Connection Examples - Siemens SINAMICS S120 Equipment Manual
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6.1.1.3
Connection examples
The braking resistor is connected directly on the Power Module at the terminals R1 and R2.
The braking resistor must be protected against overheating. This protection function
performs the function of a thermostatic switch. The thermostatic switch is included in the
scope of supply of the braking resistor. Evaluate the braking resistor temperature monitoring
so that the motor is switched off when the resistor is in an overtemperature condition.
Connect the thermostatic switch to a Control Unit
Connect the thermostatic switch to a free digital input of the Control Unit. Set the function of
this digital input to the OFF2 command. If the braking resistor overheats, the Power Module
is disconnected from the power supply.
Figure 6-1
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
Connecting the thermostatic switch on the braking resistor to a Control Unit
DC link components
6.1 Blocksize
161
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