KSM02.1B-071C-35N-M1-HG2-ET-SD-D7-NN-FW by Bosch Rexroth Indramat

Bosch Rexroth Indramat builds the KSM02.1B-071C-35N-M1-HG2-ET-SD-D7-NN-FW for the KSM Motor Integrated Servo Drives series. The unit combines a servo motor and drive electronics in one housing, providing axis control without a separate cabinet-mounted inverter. It belongs to Series 2, follows the Basic performance level, and has motor size 071 with length code C. As a motor-integrated servo drive, it handles positioning and speed loops directly at the machine, reducing the amount of wiring between the motor and control cabinet. The motor has a plain shaft with a factory-installed shaft seal, providing a simple mechanical interface while helping prevent contaminants from reaching the internal components.

The power stage operates from a DC 750 V intermediate bus and dissipates heat through natural convection, so no cooling fan is required. A single hybrid connector carries DC power, safety I/O, and feedback lines, reducing the number of separate cable connections. Drive control data move over Multi-Ethernet, which supports EtherNet/IP, PROFINET, or EtherCAT communication. Winding code 35 matches the integrated inverter to the stator, and the Standard design option indicates the baseline motor configuration. The unit is design version 1. An electrically released holding brake clamps the rotor when its release power is removed, helping secure the connected load while the axis is stopped.

The brake coil operates at DC 24 V, allowing the control circuit to remove voltage and engage the brake during a controlled or emergency stop. Rotor position is transmitted through a Hiperface interface, providing feedback for the drive's position and speed loops. The optical encoder delivers 128 signal periods per revolution and stores multi-turn absolute position data. This stored position information remains available after a power cycle, reducing the need for repeated reference movements when the system restarts. Integrated Safe Motion with SBC supports certified stop and limited-speed functions through onboard safety logic. The Safe Brake Control function also provides controlled brake operation as part of the integrated safety system.