KSM02.1B-071C-24N-S1-HP0-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-24N-S1-HP0-ET-NN-D7-NN-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat within the KSM Motor Integrated Servo Drives series. It combines a 071-frame motor of length C with drive electronics, allowing motion control hardware to be mounted directly on a machine axis. The unit belongs to internal series 2 and uses the standard design option with a basic performance level. This decentralized arrangement reduces the amount of drive equipment required inside the control cabinet. The unit is supplied without a holding brake, so an external mechanism or drive-applied torque must retain the load when necessary. It also has no integrated safety technology, requiring safety functions to be provided elsewhere in the machine system.

The drive connects through a single hybrid connector that carries DC power, feedback, and network signals, simplifying machine wiring. A nominal bus voltage of DC 750 V powers the inverter stage and supports efficient power distribution to decentralized axes. Heat is removed through natural convection, so the enclosure dissipates thermal energy without built-in fans. Position feedback is transmitted through a Hiperface interface, which carries incremental and absolute position data from the optical encoder to the control loop. The encoder tracks the motor shaft over 128 signal periods per mechanical revolution, providing the resolution needed for velocity regulation and commutation. Design version 1 and the standard cooling profile establish the applicable housing arrangement and operating limits.

The internal controller exchanges cyclic data with the PLC through a Multi-Ethernet port that supports multiple real-time Industrial Ethernet protocols. Absolute rotor position is measured in a single-turn format, providing the angular position within one mechanical revolution after startup. This feedback arrangement is suitable for axes that return to a known reference position during each operating cycle. Output torque is transferred through a shaft with a keyway, providing positive engagement with a compatible coupling, pulley, or gearbox. A shaft seal helps protect the bearing area from moisture and contaminants when the drive is installed near washdown processes. The motor uses winding code 24 for its electromagnetic configuration, while the 071 frame provides the associated rotor inertia and mechanical envelope.