KSM02.1B-041C-42N-M1-HG2-ET-L3-D7-AN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HG2-ET-L3-D7-AN-FW is a motor-integrated servo drive from Bosch Rexroth Indramat within the KSM Motor Integrated Servo Drives series. By merging drive electronics with the permanent-magnet motor in a sealed body, it provides decentralized axis control for conveyors, packaging stations, and handling modules. The housing is cooled by natural convection, so airflow through the machine frame is sufficient for rated operation. This design removes the need for separate control-cabinet drives and shortens encoder, power, and fieldbus cabling on the production floor.

The drive accepts a supply of DC 750 V, which feeds the integrated inverter stage and limits voltage drop on long feeders. All power, encoder, and safety circuits pass through a single hybrid connector, simplifying installation. For real-time coordination, the controller uses Multi-Ethernet communication. An optical feedback unit based on Hiperface delivers position data with 128 signal periods per revolution. The device is the ATEX version and has design version 1, Series 2, and winding code 42. This configuration provides the Basic performance level for the KSM family.

Position integrity and functional safety are handled locally. The encoder stores angular data in a multi-turn absolute format, so homing is not required after power cycles. For load holding on vertical axes, an electrically released brake engages whenever the control signal is removed. Its coil is energized by DC 24 V. A built-in Safe Torque Off (STO) channel disconnects the power devices when a safety relay opens, helping the system meet applicable machine safety directives without external contactors. The plain shaft is protected by a shaft seal. Its 041 frame uses the C-length stator to maintain a short footprint for tight mounting spaces.