Connection Examples - Siemens SINAMICS S110 Manual

Risk of burns or damage resulting from high surface temperature of the braking resistor
The braking resistor can become very hot. You can be severely burnt when touching the
surface. Neighboring components can become damaged.
• Mount the braking resistor so that it cannot be touched. If this is not possible, at the
• To avoid temperature-related damage to adjacent components, follow these rules:
5.2.3

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.
SINAMICS S110
Manual, 07/2015, 6SL3097-4AC10-0BP5
CAUTION
dangerous locations, attach an appropriate warning note that is clearly visible and easy
to understand.
For PM240-2 Power Modules installed horizontally close to the ground:
– Installation on sheet steel > 2 mm
– Ensure a ventilation clearance of 250 mm at the sides of the braking resistor
– Ventilation clearance of 1000 mm above the braking resistor
For PM240-2 Power Modules when installed vertically against a wall:
– Installation on sheet steel > 2 mm
– Ensure a ventilation clearance of 100 mm at the sides of the braking resistor
– Ventilation clearance of 1000 mm above the braking resistor
DC link components
5.2 Braking resistors
111