Product Description:

The DKC05.3-040-7-FW is a drive controller produced by Bosch Rexroth Indramat for the DKC Drive Controllers series. It works as the closed-loop power stage between EcoDrive-compatible servo motors and higher-level motion commands, converting incoming DC energy into controlled three-phase output for positioning, velocity regulation, and torque control. In service, the unit helps the motor follow changing command values with the stable current control needed for repeatable motion. This makes it suitable for automated machinery, transfer systems, indexing equipment, and other axes that depend on accurate servo response.

The unit connects to a common DC bus rated at 700 V, which suits shared multi-axis power systems used in centralized drive cabinets. Under continuous duty it can supply up to 40 A of regulated motor current, while the supply side draws no more than 16 A at peak line conditions. Internal switching and control losses total 180 W, so enclosure airflow must remove a moderate amount of heat during operation. The controller is classified as an EcoDrive, meaning it is intended for the EcoDrive platform and can work with bus-based energy sharing during dynamic motion. This operating profile fits servo axes that need steady continuous current and predictable thermal behavior.

The controller uses design code 3, which sets the enclosure style and mounting footprint for compact control cabinets. Communication, parameter loading, and diagnostics are provided through Interface Option 05, which supports the standardized SERCOS fiber-optic link used across the series for real-time command exchange. Continuous operation is permitted in ambient air up to 45°C without derating, making the unit suitable for enclosed machine frames that do not use active cooling. With a mass of 5.7 kg, the device can be mounted on DIN rails or plate adapters without requiring unusually heavy support hardware.