Wiring Diagram Three-Phase Motor (Pump Drive)

The following applies to machines not equipped with an on-board variable speed drive and on which an external speed drive can be installed.

  1. Make sure that you select the proper speed drive according to the motor specifications.
  2. Connect the motor to your external speed drive according to the operating instructions of your external speed drive.
  3. Connect the motor cables as shown in the below wiring diagram.

Delta connection (low voltage):

Star connection (high voltage):

NOTICE

Incorrect direction of rotation.

Risk of damage to the machine!

  1. Operation in the wrong direction of rotation can destroy the machine in a short time! Prior to start-up, ensure that the machine is operated in the right direction.

The intended rotation direction of the motor is defined by the illustration below:

  1. Jog the motor briefly.
  2. Watch the fan wheel of the motor and determine the direction of rotation just before the fan wheel stops.

If the rotation of the motor must be changed:

  1. Switch any two of the motor phase wires.