KSM02.1B-076C-35N-M1-HG2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-076C-35N-M1-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 is a generation 2 unit with design version 1 and the standard mechanical option, and its drive electronics are mounted directly on the servomotor. The unit has a basic performance level and uses the medium C frame length to provide closed-loop motion control for decentralized machine axes. Integrating the power electronics with the motor shortens cable runs, reduces exposure to electromagnetic interference, and supports modular machine layouts without requiring separate drive equipment in the main cabinet.

The single-cable interface terminates through a hybrid connector that carries three-phase power, encoder data, and STO safety signals in one plug. The internal inverter draws power from a DC 750 V bus and is cooled by natural convection, so it does not require fans or liquid cooling. Integrated Safe Torque Off (STO) circuits disable the power devices rapidly without requiring the main connector to be opened. Network control is handled through Multi-Ethernet, which supports PROFINET, EtherNet/IP, and EtherCAT communication through the same interface. The motor has a plain shaft with a factory-installed seal that helps protect the internal components from dust and fluid ingress. Winding code 35 establishes the stator resistance and inductance values used by the drive's current regulators.

Position feedback is supplied by an optical Hiperface encoder that produces 128 signal periods per revolution. Its multi-turn absolute capability allows the drive to report the shaft position immediately after power-up without requiring a homing cycle. An electrically released holding brake uses a separate DC 24 V supply to release the shaft during operation and clamps the shaft when brake power is removed. This arrangement helps secure vertical loads when the drive enters an STO state or loses control power. The 076 frame size provides medium inertia for packaging, assembly, and material-handling axes. The sealed shaft interface also supports installations where airborne particles or occasional fluid exposure could otherwise reach the motor bearings.