CONTROL TECHNIQUES DIGITAX Servo Drive

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Digitax Servo Drive – Control Techniques DBE 420

The DBE 420 is an AC digital servo drive (“Digitax AC Digital Servo Drive”) manufactured by Control Techniques, part of the DIGITAX family for controlling AC brushless servo motors in motion control and CNC machine tool applications. The unit operates as a closed-loop digital servo amplifier, regulating speed, torque and position while interfacing with the CNC controller via fieldbus and encoder feedback. The designation DBE 420 identifies the size and variant within the DIGITAX catalogue; the product may exist in multiple hardware and firmware revisions.

The DIGITAX DBE 420 servo drive is the electronic controller that closes the current, speed and position loops on the servo axis: it interprets the CNC references in real time and compensates for load disturbances, maintaining axis precision and dynamics throughout machining. A drive failure renders the controlled axis completely inoperative, halting production; loss of closed-loop control can result in mechanical collisions or dimensional rejects in the workpiece.

Control Techniques is a British manufacturer and world leader in variable-speed drives and servo systems, founded in 1973 in Newtown (Wales, UK). Acquired by Emerson Electric in 1990 and subsequently by Nidec Corporation in 2017, it produces the Unidrive, Commander and DIGITAX servo drive families. Products in the DIGITAX DBE series are legacy / discontinued: available exclusively as used stock, NOS surplus, or through specialist repair services.

Main Technical Specifications