KSM02.1B-041C-42N-M1-HP0-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HP0-ET-NN-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By embedding a drive controller directly on the synchronous motor, the device provides decentralized motion control for conveyors, gantry axes, and handling modules in automated production lines. Its compact format reduces cabinet wiring and allows installation close to the driven load, improving response and simplifying machine layouts. The power electronics, feedback circuits, and fieldbus ports share one enclosure, allowing the actuator to operate in installations where cabinet and machine space are limited.

The drive draws power from a common bus with a supply voltage of 750 V DC, enabling regenerative energy sharing between connected axes. Power and feedback lines are bundled through a single hybrid connector, so only one cable must return to the cabinet. Thermal management relies on natural convection, eliminating the need for a cooling fan. Network traffic passes through the Multi-Ethernet interface, which can be configured for SERCOS III, EtherNet/IP, or PROFINET communication. The unit has a basic performance level, a standard design option, design version 1, and Series 2 coding. It is supplied without a holding brake or integrated safety technology.

Rotor position is measured by an optical encoder that communicates through the Hiperface interface. The feedback disk provides 128 signal periods per revolution, while the multi-turn absolute encoder records completed rotations and retains position information after power is removed. This feedback arrangement allows the drive to recover the axis position after startup without requiring a new homing cycle. Size code 041 and motor length C establish the housing dimensions, while the sealed front bearing includes a shaft seal that helps prevent coolant and dust from entering the motor. Output torque is transmitted through a shaft with a keyway, providing positive engagement with compatible couplings. The motor uses winding code 42, which identifies the electrical winding arrangement used with the integrated drive electronics.