Connecting The Motor And Power Cables - Siemens SINAMICS S150 Operating Instructions Manual

4.6.2

Connecting the motor and power cables

Connecting the motor and power cables on the cabinet unit
Note
The location of the connections is indicated in the layout diagrams provided in section 3.
1. Open the cabinet, remove the covers (if necessary) in front of the connection panel for
2. Move or remove the bottom plate below the connection panel in order to feed through the
3. Screw the protective earth (PE) into the appropriate terminal (with earth symbol) (50 Nm
4. Connect the motor and power cables to the terminals.
Direction of motor rotation
With induction machines with a clockwise phase sequence (looking at the drive shaft), the
motor must be connected to the cabinet unit as follows.
Table 4-3
In contrast to the connection for the clockwise phase sequence, two phases have to be
reversed with a counter-clockwise phase sequence (looking at the drive shaft).
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
motor cables (terminals U2/T1, V2/T2, W2/T3; X2) and power cables (terminals U1/L1,
V1/L2, W1/L3; X1).
motor and power cables.
for M12) at the points provided in the cabinet.
Make sure that you connect the conductors in the correct sequence: U2/T1, V2/T2,
W2/T3 and U1/L1, V1/L2, W1/L3.
CAUTION
Tighten the screws with the appropriate torque (50 Nm for M12), otherwise the terminal
contacts could be destroyed by burning during operation.
Note
The motor ground must be fed back directly to the cabinet unit and connected.
Cabinet unit and motor connection terminals
Cabinet unit (connection terminals)
U2/T1
V2/T2
W2/T3
Electrical installation
4.6 Power connections
Motor (connection terminals)
U
V
W
53