6.6
Electrical connection
6.6.1
Releasing the DC link protective cover
The protective covers for the DC link on the SINAMICS S120 components have an
interlocking mechanism, which must be opened using a flat bladed screwdriver (1 x 5.5 mm).
This interlocking mechanism is identical for the power units of all series.
Table 6- 3
Opening the protective cover for the DC link using a screwdriver
1. Protective cover with interlocking
mechanism
To lock, press the protective cover back on until you hear the interlock engage.
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0
2. To open the protective cover, use a
screwdriver to slightly turn the interlock-
ing screw in the direction of the arrow
(counter-clockwise)
Cabinet design
6.6 Electrical connection
3. Opened protective cover
105