KSM02.1B-071C-35N-M3-HP0-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-M3-HP0-ET-L3-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines a synchronous motor, inverter stage, and motion control electronics in one enclosure, allowing placement close to the mechanical load. This configuration supports decentralized automation lines where local drives reduce panel space and feedback cabling, especially on packaging, handling, and small assembly modules.

The drive is fed from a DC 750 V common bus, so it can share regenerated energy with other axes on the machine. Power, signal, and communication lines enter through a single hybrid connector, minimizing the connector count and simplifying installation. Thermal energy leaves the housing through natural convection; there are no fans, so maintenance is limited to keeping the airflow channels clear. Motion commands reach the integrated controller through the Multi-Ethernet interface, which supports several real-time Ethernet fieldbuses without requiring different hardware. Rotor position feedback is generated by a capacitive encoder that is insensitive to magnetic fields and delivers precise phase information for accurate commutation.

A resolution of 16 signal periods per mechanical revolution provides closely spaced commutation points, while the multi-turn absolute position function retains the shaft position across power cycles for immediate starts without homing. Integrated Safe Torque Off (STO) disconnects the power stage so the motor cannot produce torque when the safety circuit is open. Mechanical output is delivered through a shaft with a keyway, providing positive torque transmission to pulleys or couplings. The motor has a size of 071, length code C, winding code 35, and a basic performance level suited to mid-range servo duties. The unit uses design version 1 and a standard housing. A shaft seal helps protect the internal components, and the motor is supplied without a holding brake for applications that use an external load-holding method.