![]() The power unit is automatically protected and has monitoring facilities for the intermediate circuit voltage, the earth fault and motor currents. The power unit consist a transistorized three-phase bridge and converts the triggering signals coming fro the closed-loop controller to voltage pulses or feeding three-phase current (synchronous and asy nchronous) motors. Our BAUMOTRONIC BUS 3, BUS 21 and BUS 20 servo power units, which have been specially developed for servo drives are transistor converters for four quadrant operation. ![]() Baumuller Servo Drive BUS21 15/30 30 001 Converterīaumuller Servo Drive BUS21 15/30 30 001 Overview: The motor and the converter must be matched to one another able to fulfilthe requirements made of the drive system three-phase current servo motor and the converter.
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