Siemens SINAMICS S120 Manual page 95

4. Screw the motor cables onto the terminals.
Make sure that the conductors have been connected in the correct sequence (U2/T1,
V2/T2, W2/T3)!
5. Secure the motor cables on the cable propping bar to avoid placing mechanical strain on
the terminals.
6. When shielded motor cables are used, the shields must be secured to the EMC shield
bus (option M70) in an EMC-compliant manner.
Note
PE connection of the motor
The PE connection on the motor must be guided back directly to the cabinet unit and
connected there.
Connection cross-sections
Refer to the "Technical data" for the Motor Modules, Chapter "Cabinet Modules" for the
maximum connection cross-sections.
Direction of motor rotation
EN 60034-7 defines the two ends of an electric motor as follows:
● DE (Drive End): Usually the drive end of the motor
● NDE (Non-Drive End): Usually the non-drive end of the motor
An electric motor will rotate clockwise if the shaft is turning clockwise when looking at the DE
side.
For electric motors with two shaft ends, the direction of rotation must be determined based
on the shaft end specified as the drive end.
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
NOTICE
Material damage due to loose power connections
Insufficient tightening torques or vibration can result in faulty electrical connections. This
can result in damage due to fire or malfunctions.
• Tighten all power connections with the specified tightening torques, e.g. line supply
connection, motor connection, DC link connections.
• Regularly check all power connections by retightening them with the specified
tightening torque. This applies in particular after transport.
Electrical installation
4.5 Connections
93