Product Description:

The DKR03.1-W200Z-BE11-02-FW is a digital intelligent AC drive controller built by Bosch Rexroth Indramat within the DKR Drive Controllers series. The unit serves as the central power and motion module for supplying three-phase servomotors in automated machine tools and material-handling cells. By regulating current, voltage, and feedback data in real time, the controller delivers precisely modulated energy to maintain axis speed, torque, and position during demanding production cycles.

In Line 03, Version 1, the controller exchanges command and status telegrams through the SERCOS interface, a fiber-optic bus that synchronizes multiple axes with very low latency. At a 4 kHz pulse-width modulation frequency, it can deliver a continuous output of 92 A, which corresponds to 35 kW of mechanical power when used with compatible Indramat servomotors. The internal logic and I/O circuits are supplied by AC 230 V control voltage with a permitted variation of up to ±10% without loss of function. Thermal management relies on a built-in air blower, so separate cabinet ventilation ducting is unnecessary. A current rating index of 200 identifies the power section and is useful when selecting protective devices and conductors.

During short acceleration bursts, the drive can supply 141 A peak, which helps high-inertia loads reach set speed quickly while remaining within semiconductor limits. Power enters the DC link through a mains connection of 3 x AC 400 to 480 V with the same ±10% tolerance as the control supply, allowing the unit to operate on common industrial feeders. The blower removes 1200 W of waste heat, and that value should be considered in cabinet thermal planning. Digital servo and resolver feedback channels provide position verification independently of the command bus, and the controller has a total mass of 49 kg for mounting and handling considerations.