Electrical Connection | 6
Instruction Manual R5 RA 0165-0305 D_EN_en 19 | 44
NOTICE
Incorrect connection.
Risk of damage to the motor!
● The wiring diagrams given below are typical. Check the inside of the terminal box for motor
connection instructions/diagrams.
6.3 Machine delivered with a Variable Speed Drive
(Option)
DANGER
Live wires. Carry out any work on the variable speed drive and motor.
Risk of electrical shock!
● Electrical installation work must only be executed by qualified personnel.
DANGER
Maintenance work without disconnecting the variable speed drive.
Risk of electrical shock.
● Disconnect and isolate the variable speed drive before attempting any work on it.
High voltages are present at the terminals and within the variable speed drive for up to 10
minutes after disconnection of the electrical supply.
● Always ensure by using a suitable multimeter that no voltage is present on any drive power
terminals prior to commencing any work.
● Make sure that the power supply for the drive is compatible with the data on the nameplate of
the variable speed drive.
● If the machine is equipped with a power connector, install a residual current protective device to
protect persons in case of isolation default.
● Busch recommends installing a type B residual protective device suitable for the electrical
installation.
● If the variable speed drive is not equipped with a lockable disconnect switch, provide it on the
power line so that the machine is completely secured during maintenance tasks.
● Provide an overload protection according to EN 60204-1.
● Busch recommends installing a C-curve circuit breaker.
● Connect the protective earth conductor.
● Electrically connect the Variable Speed Drive (VSD).
NOTICE
The admissible motor speed exceeds the recommendation.
Risk of damage to the machine!
● Check the admissible motor speed range, see Technical Data [➔38].
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