Parameterizing Operation With Braking Resistor - Siemens SINAMICS G120P Operating Instructions Manual

Thermostatic switch
A thermostatic switch is installed to protect the braking resistor against overload. Its floating
contacts must be integrated in the fault chain on site.
Table 4- 2
Terminal
T1
T2
Max. connectable cross-section: 2.5 mm²
Integration of the thermostatic switch as release for switch-off via OFF2
The thermostatic switch must be connected to a free digital input so that the converter is
safely disconnected from the power supply if the braking resistor overheats. The digital input
of terminal strip X9/4 on the Power Module can be used for this purpose.
4.3

Parameterizing operation with braking resistor

For operation with a braking chopper, the braking power of the braking resistor must be
entered into parameter p0219. As a consequence, the Vdc max controller is automatically
deactivated (p1240 = 0) and the minimum ramp-down time (p1127) and the regenerative
power limit (p1531) are adapted.
Braking resistors
Operating Instructions, 10/2016, A5E32845373B AD
Thermostatic switch connection
Description of function
Thermostatic switch connection
Thermostatic switch connection
4.3 Parameterizing operation with braking resistor
Technical data
Voltage: 250 V AC
Load current: max. 1 A
Electrical installation
17