DC link components
5.2 Braking resistors
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
115
The braking resistor for all modules is connected at terminals R1 and R2. Since it generates
heat, it should be mounted to the side of the Power Modules.
The braking resistors for the Power Modules of the FSD to FSE frame sizes should be
located outside the cabinet or the switchgear room to take the resulting heat loss away from
the Power Modules, This reduces the level of air conditioning required.
The braking resistors can be installed horizontally or vertically. The power connections on
vertically installed resistors must be below.
Table 5- 3 Connecting the braking resistors for PM240-2 Power Modules on the mounting surface
4 x M4 screws
4 x M4 nuts
Tightening torque: 2.5 Nm
FSB
FSC 4 x M5 screws
4 x M5 nuts
Tightening torque: 2.5 Nm
Note
PE connection
The PE connection for the braking resistor is establish
ed via the shield connection for frame
For installation according to EN 60204
-1 and EN 61800-5-1, the PE connection on the
housing must be used. The PE conductor in the pigtail is, in this case, not to be used, but
can be suitably tied of
f or cut off.
For frame sizes FSD and FSE, PE connection of the braking resistor is achieved via the
shield connection plate above terminals R1 and R2.
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