KSM02.1B-071C-24N-M3-HG2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-24N-M3-HG2-ET-L3-D7-NN-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines drive electronics and a synchronous motor in a single housing so distributed motion axes can be mounted directly on machinery. This unit has the Basic performance level, follows the standard design option, and is design version 1 in series 2. A frame size of 071 with motor length C allows the device to support moderate-torque tasks without enlarging the control cabinet footprint.

The integrated inverter accepts a supply of DC 750 V, which is typical for DC-bus-coupled multi-axis systems. Network traffic is carried through Multi-Ethernet, allowing the node to switch between PROFINET, EtherNet/IP, and EtherCAT through parameter selection. Drive safety is handled by the Safe Torque Off (STO) circuit, which removes power from the motor windings when the safety channel is activated. Rotor position data reaches the control loop over a Hiperface encoder interface. The capacitive sensor inside the motor delivers feedback at 16 signal periods per revolution and stores multi-turn absolute position information for startups without homing. Its capacitive measuring principle resists dust and magnetic interference, while winding code 24 pairs the electromagnetic stack with the intended current range.

Heat from the electronics is released through natural convection, so no fans or liquid lines are required. The motor incorporates an electrically released holding brake that clamps the shaft whenever the 24 V rail is de-energized. The brake coil is powered by DC 24 V. Power, signal, and safety wiring terminate on a single hybrid connector, reducing the amount of separate cabling needed for installation. A shaft seal protects the internal bearings from contaminants. Torque is transmitted through a plain shaft that eliminates stress concentrations associated with a keyway.