Product Description:

The DKR03.1-W200B-BE24-02-FW is a digital intelligent AC drive controller built by Bosch Rexroth Indramat for the DKR Drive Controllers series. The unit converts plant three-phase power into regulated motor voltage and current while exchanging motion commands over a SERCOS fiber-optic link. In industrial automation, it is used to drive large servo axes, dissipate regenerative energy through an internal bleeder, and maintain closed-loop position and torque control during continuous production duty. This makes it suitable for demanding axis applications where stable current regulation and responsive feedback processing are required.

The drive operates from a three-phase input of 3xAC 400 to 480 V ±10%, which matches common industrial mains. At a carrier frequency of 4 kHz, it can deliver a continuous output of 92 A, and its peak capability rises to 141 A for short acceleration bursts. With these current levels, the inverter supports about 35 kW of mechanical power, while the integrated air blower removes up to 1200 W of converter losses. SERCOS fiber optics carry command data, and either digital servo feedback or resolver signals can close the control loop. The unit has a basic current rating of 200 A, and it is part of line 03 with design version 1. An internal bleeder diverts excess DC-bus energy into a dedicated resistor during braking.

For its auxiliary electronics, the controller requires a separate supply of AC 230 V ±10% so the control circuits and cooling fan can remain energized during standby. The built-in brake resistor can dissipate 1 kW continuously and can absorb up to 150 kWs of braking energy per stop, which helps prevent overvoltage during deceleration of heavy loads. The housing mass is 49 kg, so panel support and handling provisions should account for the unit's size. The air-cooled structure uses internal airflow and does not require external heat sinks. This layout supports enclosed control cabinets where high braking energy and sustained servo output are both required.