KSM02.1B-041C-42N-M1-HG0-ET-S3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HG0-ET-S3-D7-NN-FW is produced by Bosch Rexroth Indramat within the KSM Motor Integrated Servo Drives series. By combining a permanent-magnet synchronous motor with onboard power electronics, it delivers closed-loop axis control directly at the machine frame and reduces cabinet wiring in industrial automation cells. The integrated design supports a decentralized topology, so the product acts as both an actuator and a drive for conveyors, packaging stations, and general handling equipment.

The drive section is energized from a 750 V DC bus, allowing it to share a common supply with regenerative axes. Thermal management relies on natural convection, so no fans are fitted, and the mounting arrangement must permit unobstructed vertical airflow. Position data are exchanged through a Hiperface interface, and the optical encoder generates 128 signal periods per mechanical revolution, providing suitable resolution for interpolated motion. Command and diagnostic traffic flows over Multi-Ethernet, enabling direct connections to EtherNet/IP, PROFINET, or EtherCAT networks without additional option cards. This model has a basic performance level and uses design version 1 for standard duty cycles.

Length code C and frame size 041 establish the mechanical envelope, while winding code 42 identifies the electrical characteristics used with the Series 2 electronics. The encoder provides multi-turn absolute feedback, so homing is unnecessary after power is restored. A plain shaft is protected by a lip seal, which helps limit coolant ingress along the shaft. The single-cable architecture uses a hybrid connector that carries power, feedback, and safety signals in one cable run. Functional safety is implemented through Safe Motion. The unit is supplied without a holding brake, so external clamping must secure the load when holding force is required.