KSM02.1B-071C-35N-M1-HP0-ET-S3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-M1-HP0-ET-S3-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines a drive inverter with a size 071, length C synchronous motor, forming a compact axis module that mounts directly on the machine. In decentralized automation layouts, it generates torque, regulates speed, and exchanges status data without routing long motor cables back to a centralized cabinet. This arrangement reduces the amount of wiring between the control enclosure and each driven axis.

The drive accepts a bus supply of DC 750 V, so a shared DC link can feed multiple KSM axes from a single rectifier. Power, feedback, and brake lines are consolidated inside a hybrid connector, reducing the number of wiring points. Thermal losses are removed by natural convection, so no fans or liquid lines are required. Rotor position is monitored through a Hiperface encoder that delivers 128 signal periods per electrical revolution, while its multi-turn absolute capability retains position across power cycles. The optical scanning technology provides noise-resistant feedback across the controller bandwidth. Because the unit is supplied without a holding brake, stopping torque must be produced by the drive or an external clamp. Design version 1 and winding code 35 establish the operating characteristics for this KSM motor size.

Upstream fieldbus traffic moves through the Multi-Ethernet interface, which supports EtherCAT, SERCOS III, PROFINET IRT, and EtherNet/IP through network configuration. Mechanical power leaves the motor through a shaft with a keyway, and a factory-installed shaft seal helps prevent oil or dust from entering at the bearing lip. The integrated Safe Motion package provides monitoring functions without an additional safety braking channel, supporting controlled-stop functions in automated machinery. The Basic performance level provides the standard control functions required for general-purpose speed and position control. The standard design option omits specialized mechanical additions that are not required for this configuration.