KSM02.1B-041C-42N-S3-HP2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-S3-HP2-ET-L3-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. Combining power electronics, feedback, and motor components in a compact housing, it executes position and speed control directly on the machine axis. The device eliminates separate drive cabinets and shortens cable runs, making it suitable for modular conveyors, pick-and-place gantries, and other distributed automation nodes.

The integrated power section accepts a supply of DC 750 V, so it can be fed from a shared intermediate circuit on multi-axis machines without an additional rectifier. Field wiring is simplified by a single hybrid connector that carries power, safety, and network traffic through one cable. Control data moves over Multi-Ethernet ports, allowing the unit to join EtherNet/IP, PROFINET, or EtherCAT motion networks without hardware changes. Heat generated by the drive electronics is removed through natural convection; therefore, no fans are needed, and contamination caused by circulating air is avoided. Integrated functional safety is provided by Safe Torque Off (STO), which disables the power stages in less than a millisecond when an emergency circuit opens.

Axis feedback relies on the Hiperface interface and a capacitive single-turn sensor that resolves rotor position into 16 signal periods per revolution. This arrangement provides absolute position data at power-up and maintains resistance to magnetic fields and oil mist. The electrically released brake engages when the motor loses its DC 24 V holding supply, securing vertical loads without external clamps. Output torque is transmitted through a shaft with a keyway, and a shaft seal helps prevent lubricant leakage. The motor has size 041, length C, and winding code 42, while the drive has a basic performance level and belongs to Series 2.