Product Description:

The DKR02.1-W200N-BE76-01-FW is an AC drive controller manufactured by Bosch Rexroth Indramat within the DKR Drive Controllers series. As a digital intelligent AC drive controller, it supplies regulated three-phase power and closed-loop command execution for large servo motors in automated production cells, machine tools, and handling systems. The unit interprets high-speed network commands, converts line energy into controlled motor current, and supervises feedback to maintain precise velocity and torque.

Its communication layer is based on the SERCOS interface, allowing deterministic cycle times and standardized parameter sets between the controller and a PLC. Under a 4 kHz switching frequency, the power section can deliver a continuous motor phase current of 120 A, which corresponds to approximately 47 kW of mechanical drive power for sustained duty. Internal logic and I/O are supplied by a 230 V AC control voltage that tolerates ±10% deviation, ensuring stable electronics even on fluctuating utility lines. Thermal energy is removed by a built-in air blower, so cabinet airflow is maintained without external heat exchangers while the onboard fans respond to temperature sensors.

The power stage connects to a mains supply of 3 x AC 400 to 480 V ±10%, matching common industrial feeders and allowing worldwide installation without transformer adaptation. For acceleration bursts, the drive can output a peak phase current of 141 A, giving extra torque headroom before reaching its programmed current rating of 200 A. Total losses appear as 1600 W of heat that must be removed by the cabinet ventilation path. Mechanical integration is planned around its steel enclosure, which weighs approximately 104 kg, and the rigid DC-bus design omits a brake chopper to simplify wiring of external dynamic resistors.