KSM02.1B-076C-35N-M1-HP2-ET-SD-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-076C-35N-M1-HP2-ET-SD-D7-TO-FW is a motor-integrated servo drive from Bosch Rexroth Indramat that belongs to the KSM Motor Integrated Servo Drives series. By combining a synchronous motor and drive electronics in one housing, it forms a decentralized motion unit that can position a single machine axis without a separate control cabinet inverter. This configuration reduces wiring length and simplifies installation in conveyor, packaging, or assembly systems that rely on distributed servo nodes.

A single hybrid cable enters the housing through a hybrid connector, carrying DC bus power, logic supply, and fieldbus signals to minimize cable runs on moving machinery. The device accepts a bus voltage of DC 750 V, allowing it to share a high-energy intermediate circuit with other drives on the same line. Rotor position data are transmitted through a Hiperface interface, and the optical encoder produces 128 signal periods per mechanical revolution to support precise velocity control. An electrically released brake engages when the external controller removes the release current. Its coil operates at DC 24 V, allowing the axis to hold load torque during power loss or an emergency stop.

Functional safety is implemented through Safe Motion capability, giving the drive support for safely limited speed and safe brake control without additional relays. Real-time data exchange with higher-level PLCs is handled by the integrated Multi-Ethernet interface, allowing the unit to join EtherNet/IP, PROFINET, or EtherCAT networks selected through the control software. Heat produced by the inverter stage is removed through natural convection, which eliminates fans and reduces maintenance in dusty work areas. Mechanical coupling to gearboxes or pulleys uses a shaft with a keyway, providing positive torque transfer through standard keyed hubs.