KSM02.1B-041C-42N-M3-HP0-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M3-HP0-ET-L3-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines drive electronics with a synchronous motor in one housing, reducing cabinet space and field wiring for distributed automation systems. The unit is Hardware Series 2 and Design Version 1, with a Basic performance level and a standard design option. A Hybrid Connector carries power and communication signals through one connection, simplifying cable routing between the DC bus and the machine axis. This integrated arrangement supports positioning, speed regulation, and torque control in packaging equipment, handling systems, and other automated machinery.

The drive operates from a DC 750 V supply, allowing it to share a common DC bus with compatible axes. Heat is removed through natural convection, so operation does not require an external fan or liquid-cooling circuit. Encoder feedback is transmitted through a Hiperface interface, providing the drive with rotor position data for closed-loop control. The capacitive encoder generates 16 signal periods during each mechanical revolution and stores absolute position across multiple turns. Motion commands and diagnostic data are exchanged through Multi-Ethernet, which supports integration with compatible EtherNet/IP, PROFINET, or EtherCAT control networks. An internal Safe Torque Off input can interrupt torque-producing current without disconnecting the main DC circuit, supporting controlled machine shutdowns.

The axis is supplied without a holding brake, so an external clamp or drive-generated torque must retain a stationary load. Its output shaft has a keyway that provides positive engagement with a pulley, coupling, or gearbox. A shaft seal protects the bearings and internal motor components from airborne fluids and washdown exposure. Motor size 041 and length code C provide a compact housing for installations with limited mounting space. The encoder uses capacitive sensing and provides multi-turn absolute position data, allowing the controller to retain axis position information through power cycles. Winding code 42 identifies the motor winding used with this frame and cooling arrangement. The standard design option maintains the mounting dimensions and connection arrangement used by compatible KSM units.