KSM02.1B-071C-35N-M1-HP2-ET-NN-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-M1-HP2-ET-NN-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. Combining a permanent-magnet synchronous motor with an onboard inverter, it supplies closed-loop motion without a separate panel-mounted drive. This arrangement reduces wiring, frees cabinet space, and places power electronics close to the load, making the unit suitable for modular machine axes and compact handling stations in industrial automation.

The axis is powered from a DC 750 V intermediate circuit, so it connects directly to high-voltage DC busbars that feed multiple drives from a common rectifier. All power, signal, and safety conductors reach the unit through a single hybrid connector, minimizing field-side cabling and simplifying installation. Heat produced by switching devices is removed through natural convection, eliminating the need for fans or liquid cooling and allowing installation in sealed enclosures when sufficient airflow is available around the housing. For real-time control integration, the servo accepts commands through Multi-Ethernet ports, supporting several Ethernet-based fieldbuses that can be selected for the control system. An electrically released brake provides axis holding, so spring force clamps the shaft whenever control power is lost.

Rotor position feedback is transmitted through the Hiperface protocol. The optical measuring system resolves the code disk into 128 signal periods per revolution, providing precise velocity and position data across its multi-turn absolute range. The brake coil is energized at DC 24 V, permitting direct connection to common control supplies without a separate converter. Mechanical output is delivered through a shaft with a keyway, providing positive torque transfer to couplings or pulleys. A shaft seal protects the internal bearings from coolant and dust ingress. The motor has a size of 071, a length of C, and a winding code of 35, which establish the electromagnetic stack used for its continuous torque and speed capability.