Aalborg SMV30-AVE4

<p><strong>Aalborg, SMV30-AVE4, Aluminum/Viton, Electronic Two-Way Metering Valve 500 L/Min, 24 VDC Power, 1/2" Compression Fitting </strong> </p> <p>SMV stepping motor valve for high flow regulation of gases or liquids </p> <p>Advantages over solenoid operated valves include cool operations, i.e. there are no control operating problems due to coils heating up, extremely fine resolution, very low differential pressures and high operating pressures. Valves are controllable by TTL compatible logic level and analog 0 to 5 VDC signals. </p> <p><strong>Operation </strong> </p> <ul><li>When the "Direction" is set Low (GND) the valve spindle travels downward (closes), when it is set High, the valve spindle moves upward (opens). The "Speed" voltage on pin 4 determines how quickly the valve opens or closes. The signal amplitude for the "Speed" control signal must remain within the limits of 0 to +5.0 VDC. It may be necessary to override "Direction" and "Speed" signals with the preset (2.75 VDC) speed control signal. </li> <li>During normal operation the valve remains in the last position as it is de energized. After powering up, the valve will be automatically closed within the first 10 seconds and after that resumes control operation. </li> <li>Operating power and valve control signals are supplied via the "D"-connector. </li> </ul>