KSM02.1B-061C-35N-M3-HG2-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-35N-M3-HG2-ET-L3-D7-TO-FW servo drive is manufactured by Bosch Rexroth Indramat and belongs to the KSM Motor Integrated Servo Drives series. This motor-integrated unit combines a synchronous servo motor and drive electronics in a single housing. Its decentralized design allows installation close to motion axes in packaging, material-handling, and assembly lines, reducing the amount of wiring routed back to a central cabinet. Locating the power electronics near the motor also provides a compact arrangement for machines with multiple coordinated axes.

The drive has motor size 061, length code C, and a plain shaft fitted with a factory-installed shaft seal to limit lubricant loss. Power, control, and feedback lines are routed through a Hybrid Connector, reducing the number of separate connections required at the housing. Thermal dissipation relies on natural convection, so the mounting orientation must permit unobstructed vertical airflow around the unit. The internal inverter accepts a DC 750 V bus supply from a compatible central power source. Winding code 35 identifies the electromagnetic configuration used with this motor size and length. The integrated Safe Torque Off (STO) function disables torque-producing motor power without requiring external power contactors. A DC 24 V supply releases the electrically released holding brake, while removing power allows the brake to retain the shaft during idle periods. The unit has a Basic performance level, design version 1, and series 2 construction.

Motion commands and diagnostic data are exchanged over Multi-Ethernet, providing a common network connection for the decentralized drive. The communication system supports Profinet, EtherNet/IP, or EtherCAT, with the required protocol selected through drive parameters. Rotor position data are transmitted through the Hiperface serial interface for use by the internal position and speed control loops. The capacitive measuring system produces 16 signal periods per mechanical revolution, allowing the drive electronics to interpolate the feedback signal for precise motion control. Its capacitive scanning method tolerates dust and condensation that may be present around industrial machinery. The multi-turn absolute encoder retains position information across multiple shaft revolutions, allowing the controlled axis to resume operation after a power cycle without performing a homing move.