Electrical Connection; Connecting Dc Link Busbars - Siemens Sinamics S120 Manual

12.6

Electrical connection

12.6.1

Connecting DC link busbars

The DC-link busbars and 24 V busbars of the components must be connected in a drive line-
up before commissioning. Note the information about the arrangement of the components as
well as the current carrying capacity of the DC-link busbars in the previous sections. The
connection of components with reinforced DC-link busbars is described in Chapter
Reinforced DC-link busbars (Page 646).
Danger to life through electric shock due to incorrectly installed DC-link bridges
Incorrectly installed DC-link bridges at the left-hand end of the drive line-up can cause an
electric shock.
• For all 50 mm wide modules
• For all components that are 75 mm wide or wider, the DC-link bridges must not be
For 50 mm wide modules, the DC-link bridge cannot be swung inwards.
1)
Smart Line Modules do not have a DC-link bridge.
2)
The DC-link bridge guarantees the mechanical stability of the DC-link busbars.
3)
NOTICE
Possible damage of the devices caused by the use of unsuitable screws
Using unsuitable screws to attach the DC-link busbar for components with widths of
between 50 and 100 mm can result in damage to the devices.
• Only use the original M4x16 screws on the left-hand side of the module.
• Only use the original M4x20 screws on the right-hand side of the module.
The connection of a Line Module to a Motor Module is shown in the following.
Figure 12-15 Line Module and Motor Module as delivered
Booksize Power Units
Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
WARNING
bridge, including the screws. Do not tighten the screws without the DC-link bridges.
moved to the left or removed
(exception: Smart Line Module
1)
.
3)
Cabinet design and EMC Booksize
12.6 Electrical connection
), remove the DC-link
2)
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