield

Shield is internally connected to the motor’s case

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.

18 E-AC Drive Hardware Installation Guide Chapter 2 – Installation