Product Description:

The DKR02.1-W300B-BE43-02-FW is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat for the DKR Drive Controllers series. In automated machining cells or large material-handling axes, it modulates three-phase mains power into regulated motor current while exchanging setpoints and status with higher-level motion controls. By combining high inverter capacity with regenerative handling and integrated brake circuitry, the unit supports precise velocity, torque, and position loops for synchronous or induction motors used in demanding industrial automation tasks. This arrangement allows one controller to manage acceleration, steady running, and deceleration within the same closed-loop platform.

The power section uses a rated supply of 3xAC 400–480 V ±10%, while the control electronics are fed by a separate AC 230 V ±10% input. At a switching frequency of 4 kHz, the drive sustains 141 A continuously, which corresponds to approximately 55 kW of output, and it can deliver up to 212 A during short acceleration peaks. With current rating code 300 and forced-air cooling from a built-in air blower, the assembly releases 1800 W of heat that must be removed from the cabinet. Command and diagnostic data are exchanged through a SERCOS interface, and the control loops can close on either digital servo feedback or resolver signals, allowing the controller to work with different motor feedback types.

An internal bleeder links directly to the brake resistor, which can dissipate a continuous 1.5 kW and absorb up to 240 kWs of braking energy during rapid deceleration, helping protect the DC bus from overvoltage. The product is design version 1 in line series 02 and uses function module 43. This combination identifies the controller within the product range and distinguishes it from other DKR variants. Despite its output capacity, the controller weighs 104 kg, so the enclosure must support the unit securely and provide adequate clearance around it.