Product Description:

The DKR03.1-W200N-BE79-01-FW is a digital intelligent AC drive controller produced by Bosch Rexroth Indramat for the DKR Drive Controllers series. It belongs to line series 03, uses design version 1, and carries function module version 01. In typical use, it acts as the power stage between the automation controller and the motor, converting command data into regulated drive output. The controller communicates with higher-level automation over a SERCOS interface and supplies regulated current to large servo motors, making it suitable for machining cells, presses, and gantry systems that require precise closed-loop motion.

Electrically, the unit accepts a three-phase rated power input of 400–480 V AC ±10% and relies on a separate control supply of 230 V AC ±10%. A pulse-width-modulated bridge sustains a continuous output current of 92 A, which corresponds to roughly 35 kW of usable mechanical power when paired with the recommended motor. For rapid accelerations, the drive can deliver a peak current of 141 A, giving additional short-term torque capacity during demanding motion profiles. The separate control supply supports the control electronics independently of the main power section, while digital servo and resolver feedback channels close the current and velocity loops for stable motor response.

Thermal control is provided by a built-in air blower, and total heat dissipation is rated at 1200 W. Because the DC link has no brake chopper, regenerative energy must be returned to the mains or absorbed mechanically during deceleration of high-inertia loads. This is especially important in applications with frequent stopping or reversing. The steel housing weighs 49 kg, which gives the unit substantial mass for thermal buffering while still allowing installation in standard control cabinets.