KSM02.1B-061C-61N-M1-HG0-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-61N-M1-HG0-ET-NN-D7-NN-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat for the decentralized KSM Motor Integrated Servo Drives series. In a single enclosure, it combines a synchronous motor, encoder, drive electronics, and fieldbus interface, enabling mounting directly on the machine frame rather than inside a control cabinet. The unit serves as a compact axis for industrial automation, where it delivers position, speed, and torque control to conveyor segments, pick-and-place heads, and other motion modules that benefit from short cable runs and reduced panel heat load.

The drive uses a hybrid connector that carries power, logic, and network signals through one plug, simplifying installation and daisy-chain layouts. Thermal dissipation relies on natural convection; therefore, the housing must be mounted with unobstructed airflow rather than auxiliary fans. The internal DC link is rated for 750 V DC, matching common three-phase rectified bus supplies in multi-axis machines. Position feedback is exchanged through a Hiperface interface, and the optical encoder provides 128 signal periods per mechanical revolution. This resolution gives the controller fine incremental interpolation for smooth velocity regulation and accurate motion tracking.

The encoder provides multi-turn absolute position tracking, eliminating the need for homing after a power cycle. Communication with the master controller is handled through Multi-Ethernet, allowing EtherNet/IP, PROFINET, or EtherCAT to be selected for the control network. Mechanical power is transmitted through a plain shaft, and a shaft seal limits ingress at the output flange. Winding code 61 is matched to the 061 frame size and the length C stator, providing the required electromagnetic characteristics for this motor configuration. The unit does not include a holding brake, so stationary load retention must be supplied by drive torque or an external mechanism when required. Design version 1 maintains dimensional compatibility with other KSM02 devices.