KSM02.1B-076C-35N-S1-HG2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-076C-35N-S1-HG2-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 permanent-magnet servomotor, power electronics, and a fieldbus interface in one housing to provide decentralized axis control for automation cells that require compact installation and precise positioning. The product is part of Series 2 and has a basic performance level, allowing it to be mounted directly on moving machine components while reducing cabinet wiring.

The drive operates from a nominal DC 750 V bus supplied by the machine's central power source, and winding code 35 matches this voltage so current remains within the inverter limits. Cooling is provided by natural convection, eliminating fans and simplifying enclosure sealing. Communication is routed through a Multi-Ethernet master interface that supports several industrial Ethernet protocols without gateways. Position feedback uses a Hiperface connection to an optical single-turn encoder with a resolution of 128 signal periods, providing precise electrical angle data for smooth torque production. The motor has size 076 and length C, while the standard design and Version 1 maintain the intended housing dimensions for this model.

A hybrid connector on the rear cap combines DC power, network, and I/O conductors in one plug, reducing the number of separate cable connections. For load-holding applications, the servomotor includes an electrically released brake that clamps the shaft when its control line is de-energized. The brake coil operates at DC 24 V for compatibility with common control circuits. Functional safety is provided by Safe Torque Off (STO), which disables torque-producing energy without interrupting communication with the axis controller. The plain shaft has an integral seal that helps prevent contaminants from reaching the bearings and supports direct coupling to timing pulleys or backlash-free clamping hubs.