Product Description:

The DKR02.1-W200B-BE37-01-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. The module controls high-power servo and induction motors, converting three-phase supply power into regulated output for speed, torque, and braking. By integrating motion control, braking management, and SERCOS communication, the unit serves as the central power stage in machining centers, material-handling axes, and other automated equipment. It is often installed in heavy-duty processing cells where rapid acceleration and regenerative braking are common during multi-shift production. Its control functions support coordinated motion on equipment that must maintain stable motor response under changing load conditions.

For the mains connection, the drive accepts a rated power voltage of 3×AC 400–480 V ±10 % and uses a control voltage of AC 230 V ±10 %. Command and feedback are handled through the SERCOS interface with digital servo or resolver signals, allowing the controller to coordinate motor operation with the surrounding automation system. At a 4 kHz switching frequency, the inverter supplies 120 A continuously and tolerates peaks of 141 A during acceleration. The continuous current value supports sustained duty, while the peak value allows brief overload during ramp-up and other dynamic motion changes. This operating range supports about 47 kW of continuous mechanical output, which places the unit in the class used for large, high-demand drive axes. The current rating 200 suits large motors, while design version 1 in Line 02 and function module version 01 identify this controller variant.

Braking energy is managed by an integrated internal bleeder that routes excess DC-bus energy into a brake resistor rated for 1.5 kW continuously and 240 kWs during fast stops. Heat is removed by a built-in air blower, and total power loss is 1600 W, which should be considered in panel ventilation and thermal layout. The drive weighs 104 kg, so the cabinet structure must support the unit securely together with the connected cables. This internal braking arrangement is suited to applications with frequent stopping and repeated energy dissipation during deceleration.