Product Description:

The DKR02.1-W300B-BE79-01-FW drive controller is produced by Bosch Rexroth Indramat. It accepts intermediate-circuit power from a supply unit and modulates it for three-phase servo and spindle motors. This makes it the active control stage for position, velocity, and torque regulation on machine axes that must start, stop, and reverse with tight timing. In automated machining centers, transfer lines, and packaging machines, the controller links the mechanical axis to a CNC or PLC so commanded motion can be translated into stable motor current. That closed-loop role helps the axis maintain repeatable movement when process loads change from one cycle to the next.

An internal bleeder transistor permits controlled energy dissipation, so the unit is equipped with a bleeder to help limit DC bus overvoltage during rapid deceleration. Command data reach the controller over the deterministic SERCOS interface, allowing synchronized operation on a fiber-optic ring and consistent timing between coordinated axes. Thermal management relies on air cooling with a built-in blower, and the fan moves heat away from the sink surfaces created by the power electronics during continuous operation. The power stage has a continuous current rating of 300 A, which suits demanding servo and spindle duties that require sustained output. Position loops use digital servo and resolver feedback, giving the controller the motor information needed to regulate speed and position when inertia or cutting load changes.

The unit is in Design Version 1. It uses Function Numeric Version 01. The product is part of Line Series 02 in the DKR Drive Controllers series.  The DKR02.1-W300B-BE79-01-FW is a premiere choice in drive control and is evidence of Bosch Rexroth Indramat quality.