KSM02.1B-041C-42N-M1-HP2-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HP2-ET-L3-D7-TO-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By combining a permanent-magnet servomotor and drive electronics in one housing, it reduces panel wiring and simplifies installation in distributed automation systems. The unit is intended for motion axes that require a compact form factor, and its motor size 041 and length code C support decentralized torque generation at moderate power levels. The integrated arrangement also shortens cable routes between the drive electronics and motor, reducing the amount of equipment required inside the main control cabinet.

The drive electronics accept a DC 750 V bus, allowing one power supply to feed multiple axes through a shared connection. Power, signal, and brake leads use a single hybrid connector to simplify daisy-chain wiring between units. Heat leaves the housing through natural convection, so the drive does not require fans or a liquid-cooling circuit. Feedback is transmitted over Hiperface, and the optical sensor provides 128 signal periods per revolution for accurate commutation and position monitoring. Command data arrive through the Multi-Ethernet master interface, while design version 1 and series 2 identify the unit's control platform. The Basic performance level supports applications with steady cyclic torque, and winding code 42 establishes the electrical characteristics used by the drive controller.

An electrically released holding brake engages when power is removed and opens when DC 24 V is applied, helping prevent load drift on vertical axes. Integrated safety circuitry provides Safe Torque Off (STO), allowing motor torque to be disabled without external power contactors. Mechanical power is transmitted through a shaft with a keyway, while a factory-installed shaft seal helps protect the bearings from coolant and dust. The optical multi-turn absolute encoder tracks position across as many as 4096 revolutions, allowing the controller to retain extended position information for coordinated motion. Sealed electronics limit exposure to industrial contaminants, and passive cooling eliminates fan-related airflow requirements in packaging, gantry, and material-handling equipment.