KSM02.1B-061C-61N-S1-HG0-ET-L3-D7-TO-FW by Bosch Rexroth Indramat

The KSM02.1B-061C-61N-S1-HG0-ET-L3-D7-TO-FW is manufactured by Bosch Rexroth Indramat as part of the KSM Motor Integrated Servo Drives series. It combines a synchronous motor, power electronics, and a fieldbus interface in one housing to simplify distributed machine layouts and eliminate long motor cables. Designed as a motor-integrated servo drive, the device draws DC-link energy from a common bus and positions loads with closed-loop accuracy in multi-axis automation lines. Its integrated arrangement reduces the amount of separate drive equipment required in a central control cabinet.

The power stage accepts a supply of DC 750 V, allowing it to share energy with other axis modules on the same rail. Power, signal, and safety wiring reach the unit through a single hybrid connector, minimizing the number of separate cable connections. Heat produced during operation is removed by natural convection, so the mounting orientation must leave free space around the cooling fins and no external fan is required. Rotor position is sent to the control loop through a Hiperface interface. The optical encoder provides 128 signal periods per revolution, supporting accurate feedback for point-to-point moves and electronic gearing. This feedback arrangement allows the controller to monitor rotor movement while regulating speed, torque, and position.

The drive provides functional safety through Safe Torque Off (STO), which removes motor torque without opening the main DC link when a protective circuit is triggered. Network communication and output coupling are handled through the Multi-Ethernet port, supporting EtherNet/IP, PROFINET, and EtherCAT topologies. Mechanical output is delivered by a plain shaft that mates with clamping couplings or pulleys without requiring a key. The encoder is a single-turn device, providing absolute position information within one mechanical revolution. The motor has size 061, length code C, and winding code 61. A shaft seal helps prevent coolant from entering the motor housing, while the Basic performance level identifies the available control capabilities. The product is design version 1 and is supplied without a holding brake, so vertical axes require an external clamping mechanism when power is removed.