sinamics

06/05 Electrical Installation
6-pulse infeed -> open the disconnect switch
For 6-pulse infeeds, disconnect switches –Q98 and –Q99 must be opened and it is
not permissible that the DC links are connected with one another; this is the
condition with the equipped is shipped.
12-pulse infeed -> close the disconnect switches
For 12-pulse infeeds, the disconnect switches –Q98 and –Q99 must be closed; the
DC links must be connected with one another.
4.7.3 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 3.
1. Open the cabinet, remove the covers (if necessary) in front of the connection
panel for motor cables (terminals U2/T1, V2/T2, W2/T3; X2) and power cables
(terminals U1/L1, V1/L2, W1/L3; X1).
2. Move or remove the bottom plate below the connection panel through which the
motor cables are fed.
3. Screw the protective earth (PE) into the appropriate terminal (with earth symbol)
(50 Nm with M12) at the points provided in the cabinet.
NOTE
With version C, connect the power cables first and then the motor cables.
4. Screw the motor cables onto the terminals.
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 with M12), otherwise the
terminal contacts could catch fire during operation.
NOTE
The motor ground must be fed back directly to the cabinet unit and connected.
SINAMICS G150
Operating Instructions 4-15