KSM02.1B-041C-42N-M3-HP0-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M3-HP0-ET-NN-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for decentralized motion tasks in the KSM Motor Integrated Servo Drives series. It combines controller electronics and a permanent-magnet synchronous motor in one housing. This integrated arrangement reduces cabinet wiring while providing closed-loop control of torque, speed, and position. The unit is intended for compact machinery, transport modules, moving carriages, and gantry axes in industrial automation systems.

The unit uses a hybrid connector for power, signal, and fieldbus routing, simplifying daisy-chain layouts on modular production lines. Its power stage accepts a 750 V DC link, allowing the drive to be installed remotely from the converter without a separate AC mains connection. Command and diagnostic traffic passes through Multi-Ethernet, with software-selectable support for SERCOS III, EtherNet/IP, PROFINET, or EtherCAT. Heat from the servo electronics is dissipated through natural convection, eliminating the need for cooling fans. Frame code 041 indicates the stator diameter and continuous torque class. The assembly has motor length C and winding code 42. It is a Series 2 product with design version 1, a standard build option, and a basic performance level.

The integrated feedback system uses a resolver-based scale with 16 signal periods, which is read by a capacitive sensor head. Its Hiperface channel provides absolute rotor position within one revolution, while a multi-turn absolute counter retains position data across multiple revolutions. Mechanical output is provided by a shaft with a keyway, allowing direct engagement with keyed couplings. An installed shaft seal helps prevent contaminants from entering the motor interior. The drive is supplied without a holding brake, so an external mechanism must secure the load when holding force is required without motor torque. No internal safety technology is installed, so functional safety functions must be provided by external equipment.