Product Description:

The DKR03.1-W200B-BA04-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat within the DKR Drive Controllers series. It is intended to operate high-power servo motors in production machinery, providing velocity and position regulation for demanding axis control. The unit is part of line 03, has design version 1, and uses function module version 01 for analog setpoint input. This makes it suitable for transfer systems, winding equipment, and other machines where large motors must respond smoothly to changing commands.

This controller runs from a three-phase supply of 3 x AC 400 to 480 V ±10%, while the logic section requires a separate AC 230 V ±10% source. At a switching frequency of 4 kHz, the power section supplies 92 A continuously and permits peak current of 141 A during acceleration or short overload periods. These electrical values support a continuous inverter output of 35 kW, making the drive suitable for axes with high torque demand. Separate control power allows the logic electronics to remain supplied independently of the main power stage during machine control sequences. Motor feedback can be accepted from digital servo feedback or resolver transducers, so closed-loop control can be implemented without an additional feedback interface card.

The braking section handles 1 kW of thermal load and can absorb up to 150 kWs during a single braking event, helping stabilize DC-bus voltage during rapid deceleration. A built-in blower removes the controller's 1200 W of heat loss, so external liquid cooling is not required. The heat must be cleared through cabinet airflow around the cooling path to maintain stable operation. With a mass of 49 kg, the housing should be mounted on a rigid panel or cabinet structure that can support the unit securely. The internal bleeder and brake resistor allow regenerated energy to be dissipated inside the controller, which is useful on high-inertia axes that return substantial energy while slowing down.