KSM02.1B-041C-42N-S3-HG0-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-S3-HG0-ET-L3-D7-NN-FW is a motor-integrated servo drive from the Bosch Rexroth Indramat KSM Motor Integrated Servo Drives series. By combining a brushless servo motor with its drive electronics inside one housing, the unit delivers decentralized motion control for packaging lines, material-handling axes, and other distributed automation tasks. It reduces the need for separate control cabinets on the machine frame and simplifies wiring while still providing closed-loop velocity and position regulation.

A single hybrid connector carries power, safety, and network lines, reducing the number of installation points. The drive operates from a 750 V DC bus, so it connects directly to common intermediate-circuit supplies on modular machines. Heat generated by the electronics is removed through natural convection, allowing cabinet-free mounting without fans. Position feedback uses Hiperface, which provides 16 signal periods per motor revolution and works with the capacitive sensor inside the encoder for accurate commutation. Integrated safety includes Safe Torque Off (STO), which disables motor torque without disconnecting the main power supply. Frame size 041 and winding code 42 establish the electromagnetic configuration, while length C provides a midrange torque curve suited to general-purpose axes.

Control integration is handled by a Multi-Ethernet master port that can use EtherNet/IP, PROFINET, SERCOS III, or EtherCAT, allowing the interface to support several PLC platforms. The encoder's capacitive measuring principle tolerates dust or oil films better than optical disks, improving reliability in open machinery. A plain shaft with a factory-installed shaft seal supports belt or coupling transmission and limits ingress along the rotor. The unit has a Basic performance level and provides standard motion functions without option modules. It is supplied without a holding brake, so drive torque or an external mechanical device must provide static positioning.