Interfaces - Siemens SINAMICS S120 Device Manual

Options
8.34 L61/L62, L64/L65, braking units
The Braking Modules are installed in the air outlet channel of the Basic Line Module, Smart
Line Module, Active Line Module, or Motor Module.
During the braking process, the kinetic energy is converted into heat in the externally
mounted braking resistor.
A maximum cable length of 100 mm is permissible between the Braking Module and the
braking resistor. This allows the braking resistor to be mounted externally so that heat losses
can be released outside the converter enclosure. The braking resistor is connected directly
to the Braking Module terminals.
The application threshold of the Braking Module can be adjusted to the plant-side
requirements using a threshold switch.
Note
Higher braking powers are available on request.
8.34.2

Interfaces

Connection for the braking resistor
The connection is directly to terminal -X5.
Table 8- 52
Terminal
-X5:1
-X5:2
Recommended conductor cross-sections:
● For option L61/L64 (25 kW): #2 AWG (35 mm²)
● For option L62/L65 (50 kW): #1 AWG (50 mm²)
Note
Strain relief
For strain relief, the cables must be clamped to the cable C-type mounting bar.
462
Connection for the braking resistor
Designation
Braking resistor connection R+
Braking resistor connection R-
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A