Electrical Connection | 6
Instruction Manual Supplement DOLPHIN VL Systems_EN_en
17 | 36
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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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Connect the protective earth conductor.
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Electrically connect the motor.
6.2
Machine delivered with a Variable Speed Drive
(Option)
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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 in-
stallation.
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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.
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Connect the protective earth conductor.
NOTICE
Incorrect connection.
Risk of damage to the variable speed drive!
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The wiring diagrams given below are typical. Check the connection instructions/diagrams.
6.3
Wiring Diagram Three-Phase Motor
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.
NOTICE
Incorrect direction of rotation.
Risk of damage to the vacuum system!
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Operating the vacuum system with the rotation in the wrong direction can result in the operating
liquid flowing back to the vacuum system. Prior to start-up, check for 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.
