Product Description:

The DKS01.1-W050A-DL04-01-FW is a digital servo drive produced by Bosch Rexroth Indramat within the DKS Intelligent Digital Servo Drives series. It serves as the closed-loop power stage for a single axis, converting three-phase mains power into controlled DC bus energy and modulated output for MDD series synchronous motors. By processing encoder feedback internally, the unit regulates acceleration, steady-state speed, and holding torque in packaging lines, gantries, and printing equipment. This arrangement supports repeatable motion on machines that require accurate axis response during frequent speed changes. The drive is intended for applications where the motor must respond quickly to command changes without losing positional stability.

Its regenerative circuitry supports a continuous bleeder load of 0.35 kW, allowing excess kinetic energy from rapid deceleration to be dissipated without external components. An internal DC link maintained at 300 V DC feeds the inverter section, while the front end accepts a mains supply of 3x 230 V AC from a 50/60 Hz network. The power stage is sized to deliver a peak phase current of 50 A, providing headroom for startup torque surges during demanding motion cycles. These electrical values set the compatible motor range and the upstream protection used in the control cabinet.

For short braking intervals, the resistor can absorb up to 9.4 kW peak, helping protect the DC link from overvoltage spikes generated during emergency stops. At maximum load, the drive electronics release only 305 W of heat, which helps when cabinet airflow is limited. Reliable operation is permitted at ambient temperatures up to 55 °C and elevations up to 1000 m, provided the convection paths remain clear. The housing has an IP10 protection class, so the unit must be mounted inside an enclosure; within that enclosure, it operates with a 4 kHz PWM carrier and draws 9.5 kVA at full load. Adequate enclosure airflow remains important during continuous operation.