Installation | 5
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• Make sure that the motor of the machine will not be affected by electric or electro-
magnetic disturbance from the mains; if necessary seek advice from Busch.
• Connect the protective earth conductor.
• Electrically connect the motor.
NOTICE
The admissible motor nominal speed exceeds the recommendation.
Risk of damage to the machine!
• Check the admissible
motor nominal speed (n
max
) on the nameplate of the machine
(NP).
• Make sure to comply with it.
to get more information.
NOTICE
Incorrect connection.
Risk of damage to the motor and temperature switches!
• The wiring diagrams given below are typical. Check the inside of the terminal box for
motor and temperature switches connection instructions/diagrams.
5.4.1 Wiring Diagram Three-Phase Motor
NOTICE
The tightening torque does not comply with the recommendation.
Risk of damage the connector threads!
• When connecting up the wires into the terminal box, make sure the tightening torque
of 3 Nm is applied and checked with a calibrated torque wrench.
NOTICE
Incorrect direction of rotation.
Risk of damage to the machine!
• 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 specific instruction label
stuck on the machine.
• Jog the motor briefly.
• With a phase rotation tester, check if the wiring corresponds to the correct direction of
rotation.
If the rotation of the motor must be changed:
• Switch any two of the motor phase wires.