Product Description:

The DKS01.1-W050A-RS01-03-FW is a digital servo drive manufactured by Bosch Rexroth Indramat as part of the DKS Intelligent Digital Servo Drives series. The device conditions three-phase mains power and generates current-controlled PWM outputs to run servomotors in automated handling, material forming, and machining equipment. By integrating drive intelligence with resolver feedback processing, it provides velocity and position regulation directly at the axis, reducing external controller load and supporting compact cabinet layouts in industrial automation.

During operation, the drive accepts a three-phase 230 V AC ±10% supply and rectifies it onto a 300 V DC bus that feeds the inverter stage. Continuous motion tasks are supported by a nominal output of 25 A, while transient moves such as acceleration or shock loading can be supplied with 50 A peak current for short intervals. Command signals are modulated at 4 kHz PWM, a switching speed that balances current ripple with semiconductor losses for smooth torque production. Resolver feedback can be routed up to 75 m through Indramat-specified cables without signal conditioning, enabling flexible cabinet placement relative to the machine.

The housing carries a IP10 protection class, so installation inside a closed control cabinet is required. Excess regenerative energy is handled by an internal bleeder that dissipates 0.35 kW continuously and up to 9.4 kW in short bursts, preventing DC bus overvoltage during braking cycles. Proper rating is maintained up to +55 °C with output derating and up to 1000 m altitude without derating, provided cabinet ventilation supports heat dissipation. A power loss of 305 W at maximum load should be considered when sizing enclosure airflow, and the Class F humidity rating applies during storage and service.