KSM02.1B-071C-35N-S1-HP2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-S1-HP2-ET-L3-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat within the KSM Motor Integrated Servo Drives series. By combining a 071-frame synchronous motor and drive electronics in a single housing, it decentralizes axis control on production lines and packaging cells while reducing cabinet wiring. The unit receives DC power from a common supply and performs position, speed, and torque regulation locally. High-level motion commands are exchanged with the machine controller to coordinate the axis with other equipment.

The unit uses a hybrid connector that carries DC power, I/O signals, and network lines through one plug. Heat is removed through natural convection, so no fans or liquid cooling circuits are required. The unit has the standard design option and uses version 1 hardware. Its DC link accepts up to 750 V DC, while winding code 35 identifies the stator configuration selected for this motor. Control data are exchanged over Multi-Ethernet, allowing the control system to use EtherNet/IP, PROFINET, EtherCAT, or SERCOS III. Motor length C provides the active stack depth, and internal series 2 corresponds to the basic performance level. The shaft has a keyway for transmitting torque to the connected load, while a shaft seal helps prevent dust or fluid from reaching internal components during open-machine installation.

Position feedback is provided by a Hiperface optical encoder with a single-turn arrangement. The encoder produces 128 signal periods per revolution, giving the drive the rotor-position information needed for closed-loop motion control. An electrically released brake operates at 24 V DC and holds the shaft when brake power is removed. Drive-level safety is provided by Safe Torque Off (STO), which disables torque-producing power without requiring the DC link to discharge. This function allows the motor to stop generating torque while the drive remains connected to its power source.