KSM02.1B-071C-35N-S1-HG0-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-S1-HG0-ET-L3-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. Because the control electronics are built into the drive housing, the unit can mount directly on machinery and transmit axis data to higher-level automation controllers. In packaging lines, material-handling gantries, or light machining centers, it delivers torque, position, and speed control without requiring a separate cabinet drive, reducing wiring and saving panel space.

The power stage accepts a bus voltage of DC 750 V, so it connects to the Rexroth 750 V DC link that serves multiple distributed axes. Heat generated by the integrated inverter is removed through natural convection, eliminating forced-air fans and allowing installation in clean or particulate-sensitive areas. For functional safety, the unit incorporates Safe Torque Off (STO); when the STO circuit is triggered, drive output power is disabled without relying on contactors. Position feedback is handled through a Hiperface optical encoder interface, and the sensing scale provides 128 signal periods per revolution, giving the controller sufficient resolution for precise synchronization in indexing or interpolation tasks.

Control commands and diagnostic data are exchanged over Multi-Ethernet, which supports operation on SERCOS III, PROFINET, EtherNet/IP, or EtherCAT networks through protocol configuration. The motor section uses frame size 071 with length code C, providing a compact package that still supplies moderate continuous torque. Mechanical output is provided through a plain shaft with a shaft seal, which helps protect the internal bearings against splash and dust. The drive is supplied without a holding brake, so an external mechanism must secure vertical loads. Winding code 35 identifies the copper fill and slot geometry used for medium-speed, medium-torque applications.