Siemens Sinamics S120 Manual page 712

Cabinet design and EMC Booksize
12.6 Electrical connection
Connecting DC-link busbars
Always connect the lower DC-link busbars first and then the upper DC-link busbars.
Tool: Screwdriver Torx T20
Working steps:
● Loosen the DC-link busbar screws.
● Turn over the DC-link bridge.
● Screw the DC-link busbar screws tight. It is important that you follow the sequence shown
below (1 and 2).
Tightening torque: 1.8 Nm
1. Connection of the lower DC-link busbars
DC-link connections as cross-sectional drawings (view from below)
①
Standard DC-link busbar (6 mm)
②
Standard DC-link busbar (4 mm)
③
Connecting the DC-link busbar to the module using a M4x20 screw
④
Connecting the DC-link busbar to the module using a M4x16 screw
⑤
DC-link bridge
Figure 12-16 DC-link busbar connection using a standard DC-link busbar at a 50/100 mm module
712
2. Connection of the upper DC-link busbars
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
Booksize Power Units