6 | Electrical Connection
14 | 36
Instruction Manual R5 RU 0050-0070 B_EN_en
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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.
●
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.
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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.
NOTICE
Perform any flash test or voltage withstand test on the variable speed drive.
Risk of damage.
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Any electrical measurements required should be carried out with the variable speed drive discon-
nected.
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Do not use power cables with a length of more than 3 meters. Further be sure that the power ca-
bles and power network are equipped with a protective earth connection.
●
Mains connection of the machine is also used as a disconnection device, make sure that mains
connection is easily accessible.
In case of using a residual current protective device:
●
Use an all-current sensitive residual current protective device (type B).
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Electrically connect the machine directly to the mains connection (MC).
Connector:
EN 60320-C20
6.2
I/O and Communication Port Schematic
Connector:
D-Sub9, 9-pin, female
5 4 3
2 1
9 8 7
6
