Product Description:

The DKS1.1-W030B-RA01-0 is a digital servo drive produced by Bosch Rexroth Indramat and is part of the DKS Intelligent Digital Servo Drives series. The unit functions as the power and control interface between an automation controller and a regulated servo motor. By converting the incoming AC supply into a controlled PWM output, it supports position, speed, and torque loops without external amplifiers, making it suitable for packaging lines, handling equipment, and general motion axes. It integrates control electronics and the power stage in a compact housing for control cabinet installation.

When powered from a single-phase source, the drive accepts 1 x 230 V AC and supports a continuous motor current of 10 A. In three-phase installations, it accepts 3 x 230 V AC and maintains 15 A of continuous output current. A rated peak current of 30 A is available for acceleration or sudden load changes. The associated power demand reaches 3.5 kVA on one phase and 4.5 kVA on three phases. The internal bleeder resistor dissipates 0.3 kW during routine braking and can handle up to 5 kW during short energy surges. Resolver (RSF) feedback is processed through an incremental encoder emulator to support closed-loop control.

An isolated DC bus of 300 V links the power stage to the brake chopper and helps stabilize link voltage during regeneration. The pulse-width modulation inverter switches at 18 kHz, reducing audible noise and smoothing current waveforms. Thermal design permits continuous operation up to +55 °C before derating becomes necessary. During motoring, the drive releases only 230 W of heat on a three-phase supply, which helps reduce cabinet cooling demand. The analog command interface supports retrofits that still rely on ±10 V references, and the resolver channel maintains stable control in electrically noisy environments.