KDA 2.1-050-3-DYS-U1

The Bosch Rexroth Indramat KDA 2.1-050-3-DYS-U1 spindle drive from the KDA Spindle Drives series delivers robust performance for industrial automation applications. This model features a maximum continuous current of 50 A and operates on a three-phase 230/400 V AC rated voltage, providing reliable power for precision spindle control. Internal cooling is handled by the included DYS blower unit, ensuring maintained thermal stability under heavy loads. The drive accepts a ±10 V analog reference for torque or speed regulation and supports SERCOS-compatible digital communication for coordinated multi‐axis motion. Weighing approx. 22 kg, the unit is designed for panel-mount installation in enclosed cabinets.

Detailed technical specifications underscore the versatility of the KDA 2.1-050-3-DYS-U1. It requires a control voltage of 24 V DC and features an internal auxiliary AC supply for the cooling fan input. The enclosure is rated IP10 for basic protection, with overall dimensions of approx. 390 × 140 × 380 mm (H×W×D). The drive supports a rated frequency of 50/60 Hz and maintains a DC bus voltage of 300 V. Speed commands are delivered via a digital 16-bit parallel interface, while the auxiliary encoder input accommodates resolver-based sensors. The standard operating temperature range is 0 °C to +45 °C, and the module is designed for upright mounting with specified ventilation spacing.

Operational features include integrated thermal sensors that trigger automatic shutdown upon overload. The transistor-based output stage provides smooth current amplification, and the system incorporates short-circuit response logic for protection. Position feedback is accepted from a resolver interface, and the drive’s built-in self-check routines continuously monitor voltage levels and internal malfunction signals. Analog wiring for torque and speed control allows simple connectivity to conventional controllers. External airflow is driven by a 230 V AC cooling fan, ensuring reliable heat dissipation over extended duty cycles.

System integration is streamlined for rack or panel assemblies in CNC machining centers and other industrial automation environments. Compatibility with Bosch Rexroth 2AD spindle motors enables master-follower configurations and C-axis indexing. The unit’s SERCOS digital communication interface supports coordinated motion and spindle orientation functions. The KDA 2.1-050-3-DYS-U1 is ideal for milling, turning, and grinding applications where precise, high-torque control is required.