KSM02.1B-076C-35N-M1-HP0-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-076C-35N-M1-HP0-ET-L3-D7-NN-FW is a motor-integrated servo drive manufactured by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives Series 2. By combining a permanent-magnet synchronous motor with an onboard inverter, the unit removes the need for a separate cabinet-mounted amplifier and streamlines decentralized motion control on packaging, assembly, and conveyor modules. Direct mounting near the axis keeps cable runs short while the drive delivers the closed-loop torque, speed, and position control required in automated production lines.

The drive accepts a bus voltage of DC 750 V, allowing multiple KSM axes to share energy through a common DC link. Heat is removed solely by natural convection, eliminating the need for fans or liquid coolers. Power, control, and feedback signals travel through a hybrid connector, reducing wiring points in the machine harness. Functional safety is provided by Safe Torque Off (STO); when the STO circuit is activated, torque output is inhibited without disconnecting the supply. Position feedback comes from a Hiperface encoder that supplies 128 signal periods per revolution for fine interpolation. The encoder uses optical scanning, while winding code 35, the standard design option, and design version 1 identify the electrical and operating configuration.

The sensing element is a multi-turn absolute encoder, so shaft position across several thousand revolutions is retained after power loss. Communication with higher-level controllers uses Multi-Ethernet, enabling operation with Sercos III, EtherNet/IP, or PROFINET through software selection. The mechanical interface uses motor size 076 and length C, and it includes a shaft with a keyway and a sealed front bearing to help block contaminants. The unit has a Basic performance level and is supplied without a holding brake. This arrangement leaves the rear section unobstructed while allowing the keyed shaft to transfer torque through a positively engaged coupling.