KSM02.1B-061C-35N-M1-HG0-ET-S3-D7-TO-FW by Bosch Rexroth Indramat

Bosch Rexroth Indramat manufactures the KSM02.1B-061C-35N-M1-HG0-ET-S3-D7-TO-FW as part of the KSM Motor Integrated Servo Drives series. This motor-integrated servo drive places power electronics directly on the motor housing, allowing machine builders to distribute controlled axes without relying on large centralized control cabinets. The device is design version 1 of series 2, has motor size 061 with length code C, and operates at the Basic performance level. By combining the motor and drive in one housing, it provides closed-loop torque, speed, and position control for packaging, assembly, and material-handling equipment connected to a common DC bus.

The electrical interface uses a hybrid connector that carries power, control, and Ethernet conductors through one sealed connection. Heat from the power section is dissipated through natural convection, eliminating cooling fans and requiring sufficient mounting clearance for airflow. A shared bus voltage of DC 750 V supplies the inverter stage and supports energy transfer among connected axes. Motor feedback is transmitted through Hiperface, while the encoder produces 128 signal periods per revolution for accurate commutation and motion control. The unit is supplied without a holding brake, so vertical loads require an external clamping mechanism or another means of preventing movement when power is removed. Its plain shaft includes a seal that helps limit dust entry and oil migration while supporting clamp-style couplings.

A multi-turn absolute encoder retains shaft position across power cycles, reducing the need to establish the axis position again after startup. The encoder uses optical sensing to measure rotor movement and provide precise position data to the integrated drive. The drive includes Multi-Ethernet output coupling, allowing connections to Sercos III, EtherNet/IP, EtherCAT, or PROFINET networks through a common communication platform. Functional safety is provided by the Safe Motion package without SBC, which supports STO and SS1 while leaving brake control external. Winding code 35 sets the stator arrangement used with this motor frame and supports the required electromagnetic characteristics. The C-length housing provides the active motor length needed for its torque capability while retaining a compact form for decentralized installation.