Product Description:

The DDS2.2-W025-B is a digital AC servo drive controller produced by Bosch Rexroth Indramat for the DDS Drive Controllers series. It receives command signals from higher-level motion controls and modulates three-phase power to servo motors, enabling closed-loop position, speed, and torque control in automated machinery. By combining control electronics and power conversion in a single chassis, the device reduces wiring complexity and helps conserve cabinet space on machines that require accurate, repeatable axis motion. This type of controller is typically used where a central PLC or CNC sends motion profiles and expects stable current regulation at the drive level.

Its thermal management relies on internal cabinet air cooling, so sufficient airflow inside the panel must be maintained for continuous operation at ambient temperatures up to 45 °C. The DC link is stabilized at 300 VDC, giving the power stage the voltage needed for steady motor control. A phase current ceiling of 25 A sets the motor size that can be connected without derating. Resolver or digital servo feedback is accepted through the DSF or RSF interfaces, allowing the controller to close precise motion loops. The controller uses a switching frequency of 4 kHz, balancing torque response with manageable electromagnetic emissions.

The logic section draws 500 mA from the 24 V control supply and 150 mA from each ±15 V rail, which helps size the supporting control power supply in multi-axis cabinets. An IP20 housing provides finger-safe protection, but the drive still requires installation in an enclosed rack to limit exposure to dust and moisture. Installation is permitted up to 1000 m elevation without output reduction. The unit mounts to the backplate with M6 screws tightened to 5 Nm, while the power terminals use M5 hardware tightened to 3 Nm. Storage temperatures from -30 °C to 85 °C help protect internal components during shipping and idle storage.