Parker Hannifin 88-020292-01 A manual Setting Motor Current NON-COMPUMOTOR Motors, Lead Motors

SETTING MOTOR CURRENT – NON-COMPUMOTOR MOTORS

To set motor current for a non-Compumotor motor, refer to the formulas below that correspond to your motor (4-lead, 6-lead, 8-lead) and use the current settings shown in the DIP switch table (in Chapter 2 Installation) to set the motor’s current.

WARNING

Do not connect or disconnect the motor with the power on. Doing so will damage the

contacts of the motor connector and may cause personal injury.

4-LEAD MOTORS

If you use a 4-lead motor, the manufacturer’s current specification will translate directly to the values shown for current in the DIP switch table.

6-LEAD MOTORS

Manufacturers generally use either a bipolar rating or a unipolar rating for motor current in 6-lead motors.

Bipolar Rating: If the manufacturer specifies the motor current as a bipolar rating, you can use the DIP switch table’s current settings directly to set motor current—no conversion is required.

Unipolar Rating: If the manufacturer specifies the motor current as a unipolar rating:

•Use the following formula to convert the unipolar current rating to the correct bipolar rating:

Unipolar Current ∗ 0.707 = Bipolar Current

•Use the converted value and the DIP switch table’s current settings to set the motor current.

8-LEAD MOTORS

Manufacturers generally use either a bipolar rating or a unipolar rating for motor current in 8-lead motors.

Bipolar Rating: If the manufacturer specifies the motor current as a bipolar series rating:

•If you wire the motor in series, use the DIP switch table’s current settings directly.

•If you wire the motor in parallel, you must double the manufacturer’s rating and then use the DIP switch table’s current settings to set the motor cur- rent.

Unipolar Rating: If the manufacturer specifies the motor current as a unipolar rating:

•Use the following formula to convert the unipolar current rating to the correct bipolar rating:

Unipolar Current ∗ 0.707 = Bipolar Current

•If you wire the motor in series, use the converted value and the DIP switch table’s current settings to set the motor current.

•If you wire the motor in parallel, you must double the converted value and use the DIP switch table’s current settings to set the motor current.

If you have questions about setting motor current, call Compumotor’s Applications Engineering Department at the number shown inside the front cover.

E-AC Drive Hardware Installation Guide Appendix A – Non-Compumotor Motors 39