Siemens SINAMICS S120 Equipment Manual page 413

Braking resistor connection
The connection between the braking resistor on the Braking Module and R1 / R2 must be
made by the customer.
Table 8- 35
Terminal
R1
R2
max. connectable cross section: 70 mm²
Recommended connection cross sections:
● For option L61/L64 (25 kW): 35 mm²
● For option L62/L65 (50 kW): 50 mm²
To relieve the strain on the cables from the Braking Module to the external braking resistor,
they must be propped on the cable propping bar (C-type mounting bar) above the Braking
Modules.
Thermostatic switch
Table 8- 36
Terminal
T1
T2
max. connectable cross section: 1.5 mm²
The thermostatic switch must be evaluated by the Control Unit or a higher-level controller,
and a shutdown must be carried out if necessary.
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
Connection for external braking resistor
Function
Braking resistor connection
Braking resistor connection
Thermostatic switch connection
Function
Thermostatic switch connection
Thermostatic switch connection
WARNING
8.27 L61/L62, L64/L65, braking units
Options
413