KSM02.1B-041C-42N-M1-HP2-ET-S3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HP2-ET-S3-D7-TO-FW is a motor-integrated servo drive from Bosch Rexroth Indramat and belongs to the KSM Motor Integrated Servo Drives series. It combines a controller, inverter, and permanent-magnet motor in one housing, creating a decentralized axis for industrial automation cells. The device supports conveyor segments, handling robots, and compact tooling stations that require precise velocity and position control while minimizing control-cabinet wiring.

Electrical power is supplied at DC 750 V, a common intermediate-circuit voltage that allows several drives to share one rectifier. I/O, power, and safety conductors pass through a single hybrid connector, simplifying installation and reducing the number of separate cable connections. Heat from the inverter is dissipated by natural convection, so an external fan is not required. Communication with the master controller uses Multi-Ethernet, enabling EtherNet/IP, EtherCAT, PROFINET, and SERCOS III communication without hardware changes. Servo feedback uses a Hiperface interface that reads an optical encoder with a resolution of 128 signal periods and provides absolute multi-turn position data for startup without homing. The motor has size 041, length C, and winding code 42, while the drive is design version 1 and Series 2. Its basic performance level supports the torque ranges commonly required by auxiliary machine axes.

A spring-applied, electrically released holding brake powered by DC 24 V secures the shaft when bus voltage is lost or a vertical load must remain stationary. Integrated Safe Motion without SBC circuitry supervises safe torque off and related safety functions without requiring additional relays. A shaft seal protects the bearings from coolant and dust, while a keyway on the output shaft provides positive engagement with a compatible coupling. This shaft arrangement helps prevent rotational slip when torque is transferred to a gearbox, pulley, or other driven component.