Siemens SINAMICS SM150

① Contact surface
Figure 6-4 Example: Connecting the power cables
1. Clean the contact surfaces immediately before screwing the connections. Use spirit and a
lintless cloth for cleaning.
2. Apply a thin film of grease. Electrolube 2G is a suitable lubricator.
3. Screw the cable lug with a M12 screw and, if necessary, with a washer to the contact
surface. Tighten the nuts with a torque of 50 Nm.
6.5.4 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.
Electrical connection
6.5 Connection
SINAMICS SM150 6SL3845-7NN46-7AA0
114 Operating Instructions 04/2017