KSM01.2B-076C-35N-S1-HP2-SE-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM01.2B-076C-35N-S1-HP2-SE-NN-D7-NN-FW is a motor-integrated servo drive built by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By combining a synchronous motor, feedback, power stage, and motion control in one enclosure, the unit mounts directly on the machine frame and shortens cabinet wiring. It is intended for decentralized axes that need precise torque, position, and velocity control while keeping panel heat and space to a minimum.

The drive draws power through a hybrid connector that carries DC-link energy, control logic, and network signals in one molded plug, reducing separate cable runs. Its power stage accepts a nominal bus voltage of DC 750 V, letting the axis share a common supply with other high-speed drives on the machine. Command and diagnostic traffic pass over SERCOS 2 (RS-422), providing deterministic cycle times suitable for synchronized motion groups. Rotor position is measured by a Hiperface optical encoder configured for 128 signal periods, so the control loop receives fine angular resolution without complex interpolation. The feedback is single-turn, eliminating multi-turn counting where it is not required.

Thermal management relies on natural convection, so no fans are needed, and the sealed housing maintains ingress protection when mounted close to the process. An electrically released holding brake engages automatically upon power loss and is energized at DC 24 V to release the shaft during operation, providing security for vertical axes without an external brake. A positive drive connection is provided by the shaft with a keyway, and a shaft seal keeps lubricant in and contaminants out. The motor has size 076, length code C, and winding code 35, which provide torque capability suited to the basic performance level assigned to this device.