Product Description:

The KSM02.1B-041C-42N-M1-HP0-ET-L3-D7-NN-FW is manufactured by Bosch Rexroth Indramat as part of the KSM Motor Integrated Servo Drives series. It combines power electronics, a permanent-magnet synchronous motor, and feedback hardware in one housing, creating an axis that can mount directly on moving machinery. The unit performs closed-loop speed and position control in decentralized automation where cabinet space is limited.

A Hybrid Connector carries power, feedback, and fieldbus signals through one plug, which helps reduce cable bundles. Heat is removed through natural convection, so no fan or liquid circuit is required inside the machine envelope. The inverter section accepts a DC 750 V intermediate circuit supplied by a central power line. Position feedback is transmitted over a Hiperface interface, and the optical encoder delivers 128 signal periods per mechanical revolution for smooth velocity control. Design version 1 corresponds to motor size 041 with length C and winding code 42 at the basic performance level. A shaft seal protects the bearings when the drive is mounted outside the cabinet.

For networked control, motion commands are exchanged through Multi-Ethernet, allowing the axis to operate with SERCOS III, EtherNet/IP, EtherCAT, or PROFINET without hardware changes. Absolute position is retained after power loss because the feedback system is multi-turn absolute, which stores several revolutions of rotor data internally. Functional safety includes Safe Torque Off (STO), so torque can be removed without disconnecting bus power. Mechanical transmission to the load uses a shaft with a keyway, providing a positive drive interface for quick coupling to belts or gear elements. Series 2 construction comes without a holding brake, so static loads must be held by external clamping or motor torque when required.