KSM02.1B-061C-61N-M3-HP2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The Bosch Rexroth Indramat KSM Motor Integrated Servo Drives series combines a servo motor and drive electronics in a single decentralized package. The KSM02.1B-061C-61N-M3-HP2-ET-L3-D7-NN-FW has a 061 frame and length code C. By embedding the controller on the motor, the unit shortens cabinet wiring and supports distributed axes for packaging, material-handling, and general automation tasks. This arrangement places motion control close to the driven load and reduces the number of separate components installed in the control cabinet.

Power is supplied from a direct-current link rated at DC 750 V, allowing connection to a shared regenerative bus without additional rectifiers. Thermal dissipation relies on natural convection, so the housing does not require an auxiliary fan. Control data and diagnostics travel over Multi-Ethernet; the drive automatically selects SERCOS III, PROFINET, or EtherNet/IP according to the network master. Rotor position is measured with a Hiperface encoder that provides 16 signal periods per revolution. Its capacitive sensing principle resists contamination and vibration, providing stable feedback for the servo loop. The unit also has winding code 61, a standard mechanical design, and design version 1.

An electrically released brake energized at DC 24 V secures the shaft when power is removed, which supports vertical axes and other loads that must remain stationary. Integrated functional safety is provided by the drive's Safe Torque Off (STO) circuit, which removes torque-producing energy while preserving communication. The performance classification is Basic, matching applications that require precise positioning without the higher peak currents of advanced variants. A hybrid connector combines power, feedback, and fieldbus connections in one plug, reducing the number of separate connection points. A keyed shaft provides positive engagement with a gearbox or coupling, while the shaft seal helps prevent contaminants from reaching the bearings. The unit is Series 2, indicating its electronics generation. Its multi-turn absolute encoder retains the shaft position after shutdown, allowing operation to resume without a homing cycle.