KSM01.2B-071C-24N-S1-HG0-SE-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM01.2B-071C-24N-S1-HG0-SE-NN-D7-NN-FW is a motor-integrated servo drive from Bosch Rexroth Indramat's KSM Motor Integrated Servo Drives series. It combines a permanent-magnet synchronous motor with an embedded power stage, allowing the drive to be mounted directly on a moving axis instead of inside a control cabinet. This arrangement shortens feedback lines, limits electromagnetic interference, and supports decentralized motion tasks in conveyors, pick-and-place actuators, and light assembly equipment.

A single hybrid connector carries power, control, and brake lines, so only one cable run is needed during installation. Thermal energy leaves the housing through natural convection, eliminating fans and reducing maintenance requirements. The power stage accepts a bus voltage of DC 750 V, making the unit compatible with high-speed DC-link supplies used in modular automation cells. Rotor position data are transmitted through the Hiperface interface. The optical encoder supplies 128 signal periods per revolution, allowing the drive to resolve fine increments without external interpolation. Command data and real-time status travel across the SERCOS fiber ring, while the protocol-conversion electronics process incoming telegrams for the embedded controller.

The communication layer supports SERCOS 2 (RS-422), allowing the axis to share synchronous cyclic data with other drives on the Series 1 platform. A frame size of 071 and motor length code C provide a balance between torque density and housing dimensions. A plain shaft supports direct coupling to precision gearheads. The unit is built according to Design Version 2 and uses winding code 24 for its stator configuration. It is supplied without a holding brake, so stationary loads may require an external holding mechanism. A shaft seal helps block contaminants, while external devices must provide functional safety because the unit has no integrated safety technology.