The YEPEF 2SDQ(B) series non-intrusive quarter-turn valve electric actuators were developed on the basis of imported German Siemens technology for the open/close and modulating control of quarter-turn valves — butterflies, balls, dampers and louvers. They serve power stations, petrochemical, water supply and drainage, shipbuilding, and municipal engineering; the explosion-proof versions work in Class Ⅱ A/B, temperature groups T1~T4 explosive-gas atmospheres.

Key features

1. Compact, small and light — die-cast high-strength aluminum-alloy housing;

2. Fully automatic hand/electric changeover;

3. Mechanical torque protection and mechanical limits;

4. Non-intrusive design — user commissioning without removing covers;

5. Single-turn absolute Hall sensor for precise positioning and travel control;

6. High-contrast OLED display with full Chinese dialogue menus;

7. Phase-sequence adaptive — free setting of rotation direction, automatic power-phase correction;

8. Loss-of-phase protection for power and output;

9. Infrared remote control for commissioning, operation, and parameter browsing in confined locations;

10. Free configuration of up to 6 contact signals, each freely assignable;

11. Powerful fault self-diagnostics and operating-data logging.

Technical parameters

For selection and quotation of the 2SDQ series, feel free to contact us. (Compiled from public industry sources.)