KSM02.1B-041C-42N-S1-HG2-ET-L3-D7-AE-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-S1-HG2-ET-L3-D7-AE-FW is a motor-integrated servo drive built by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By combining a brushless servo motor and drive electronics in one housing, it simplifies installation in distributed automation cells that require precise position and speed control. The unit belongs to the Series 2 platform and has design version 1. Its size 041 stator and length code C winding pack provide moderate continuous torque without requiring additional cabinet space.

The drive accepts a bus supply of DC 750 V, allowing it to connect directly to the high-energy DC links used in multi-axis systems. Power, logic, and feedback share a single hybrid connector, which reduces cable count and simplifies routing through the machine. Thermal management relies on natural convection, so ambient airflow must remove generated heat without assistance from an installed fan. Rotor position is reported through a Hiperface optical encoder that generates 128 signal periods per revolution, giving the control loop fine angular resolution for smooth motion at low speeds. The encoder uses a single-turn design suited to applications that do not require stored position data across multiple mechanical revolutions.

A DC 24 V electrically released holding brake clamps the plain shaft whenever control power is absent and releases it when the brake coil is energized. Communication with higher-level controllers is handled through Multi-Ethernet, allowing the drive to operate with several supported industrial Ethernet protocols. The integrated safety function provides Safe Torque Off (STO), which disables torque-producing drive output without interrupting the fieldbus connection. A shaft seal protects the internal bearings from dust and coolant splash, while the plain shaft supports direct attachment to a suitable coupler or gearbox. The drive has a Basic performance level, and winding code 42 establishes the electromagnetic arrangement used for its torque and speed range.