Product Description:

The DKR02.1-W200N-BE11-02-FW drive controller is manufactured by Bosch Rexroth Indramat and belongs to the DKR Drive Controllers series. It belongs to the digital intelligent AC drive controller product group and is intended to run large synchronous or induction servomotors in machining centers, press lines, and material-handling gantries. By converting a three-phase power bus into precisely metered motor currents, the device enables coordinated torque, velocity, and position control across multiple axes inside automated production cells.

The controller exchanges setpoints and status data over a SERCOS interface, allowing deterministic communication with motion controllers. Under a 4 kHz switching frequency, it can deliver a continuous phase current of 120 A, which supports dynamic motion on high-inertia loads. At the same frequency, its power section sustains 47 kW of continuous mechanical output when paired with compatible motors. Internal logic and I/O are supplied from a separate AC 230 V control circuit, isolated from the main power bus. Thermal energy generated by the IGBTs is removed through air cooling with a built-in blower, and the residual losses reach 1600 W during rated operation, a value that must be considered when sizing cabinet ventilation.

The power stage is fed by a three-phase supply of 3 × AC 400 – 480 V ±10%, and the DC link is rigid because the design omits a bleeder and brake chopper. During rapid accelerations, the drive can reach a peak output current of 141 A without exceeding its semiconductor limits. The unit uses current rating code 200, design version 1, and line series 02. Feedback evaluation supports digital servo signals as well as resolver tracks, so a single controller can run different motor families. Overall mass is approximately 104 kg, and the integral blower eliminates the need for an external cooling system.