KSM02.1B-061C-61N-S1-HP0-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-61N-S1-HP0-ET-NN-D7-NN-FW is a motor-integrated servo drive from Bosch Rexroth Indramat in the KSM Motor Integrated Servo Drives series. It belongs to design version 1 and the second series generation. As a self-contained axis, it combines a permanent-magnet motor, power electronics, feedback evaluation, and fieldbus interfaces in one housing that mounts directly on the machine frame. The unit provides precise position and velocity control for distributed axes while eliminating separate cabinet drives, shortening cable runs, and simplifying installation on conveyors, pick-and-place modules, and format-adjustment mechanisms.

A hybrid connector carries DC power, encoder signals, and Ethernet communication through a single plug, reducing panel space and simplifying cable routing. The internal inverter operates from a 750 V DC link, allowing direct connection to shared bus supplies used in multi-axis systems. Heat is dissipated through natural convection, and the absence of fans allows the unit to operate without forced-air cooling when adequate ambient airflow is available. Control data and diagnostic information travel over Multi-Ethernet, which supports integration with PROFINET, EtherNet/IP, or EtherCAT control networks. Rotor position is captured through a Hiperface optical encoder interface, providing absolute feedback at power-on and reducing the need for homing movements.

The encoder produces 128 signal periods per mechanical revolution, giving the drive fine interpolation for smooth low-speed motion and precise speed regulation. The 061 frame size and C length provide a compact assembly that can be mounted within confined tooling areas. Torque is transmitted through a shaft with a keyway, permitting direct coupling to timing belts, gearboxes, or rigid hubs without special adapters. The axis is supplied without a holding brake, so applications that require static load retention must use motor torque, an external clamp, or a gravity-neutral orientation. Omitting the brake reduces the number of internal components and removes brake wear from repetitive operating cycles.