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Central Braking Modules limit the DC link voltage at a central location in the drive line-up when the motors are operating in generator mode and energy recovery to the supply system is not possible. If the voltage of the DC busbar exceeds a limit value in generator operation, an externally installed braking resistor is switched in, thus restricting the voltage from increasing further. The regenerative energy is converted into heat. The braking resistor is switched in by the Braking Unit integrated in the Cabinet Module, which is equipped with state-of-the-art MOSFET/IGBT semiconductors.

Central Braking Modules are an alternative to the optional Braking Modules (options L61/L62 or L64/L65) and are particularly suitable when high braking powers are required in a drive lineup. The required braking power can also be increased by connecting units in parallel.

Central Braking Modules operate as fully stand-alone modules. They only require a connection to the DC link. An external control voltage is not required.

The built-in fan means that Central Braking Modules are also suitable for high continuous power levels.