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6.5.5
Connect the power cable to the motor and the supply system
When connecting the cables, observe all the conditions regarding conductor protection. Do not
exceed the permitted cable lengths between the converter output and motor. The distance
between the motor cable and the signal cable should be at least 20 cm. Do not lay grid-side and
motor supply cables in parallel to each other.
The positions of the connections are shown in the layout diagrams. Detailed wiring notes for the
converter are contained in the circuit manual of the converter.
Select the appropriate cable depending on the following conditions:
● Routing conditions
● Accumulation of cables
● Ambient temperature
● Bending radii
● Output voltage
Observe the connection capabilities on the converter and on the motor terminal box.
Procedure
1. Open the cabinet.
2. Remove or slide away the cover plate for the motor cable penetration.
Note
To route the power cables from above into the cabinet, remove the cover plate at the top of the
cabinet.
Cable fire caused by high transition resistances
Cables connected to the connection point that are not in compliance with the applicable
regulations represent a high electrical transition resistance that can cause thermal damage
(fire) during operation.
● Tighten the screws with the required torque.
SINAMICS SM150 6SL3845-2NN41-8AD2
Operating Instructions Rev.201910281310 EXAMPLE
Electrical connection
6.5 Connection
89
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