Product Description:

Bosch Rexroth Indramat builds the KSM02.1B-041C-42N-M1-HP2-ET-L3-D7-NN-FW as part of the KSM Motor Integrated Servo Drives series. This motor-integrated servo drive combines a permanent-magnet servomotor, power electronics, and control functions in one housing, allowing decentralized mounting directly on the machine frame. In factory automation, it positions rotary axes without a separate cabinet-mounted drive, which reduces wiring length and frees cabinet space. Because the inverter and motor share one enclosure, the axis can be mounted as a self-contained drive unit on fixed machine frames or moving assemblies.

The unit accepts a bus supply of DC 750 V, delivered through a Hybrid Connector that carries power, signals, and protective earth in one plug. This arrangement reduces the number of separate cable entries at the drive body. Heat is removed by natural convection, so no fan or coolant lines are needed when the drive is installed in open air. Functional safety is provided by Safe Torque Off (STO), which supports Category 3 stop requirements without contactors. The drive communicates with higher-level controllers via Multi-Ethernet, supporting several real-time fieldbus systems through the same port. It is the standard design option with build version 1, and the unit also belongs to the basic performance level in internal series 2, with motor size 041, length C, winding code 42, and a shaft seal at the output flange.

Feedback is provided by a Hiperface optical encoder that delivers 128 signal periods per revolution and stores multi-turn absolute data, so the axis reports position immediately after power-up. Motion can be held during emergency stops by an electrically released brake energized at DC 24 V; when that voltage is removed, the rotor locks mechanically. The brake allows the motor to hold position mechanically instead of relying only on electromagnetic torque. The encoder’s optical scanning, the multi-turn mechanism, and the keyed shaft work together so the drive can maintain position information while transmitting torque through a positive shaft connection. That combination allows the axis to restart with stored position data after power returns.