Product Description:

The DKR03.1-W200B-BE45-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat in the DKR Drive Controllers series. It belongs to line 03, uses design version 1, and includes function module version 01. The unit processes multi-kilowatt three-phase power and modulates it for servo and spindle axes in automated machinery such as machining centers, presses, and material-handling systems. Resolver and digital servo feedback inputs allow closed-loop control so position, speed, and torque follow programmed motion profiles accurately during synchronized machine movement.

At a switching frequency of 4 kHz, the controller supplies a continuous output of 92 A, enabling large motors to maintain rated torque without excessive heating. For short acceleration bursts, it can deliver up to 141 A to cover high-inertia loads and short-term demand peaks. The power section is fed from 3 x AC 400 to 480 V three-phase mains with a ±10% tolerance, while the logic circuitry runs on AC 230 V ±10%. Under these conditions, the inverter produces about 35 kW of continuous mechanical power. Motion commands reach the drive through a SERCOS interface that integrates with PLC platforms. The assembly has a nominal current rating of 200 A and weighs 49 kg, making it suitable for panel or cabinet mounting where stable mechanical support and clearance are available.

Regenerative energy is handled by an internal bleeder circuit that channels excess DC-link voltage into a brake resistor. This resistor supports 1 kW of continuous thermal loading and absorbs up to 150 kWs during rapid stops, helping protect the power stage during deceleration. Overall losses from switching devices and control electronics reach 1200 W, and heat is removed by a built-in air blower that moves air across the integral heat sink. The airflow path carries heat away from the power section and reduces the need for separate external cooling hardware.