Product Description:

The KSM02.1B-041C-42N-S1-HG0-ET-L3-D7-NN-FW is manufactured by Bosch Rexroth Indramat and belongs to the KSM Motor Integrated Servo Drives series. It integrates a synchronous servo motor, power stage, and motion-control electronics within one housing, allowing decentralized axis control in packaging lines, handling robots, and material-processing machines. The combined layout places the drive electronics directly at the axis, which reduces the need for a separate motor cable between the inverter and the actuator. This arrangement is useful in machine sections where distributed installation and compact wiring paths are preferred.

For power, the drive accepts DC 750 V from a central supply and distributes both control and motor phases through a hybrid connector, so only one cable is routed along the machine frame. Thermal dissipation relies on natural convection, eliminating the need for forced-air or liquid cooling. Axis commands and diagnostic data are exchanged over Multi-Ethernet, which allows the same hardware to operate on PROFINET, EtherNet/IP, or EtherCAT networks. The integrated drive supports Safe Torque Off (STO), so electrical torque is removed when a safety input is triggered. The unit is design version 1 with a standard option set and belongs to series 2 with a basic performance level. It has no holding brake, so static position must be maintained by the control loop or by external clamping. A shaft seal is fitted to limit ingress at the motor front, and the internal conductors are matched to winding code 42 in the C-length stator.

Position feedback is provided through a Hiperface link that carries power and bidirectional data to an optical sensor embedded in the motor. That sensor divides one mechanical revolution into 128 signal periods, and because it is single-turn, the controller must derive multi-turn position information from the application when needed. Mechanically, the actuator uses size code 041, which helps it fit into tight spaces while preserving the torque behavior of its matched winding. Torque is delivered through a plain shaft that is precision-ground for concentric rotation. This shaft arrangement supports direct coupling where a keyed shaft is not required.