KSM02.1B-041C-42N-S1-HG0-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-S1-HG0-ET-L3-D7-TO-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines a permanent-magnet motor and drive electronics in one housing to provide decentralized motion control for packaging lines, handling robots, and other distributed automation systems. The device belongs to Series 2, carries design version 1, and has the Basic performance level. Eliminating a separate cabinet-mounted amplifier simplifies wiring and supports compact machine layouts.

The unit draws power from a DC 750 V link, allowing direct connection to a shared DC bus without an intermediate converter. Rotor position is measured through a Hiperface interface that provides absolute feedback with 128 signal periods per mechanical revolution. The optical single-turn encoder supports precise speed and position control loops. The drive electronics use natural convection for cooling, so no fans are required. The integrated Safe Torque Off (STO) function removes drive energy from the motor when the safety circuit opens. The motor has winding code 42 and length C, providing electrical characteristics suited to midrange axis loads. It does not include a holding brake, so external mechanics or drive torque must maintain the load position when power is unavailable.

A front-mounted hybrid connector combines power, feedback, and fieldbus conductors in one plug, reducing the number of separate cable connections. Real-time control data are exchanged over Multi-Ethernet networks, and the integrated coupling supports several Ethernet-based protocols without additional communication hardware. Mechanical power is transmitted through a plain shaft, while a shaft seal helps prevent lubricant leakage and dust entry. Frame size 041 aligns the flange pattern with compatible Rexroth servomotors. Cooling ribs on the housing release heat into the surrounding air, and the plain front face supports decentralized mounting near the driven load.