KSM02.1B-041C-42N-S1-HG0-ET-NN-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-S1-HG0-ET-NN-D7-TO-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By combining a permanent-magnet motor with embedded power electronics, the unit provides decentralized torque generation and closed-loop control for conveyors, pick-and-place axes, and packaging machinery. Its compact housing reduces control-cabinet wiring, allowing the drive to mount directly on the machine frame and receive network commands over a real-time Ethernet backbone.

The drive operates from a DC link of 750 VDC, so it connects to shared bus supplies found in multi-axis installations. Internal heat is removed through natural convection, and the absence of fans reduces maintenance requirements and ambient noise. All power, logic, and feedback signals pass through a single hybrid connector, which simplifies installation and minimizes sealing points. Rotor position is measured by a Hiperface encoder that uses 128 signal periods per revolution, supplying high-resolution feedback to the integrated controller. The optical scanning method provides stable accuracy across temperature changes and remains unaffected by magnetic stray fields, supporting precise servo operation.

Network communication and drive synchronization are handled by the Multi-Ethernet interface, enabling software selection of PROFINET, EtherNet/IP, or EtherCAT. The frame size is 041, and the active stack has a length code of C, providing a balanced ratio of torque to inertia for midrange axes. Output torque is delivered through a plain shaft with a shaft seal, which helps resist dust and fluid ingress. Winding code 42 identifies the electrical characteristics selected for the Basic performance level. The unit is design version 1 and follows the mechanical dimensions of Series 2. It operates without a holding brake, so external holding equipment may be necessary when a stationary load must remain secured after power is removed.