STEPPING MOTOR VALVES Design Features High precision two-way metering valves in aluminum or 316 SS for air/water. Unparalleled precision and resolution in controlling flow rates (0.00025” per step resolution standard, 0.000125” optional). Operate continuously without overheating. Eliminates coil heating problems associated with solenoid designs. SMV Stepping Motor Valves SMV Stepping Motor Valves WWW.AALBORG.COM - E-MAIL ౧ : [email protected] - PHONE  845.770.3000 - TOLL FREE IN U.S.A. AND CANADA 1.800.866.3837  ORANGEBURG N.Y. U.S.A. control valve control valve

ALUMINUM MODELS: Operation 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 +2.5 Vdc. It may be necessary to override “DIRECTION” and “SPEED” signals with the preset (2.75 Vdc) speed control signal. This can be accomplished with valve CLOSE and PURGE control signals (open collector NPN compatible). In order to CLOSE the valve, pin 3...