KSM02.1B-061C-35N-M1-HG2-ET-S3-D7-ES-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-35N-M1-HG2-ET-S3-D7-ES-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. In one compact housing, it combines a synchronous servo motor, drive electronics, and a fieldbus interface, enabling decentralized motion axes without separate control cabinets. The unit regulates speed, torque, and position for automated machinery such as packaging stations and small transfer modules. Its integrated design reduces the amount of equipment that must be installed in a central enclosure and shortens the wiring path between the motor and drive electronics.

Power, control, and feedback lines are routed through a hybrid connector, reducing a multi-cable loom to one composite lead. The internal electronics accept 750 V DC from a shared DC link, and the inverter converts this power into controlled phase currents. Natural convection through the aluminum frame removes heat without a fan or liquid-cooling circuit. Position feedback is handled by an optical Hiperface encoder that produces 128 signal periods per revolution and stores multi-turn absolute position data in nonvolatile memory. An electrically released brake locks the shaft when supply power is absent, and its armature is energized at 24 V DC. This arrangement allows the drive to retain position information after shutdown while mechanically securing the connected load.

Design Version 1 places the drive in mechanical Series 2, and the housing has motor size 061 with a matching C length. The stator has winding code 35, which indicates the resistance and inductance values used with this naturally cooled arrangement. Functional safety is provided by Safe Motion without an SBC module, allowing the drive to monitor stopping, limited speed, and position functions. External system control is provided through Multi-Ethernet communication, allowing connection to EtherNet/IP, PROFINET, or EtherCAT networks. A shaft seal surrounds the plain output shaft to help prevent contaminants from entering the motor housing. The sealed shaft arrangement is suitable for machinery where the motor may be exposed to dust or occasional fluid contact during operation.