Product Description:

The DKR02.1-W200B-BE30-01-FW belongs to the DKR Drive Controllers series manufactured by Bosch Rexroth Indramat. It is a digital intelligent AC drive controller that supplies regulated three-phase power and closed-loop control to high-torque servo or spindle motors. This allows current, speed, and position to follow commanded motion profiles during coordinated machine operation. The unit is used in automated machining centers, printing presses, and large handling axes, where it responds to commands from a higher-level CNC or PLC.

This controller is intended for mains supplies of 3 x AC 400 to 480 V, allowing direct connection to standard factory power grids within a ±10% tolerance. At a 4 kHz switching frequency, its power section can deliver a continuous output current of 120 A, while temporary overloads are handled by a peak capability of 141 A. With those current levels, the unit can sustain about 47 kW of continuous mechanical power for large-frame induction or synchronous motors. Internally, losses are removed by an air channel and a built-in blower, and the resulting thermal load is 1600 W. A fiber-optic command interface transfers setpoints and diagnostic data in real time, and dual-mode motor feedback accepts digital servo and resolver signals to close the velocity and position loops.

An internal bleeder circuit routes excess DC-link voltage into a brake resistor rated for 1.5 kW of continuous dissipation and capable of absorbing up to 240 kWs per braking event, so inertial loads can decelerate without external hardware. Communication is handled through the SERCOS interface, while the logic sections are powered from an isolated 230 V control supply. Installation space must account for the blower path, and the unit has a mass of 104 kg, so the cabinet structure must support that load with an appropriate vibration margin.