KSM02.1B-071C-35N-S1-HP0-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-S1-HP0-ET-NN-D7-NN-FW is an integrated servo drive in the KSM Motor Integrated Servo Drives series produced by Bosch Rexroth Indramat. This device combines a synchronous motor, feedback electronics, and a power stage in one housing, allowing individual axes to be mounted close to the load while sharing a common DC bus. This arrangement simplifies wiring and enables decentralized control in automated packaging, assembly, and material-handling lines where compact drives provide precise position and speed regulation.

The drive draws its intermediate-circuit energy from a 750 V DC supply, and both power and Ethernet conductors reach the unit through a single hybrid connector. Heat is removed by natural convection, allowing operation without serviceable fans. Field communication uses Multi-Ethernet, so the axis can operate as an EtherNet/IP, PROFINET, or EtherCAT node under the selected controller. Rotor position and motor commutation data are transmitted to the inverter through the Hiperface interface. A frame size of 071, length code C, and winding code 35 establish the motor dimensions and electrical characteristics, while the standard design option and Version 1 indicate a baseline configuration without special modifications.

Fine positioning accuracy is supported by an encoder resolution of 128 signal periods, which works with the optical scanning principle to deliver stable feedback throughout the operating speed range. The feedback uses a single-turn format, so turn counting must be handled externally when an application requires position tracking across multiple revolutions. The motor has a shaft with a keyway, permitting direct coupling to pulleys or gearboxes that use a keyed connection. A shaft seal helps limit contaminant ingress around the output shaft. The motor is supplied without a holding brake, so vertical axes require external braking or another method of preventing unintended movement when drive torque is unavailable.