KSM02.1B-071C-24N-M1-HP0-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-24N-M1-HP0-ET-L3-D7-TO-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines a permanent-magnet servo motor, inverter stage, and control electronics in one housing, creating a self-contained drive that reduces cabinet space and simplifies wiring in automated assembly lines, conveyors, and packaging machinery. The unit provides closed-loop speed and position control at the point of motion without requiring a separate panel-mounted drive, which also shortens the connections between the power electronics and motor.

Electrical energy reaches the axis through a 750 V DC intermediate circuit, giving the embedded inverter sufficient voltage for rapid acceleration. Heat is removed solely by natural convection, so the aluminum housing must remain exposed to ambient airflow and have adequate clearance from nearby components. Power, feedback, and fieldbus conductors are grouped in one hybrid connector, permitting quick line-side daisy-chaining while reducing the number of separate cable connections. Rotor position is measured by a Hiperface optical sensor that provides 128 signal periods per mechanical revolution, enabling fine interpolation in the controller. The motor has a size of 071 and a length code of C, providing a balance between torque output and installation footprint.

Functional safety is provided by the hardware-based Safe Torque Off (STO) channel, which disables the gate drives without shutting down the control logic. The unit supports Multi-Ethernet communication and can operate as an EtherNet/IP, PROFINET, or EtherCAT node through the appropriate protocol configuration. Mechanical coupling is provided by a shaft with a keyway, and an integral shaft seal helps prevent dust or fluid from entering around the output shaft. The actuator is supplied without a holding brake, so vertical loads require an external locking device when motor torque is unavailable. Winding code 24 indicates the selected stator winding arrangement, and the unit is design version 1 of Series 2 with a basic performance level. Its multi-turn absolute encoder retains position information across multiple shaft revolutions, allowing the controller to recover the axis position after a power cycle without repeating a full homing movement.