Electrical Connection | 6
Instruction Manual PANDA WZ 0250-0500 B_EN_en
15 | 36
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Make sure that the power supply for the motor is compatible with the data on the nameplate of
the motor.
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If the machine is equipped with a power connector, install a residual current protective device to
protect persons in case of isolation default.
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Busch recommends installing a type B residual protective device suitable for the electrical
installation.
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Provide a lockable disconnect switch or an emergency stop switch on the power line so that the
machine is completely secured in case of an emergency situation.
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Provide a lockable disconnect switch on the power line so that the machine is completely secured
during maintenance tasks.
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Provide an overload protection according to EN 60204-1 for the motor.
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Busch recommends installing a D-curve circuit breaker.
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Connect the protective earth conductor.
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Electrically connect the motor.
NOTICE
Incorrect connection.
Risk of damage to the motor!
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The wiring diagrams given below are typical. Check the inside of the terminal box for motor
connection instructions/diagrams.
6.2
Wiring Diagram Three-Phase Motor
NOTICE
The tightening torque does not comply with the recommendation.
Risk of damage the connector threads!
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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!
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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.
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Jog the motor briefly.
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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:
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Switch any two of the motor phase wires.