KSM02.1B-071C-35N-M1-HP2-ET-L3-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-071C-35N-M1-HP2-ET-L3-D7-NN-FW is a motor-integrated servo drive built by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. It combines drive electronics and a permanent-magnet synchronous motor in one enclosure to provide decentralized speed and position control. This integrated arrangement reduces cabinet space and wiring length on conveyors, pick-and-place units, and other automated stations.

This unit relies on natural convection for thermal management, so no external fans or liquid circuits are required. The power stage is designed for a bus supply of DC 750 V, providing sufficient voltage for rapid acceleration. Commands and diagnostic data travel over a Multi-Ethernet interface that supports several real-time fieldbuses through a single port, simplifying network integration. Position feedback is processed through a Hiperface encoder link. The optical sensing system delivers 128 signal periods per revolution and provides multiturn absolute position tracking, allowing fine interpolation and full rotation counting after power loss. Motion can be disabled by the integrated Safe Torque Off (STO) circuit, which disconnects the gate drivers and supports functional safety without additional relays. The drive has a basic performance level, winding code 35, a standard design option, and design version 1.

A single-cable connection is provided through the hybrid connector, which routes power, network, and feedback conductors. The electrically released brake engages when control power is lost and uses DC 24 V actuation, securing vertical loads without motor current. The 071 frame designation and motor length C determine the electromagnetic stack and overall housing dimensions. A keyed output shaft transmits torque through a shaft with a keyway. An integral shaft seal helps prevent lubricant from escaping and protects the bearing area from contaminants. The unit belongs to Series 2 and uses a brake that is compatible with the STO circuit.