KDS1.1-50-300-W1/220 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDS1.1-50-300-W1/220 is a servo drive module from the KDS Servo Drive Modules series. It has a continuous current rating of 50 Amps and delivers a continuous power output of 15 kW. The drive module uses forced ventilation for cooling, weighs 14.4 kilograms, and has a DC link voltage of 300 VDC.
Internal Product Review
The KDS1.1-50-300-W1/220 is a Bosch Rexroth Indramat servo drive module built for steady motion control with 50 A continuous current and 15 kW continuous power. Forced ventilation and a 300 VDC DC link support stable thermal performance and efficient drive operation, making this unit a strong choice for demanding servo applications.
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Product Description:
Bosch Rexroth Indramat manufactures the KDS1.1-50-300-W1/220, a servo drive module in the KDS Servo Drive Modules series. The unit converts incoming three-phase power into a regulated DC link and commutates connected synchronous motors, providing velocity and torque control inside automated machinery. As part of a modular drive rack, it mounts alongside supply units and feedback processors. Its forced-ventilation airflow path allows dense cabinet packing without excessive temperature rise, and the module is intended for continuous duty in material-handling, packaging, and general motion axes.
It delivers a continuous output of 50 A, which is the maximum motor phase current it can supply without thermal derating, and the associated continuous power rating is 15 kW. The internal intermediate circuit is maintained at 300 VDC, supplying the IGBT bridge that generates the three-phase output. During rated operation, semiconductor switching and control electronics dissipate 85 W inside the housing, and this heat is removed by the module’s integral blower. The drive section itself weighs 14.4 kg, which is important for panel load calculations. Protection class IP10 limits ingress to objects larger than 50 mm, while humidity classification F helps protect the circuitry against moisture. Separate measurement and signal rails draw 140 mA at +15 V and 950 mA at +24 V for control logic and current-sensing tasks.
External resistive elements account for 220 W of additional power loss, so cabinet ventilation must accommodate both internal and external heat streams. The cooling fan operates from a dedicated input of 220 VAC, allowing the drive to remain powered even when the motor circuit is isolated. Operation is permitted at ambient temperatures up to 55 °C and at mounting altitudes up to 1000 m. Above those limits, the output must be reduced to prevent overheating.
