KSM02.1B-041C-42N-S1-HG0-ET-SD-D7-TO-FW by Bosch Rexroth Indramat

Bosch Rexroth Indramat supplies the KSM02.1B-041C-42N-S1-HG0-ET-SD-D7-TO-FW as a motor-integrated servo drive within the KSM Motor Integrated Servo Drives series. The unit combines a permanent-magnet motor, position feedback, power electronics, and a fieldbus interface in one housing, allowing decentralized installation on machine frames. By eliminating a separate control-cabinet inverter and locating control intelligence near the load, it simplifies wiring while providing closed-loop speed and torque regulation for automated handling, packaging, and assembly stations.

Power is supplied through a hybrid connector that carries the DC bus, control supply, and network signals in a single plug. The electronics accept up to DC 750 V, matching common multi-axis supply rails. Heat produced by the inverter is removed through natural convection, so no fans are required, but the installation must allow unobstructed vertical airflow. A built-in output coupling supports Multi-Ethernet communication and permits operation with EtherNet/IP, PROFINET, or EtherCAT through the appropriate configuration settings. The axis incorporates Safe Motion with SBC, providing safe torque off and safe brake control functions without external relays. The unit has Series 2 hardware, design version 1 electronics, winding code 42, motor length C, and a Basic performance level. It does not include a holding brake, so stationary loads must be secured by drive torque or external mechanics. A shaft seal protects the interior from dust and splashing liquids.

Position feedback is handled by a Hiperface interface with an optical scanning element that resolves the rotor angle into 128 signal periods per mechanical revolution. The feedback assembly is a single-turn device, so absolute position is retained within one revolution and can be read immediately after the control system starts. A frame size of 041 establishes the mounting pitch and permissible radial load, supporting compact machinery that requires precise orientation from an integrated drive. The motor uses a smooth shaft, allowing it to connect to compatible clamping couplings without a keyway. Its integrated arrangement reduces the amount of motor and feedback cabling routed between the control cabinet and the machine axis.