KSM02.1B-061C-35N-M3-HG2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-35N-M3-HG2-ET-L3-D7-NN-FW is a motor-integrated servo drive developed by Bosch Rexroth Indramat within the KSM Motor Integrated Servo Drives series. By combining controller electronics with a synchronous motor in a 061 frame size, the unit can be mounted close to the axis it controls, eliminating the need for a separate cabinet-mounted drive. In distributed automation lines, it provides torque, speed, and position control for packaging, material-handling, and assembly equipment while communicating over Ethernet-based industrial networks.

Power and control wiring are routed through a hybrid connector, which carries DC-bus power, signals, and brake conductors in a single plug. The unit is cooled by natural convection, allowing ambient airflow to dissipate operating heat without fans or liquid-cooling equipment. The drive section operates from a 750 V DC supply rail. The electrically released holding brake uses 24 V DC power to release the shaft during operation and engages when power is removed, helping secure vertical loads. Position feedback is processed through a Hiperface interface, which provides absolute position data at startup. The motor has winding code 35, length C, a standard design option, and design version 1 for use in medium-power motion axes.

The encoder uses capacitive sensing and produces 16 signal periods per mechanical revolution. Its multi-turn absolute capability retains position information across multiple shaft revolutions, allowing the control system to determine the axis position without performing a homing cycle after startup. Functional safety is provided by Safe Torque Off (STO), which disables gate signals to the power stage without disconnecting the DC link. Command and diagnostic traffic use Multi-Ethernet communication, supporting integration with Sercos III, EtherNet/IP, PROFINET, or EtherCAT networks. The motor has a basic performance level and belongs to Series 2. Its plain shaft includes a shaft seal, helping prevent contaminants from reaching the bearing area when the motor is connected to an external gearbox or coupling.