Product Description:

The DKR02.1-W200B-BE56-01-FW is a Digital Intelligent AC Drive Controller produced by Bosch Rexroth Indramat in the DKR Drive Controllers series. It converts supply power into controlled motor current for high-power servo and spindle motors in automated machining cells and transfer lines. The controller belongs to line 02, is version 1, and uses function module version 01. Dual-channel feedback from digital servo encoders and resolver devices supports precise velocity and position regulation. An internal bleeder circuit dissipates regenerated energy during deceleration, and a built-in blower provides forced-air cooling inside the housing.

The drive connects to higher-level PLCs through a SERCOS interface, allowing cyclic command and status exchange. Its power stage operates from 3 x AC 400 to 480 V with a permissible tolerance of ±10%, and the logic circuits use a control voltage of AC 230 V ±10%. At a switching frequency of 4 kHz, the unit delivers a continuous output current of 120 A and can provide up to 47 kW of mechanical power at the motor shaft. Current rating 200 corresponds to the thermal design of the power section under sustained loading. Digital processing helps maintain stable torque when ambient temperatures change and when the load varies during operation.

An internal brake resistor can absorb 1.5 kW continuously and store up to 240 kWs of braking energy during repetitive stops. For short acceleration bursts, the inverter supplies a peak current of 141 A, giving the machine additional torque for cutting or indexing tasks. Total internal losses reach 1600 W under rated conditions, so cabinet ventilation must remove this heat from the enclosure. Despite its power, the assembly weighs 104 kg, which supports installation on standard backplanes. The internal energy handling and cooling arrangement allow the controller to work in large multi-axis systems without requiring an external brake resistor for routine deceleration.