KSM02.1B-041C-42N-M1-HG2-ET-SD-D7-NN-FW by Bosch Rexroth Indramat

The KSM02.1B-041C-42N-M1-HG2-ET-SD-D7-NN-FW is a motor-integrated servo drive produced by Bosch Rexroth Indramat for the KSM Motor Integrated Servo Drives series. By combining power electronics, control functions, and an AC synchronous motor in one housing, the unit provides closed-loop motion for packaging machinery, handling axes, and compact assembly stations. It mounts directly on the machine frame, reducing cabinet wiring and allowing distributed servo control within an Ethernet-based automation topology. This arrangement places the drive electronics close to the motor and shortens the connections required between components.

Power for the drive stage is delivered through a hybrid connector that carries DC power, control signals, and fieldbus communication through a single connection, minimizing separate cable runs in modular machines. The inverter section operates from a 750 VDC supply, allowing it to connect to a common intermediate circuit shared by multiple axes. Heat is dissipated through natural convection, eliminating the need for fans or liquid-cooling lines. Position feedback is supplied by an optical Hiperface encoder that sends absolute position data to the control electronics. Its encoder ring generates 128 signal periods per revolution, giving the controller detailed angular information for velocity, position, and torque regulation. Absolute feedback also allows the controller to identify the rotor position after startup without requiring a separate homing cycle.

Real-time coordination with higher-level controllers is handled through Multi-Ethernet communication, which supports several industrial Ethernet protocols without requiring different communication hardware. Axis safeguarding relies on Safe Motion with SBC; the integrated logic monitors speed and position and can initiate controlled stops when operating limits are exceeded. A mechanically mounted electrically released holding brake operates from 24 VDC and secures vertical loads when electrical power is removed. The plain output shaft includes a positive shaft seal that helps protect the motor bearings from external contaminants. The unit has motor size 041, length C, and winding code 42. It is configured with the Basic performance level, Design Version 1, and the Standard option.