Product Description:

The DKR03.1-W100B-BE43-02-FW is a drive controller built by Bosch Rexroth Indramat and placed in the DKR Drive Controllers series. As a Digital Intelligent AC Drive Controller, it coordinates high-power synchronous and induction motors in automated machine tools and handling systems where stable speed regulation and controlled acceleration are required. The unit combines line series 03 hardware with design version 1 electronics and incorporates function module 43 for monitoring and I/O tasks. By rectifying and modulating the incoming three-phase supply, it delivers variable voltage and frequency to the connected motor and routes regenerative energy to an internal brake resistor. Its control architecture is suited to applications that require consistent motor response over repeated production cycles.

Communication with upper-level PLCs occurs over the SERCOS interface, enabling deterministic setpoint and feedback exchange. The drive accepts a control voltage of AC 230 V ±10% for its logic circuits and a rated power supply of 3xAC 400 … 480 V ±10% for its power section. Under a switching frequency of 4 kHz, the converter can furnish a continuous current of 71 A, which corresponds to approximately 26 kW of mechanical shaft power. The current rating code 100 identifies the output class of the unit, while digital servo and resolver feedback inputs close the speed and position loop. A built-in air blower removes heat from the power stage during operation.

Regenerative energy is routed to an internal bleeder where a brake resistor can absorb up to 1 kW continuously and store a maximum of 150 kWs during a deceleration event. The integral blower keeps total controller heat dissipation at 900 W, helping the cabinet manage thermal load during sustained operation. All hardware, including the brake elements, is housed in an enclosure that weighs 49 kg. The enclosure contains the power electronics and braking components in one housing, which keeps the drive layout compact for cabinet mounting.