KSM02.1B-041C-42N-M1-HG0-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HG0-ET-L3-D7-TO-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat within the KSM Motor Integrated Servo Drives series. It combines a synchronous motor, power stage, and control electronics in one assembly, eliminating the need to install a separate motor and drive controller. This arrangement reduces cabinet wiring and supports decentralized motion control in compact packaging, handling, and assembly equipment. The product belongs to Series 2 and uses design version 1.

The drive operates from a 750 V DC supply distributed along the installation. Heat is dissipated through natural convection, so the unit does not require a forced-air fan or liquid-cooling circuit. A single hybrid connector carries DC power, control voltage, and communication signals, reducing the number of separate cable runs. Position feedback is transmitted through a Hiperface interface connected to an optical encoder. The encoder provides 128 signal periods per revolution and retains multi-turn absolute position information without battery support. Winding code 42 matches the integrated inverter to the motor's torque and speed characteristics, while motor length C establishes the axial housing length. The drive has a basic performance level intended for standard point-to-point motion tasks.

The Multi-Ethernet interface supports communication with compatible control systems using protocols such as PROFINET, EtherNet/IP, or EtherCAT. Drive disable is provided by the integrated Safe Torque Off (STO) circuit, which prevents the motor from producing torque when the safety function is activated. The motor does not include a holding brake, so an external clamp or drive-applied torque must secure the load when required. Mechanical output is transferred through a plain shaft designed for use with a suitable clamping coupling. A shaft seal limits the entry of dust and fluids around the output end during operation and washdown. The housing follows motor size 041, which establishes its flange pattern and mechanical envelope for connection to compatible gearboxes, pulleys, or belt-driven equipment.