KSM01.2B-071C-35N-M1-HG2-SE-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM01.2B-071C-35N-M1-HG2-SE-NN-D7-NN-FW is produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. This drive combines a synchronous servomotor and controller in one housing, reducing cabinet wiring in automated assembly stations, packaging lines, and handling axes. With motor frame size 071 and length code C, the device belongs to Series 1 and has a basic performance level. Its integrated design allows decentralized motion control through a common DC bus, simplifying installation in distributed machine layouts.

Power, control, and communication lines are routed through a single hybrid connector, so only one cable harness is needed between the drive and the machine bus. Heat generated by the embedded electronics is removed through natural convection; no fans are installed, which reduces maintenance requirements in environments with airborne particles. The internal inverter draws energy from a shared DC link operating at 750 V DC, allowing multiple KSM axes to run from the same supply. Position feedback is provided by a Hiperface encoder that combines absolute data with incremental tracks. The encoder uses optical scanning, retains multi-turn position information, and provides 128 signal periods per mechanical revolution.

Axis coordination is supervised through the deterministic SERCOS 2 (RS-422) master interface, which transmits setpoints and diagnostic data in a single loop. The integrated holding brake supports a fail-safe stop and is electrically released when motion is commanded. It clamps the rotor when control power is removed, while its coil operates at 24 V DC to match standard machine supplies. A plain shaft with a factory-installed seal transfers torque directly to a coupling while helping prevent lubricant and contaminants from reaching the bearing area. The unit uses the Standard design option, winding code 35, and design version 2.