Product Description:

The DKR03.1-W200Z-BE45-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat in the DKR Drive Controllers series. The unit converts bus commands into regulated three-phase output currents so it can operate high-power servo or spindle motors in machining centers, gantry systems, and transfer lines. By providing closed-loop torque and speed control from a single chassis, it serves as the central actuator interface for demanding industrial axes. It is suited for coordinated motion tasks that require stable current regulation during continuous production. This arrangement supports precise speed holding and repeatable torque response under changing load conditions.

The controller provides a continuous output of 92 A at a switching frequency of 4 kHz, allowing about 35 kW of mechanical power without thermal derating. Logic and fan circuits use a separate supply of AC 230 V ±10 %, while the power stage is fed with 3×AC 400–480 V ±10 % for motor excitation. During short accelerations, the current can rise to 141 A to support higher torque demand. Thermal energy is removed by a built-in air blower that forces cooling air across the heat sink. Command data arrive through the SERCOS interface, and rotor position is returned through digital servo or resolver feedback so current vectors can be updated every control cycle. The internal rating code 200 marks the power section size for heavy-duty motion tasks.

The controller dissipates 1200 W of heat, which must be considered in cabinet airflow planning and spacing between adjacent modules. Even with this loss level, the unit weighs 49 kg, so lifting equipment is appropriate during installation or removal. The mass also affects panel support requirements in large multi-axis cabinets. The drive is part of Line 03, and it uses design version 1 with function module version 01. These identifiers distinguish the installed revision within the series and help match the unit to compatible system documentation.