KSM02.1B-061C-61N-S1-HG2-ET-S3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-61N-S1-HG2-ET-S3-D7-NN-FW is a motor-integrated servo drive developed by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. As an all-in-one unit, it combines power electronics, feedback, and a 061-frame synchronous motor in one housing, providing decentralized axis control for machinery that requires minimal cabinet wiring. Within its C-length stator stack, the drive executes motion profiles directly at the axis. This arrangement is suitable for packaging, assembly, and material-handling stations that require precise position and torque regulation through a distributed control architecture.

Power is supplied from a bus rated at DC 750 V, so the axis can connect to a common converter without requiring its own rectifier stage. Signals and power share a single hybrid connector, reducing the number of installation points and maintaining shield continuity. Heat produced by the inverter is removed through natural convection. No fans are included, so the installation must provide enough airflow and clearance for passive heat dissipation. Network control is handled by a Multi-Ethernet interface that accepts Sercos III, EtherNet/IP, EtherCAT, and PROFINET commands. Rotor position data reach the drive electronics through a Hiperface encoder interface, which supports absolute position initialization after power-up. The unit follows design version 1, uses the standard mechanical option, and has a Basic performance level within Series 2. Its winding code is 61, which is suited to medium-torque applications.

The optical single-turn scanning system provides 128 signal periods per revolution, giving the control loop precise rotor position information. Position holding after power removal is managed by an electrically released brake energized at DC 24 V. When voltage is removed, the spring mechanism engages the brake and holds the rotor, while the integrated shaft seal protects the bearing area from contaminants. Functional safety is provided by Safe Motion without SBC, allowing certified monitoring of velocity and position without an external relay module. Mechanical energy is transmitted through a plain shaft, which supports direct connection to a suitable clamping coupling. This shaft arrangement avoids the need for a keyway and keeps the output interface compact for installation within the 061-frame envelope.