KSM02.1B-041C-42N-M3-HP2-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M3-HP2-ET-L3-D7-TO-FW is manufactured by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By combining a permanent-magnet motor with an onboard inverter, the unit eliminates long motor cables and places closed-loop motion control directly on the machine frame. The assembly is intended for decentralized automation where space in the main electrical cabinet is limited and rapid network integration is required. Its integrated design reduces the number of separate drive components that must be installed in the central cabinet.

The drive accepts a supply of DC 750 V through a single hybrid connector that carries power, signals, and brake lines in one molded interface. Heat generated by the inverter stage is dissipated by natural convection, so no external fans are needed. Position feedback is delivered over a Hiperface link. The capacitive multi-turn encoder provides 16 signal periods per revolution for precise commutation and absolute position tracking after power-up. Functional safety is provided by Safe Torque Off (STO), allowing motor torque to be disabled without disconnecting the DC bus. The motor has a size 041 frame and frame length C. Its shaft has a keyway and a shaft seal that helps prevent lubricant from entering the stator cavity.

Communication and drive expansion rely on Multi-Ethernet connectivity, which supports several real-time protocols through an RJ45 port. A daisy-chain output is available through the Multi-Ethernet output coupling option, allowing additional network devices to connect in sequence. The holding brake is electrically released and operates at DC 24 V. It clamps the rotor when its electrical supply is removed, helping restrain the connected load while the motor is not producing torque. Winding code 42 corresponds to the stator resistance and inductance used with the drive's basic performance level. The unit is design version 1 and belongs to series 2. Its capacitive encoder retains multi-turn position information, allowing the control system to recover the absolute axis position after a power cycle without requiring a new homing movement.