Product Description:

The DKR03.1-F200 is a digital intelligent AC drive controller manufactured by Bosch Rexroth Indramat within the DKR Drive Controllers series. As a closed-loop power stage, it converts incoming electrical power into regulated three-phase output for high-inertia servo axes used in presses, gantry drives, and heavy material-handling stations. Integrated monitoring and parameter memory support coordinated multi-axis automation and help the controller maintain stable operation during changing load conditions.

During continuous operation at a 4 kHz switching frequency, the drive can supply 92 A of output current, which corresponds to approximately 35 kW of mechanical power when it is matched with suitable motors. Short-term overloads are handled by a peak capability of 141 A, so the controller can support fast acceleration and brief load surges without immediate current limiting. Thermal management is handled through liquid cooling, and the internal coolant channels carry heat away from the power section before it raises cabinet air temperature. The device name includes a 200 A nominal rating, which is useful when selecting upstream protection and conductors. Even with the cooling circuit, residual losses amount to 1200 W, so the enclosure still needs heat removal for dependable operation.

The control electronics are energized from a separate AC 230 V source with a tolerance of ±10%, while the power section accepts a three-phase utility feed of 3xAC 400–480 V within the same tolerance range. The unit belongs to line series 03 and uses design version 1. Cabinet layouts must also account for a transport mass of 49 kg, which affects panel support and handling during installation. The liquid-cooled heat exchanger must be mounted so coolant flow remains unrestricted, because blocked flow will reduce heat removal from the drive. This arrangement is useful in enclosures where heat needs to be carried away by coolant instead of being released mainly into the surrounding air.