Product Description:

The CB03550 is a single-axis servo drive produced by Kollmorgen within the CD Servostar CD Drives series. As part of the Compact Drive family, it regulates brushless servo motors in tightly integrated industrial automation cells. Rotor position is read through a sine encoder feedback channel, enabling commutation without incremental sensors. By combining power electronics, control logic, and regeneration hardware in one frame, the drive supplies regulated current to the motor while protecting upstream supplies and downstream loads.

At nominal load, the drive delivers a rated phase current of 3 A and can sustain 6 Arms for two seconds or 9 Arms for 500 milliseconds to cover acceleration events. Motor voltage is switched at a pulse-width modulation frequency of 16 kHz, a rate that keeps current ripple low while avoiding audible noise. Internally, 60 W of resistive loss must be removed by panel ventilation. The power section is referenced to a 300 V logic rail, allowing the control electronics to ride through brief mains disturbances. An analog command interface accepts velocity or torque references and blends them with the encoder data to close precise current loops without relying on digital fieldbuses.

Protective thresholds limit fault energy during abnormal operating conditions. An overtemperature trip activates at 80 °C, while input undervoltage is detected below 90 VDC and overvoltage above 430 VDC. The DC link is centered on a 325 VDC regeneration bus; energy is diverted through a 20-ohm shunt when the link reaches the 390 VDC turn-on level and is disconnected once it falls to 370 VDC, preventing uncontrolled voltage rise. High-resolution commutation is enabled by interpolation to 4096 counts per electrical cycle, supporting smooth torque production across the speed range without additional sensors.