Siemens SINAMICS S120 Manual page 211

The fan is switched on and off by means of a temperature control, which prevents it from
running unnecessarily.
The fan can start up on its own.
The Braking Module incorporated into the Central Braking Module is able to support a
higher braking power than standard braking resistors.
The braking resistor is only designed for occasional regenerative operation in accordance
with the specified duty cycles.
If the braking resistor does not meet your particular requirements, an appropriate braking
resistor must be requested on an order-specific basis.
Central Braking Modules are available for the following voltages and power ratings:
Line voltage
3 AC 380 ... 480 V
500 to 600 V AC, 3-phase
660 to 690 V AC, 3-phase
The braking power can be increased by connecting Central Braking Modules in parallel.
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A
WARNING
WARNING
5.7 Central Braking Modules
Rated power
500/1000 kW
550/1100 kW
630/1200 kW
Cabinet Modules
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