| AVF 125S: Valve drive with spring return (SUT)
How energy efficiency is improved
Electric cut-off and auto-adjustment to save energy.
Areas of application
Actuation of through and three-way valves in the VXN/BXN, VUD/BUD and VUE/BUE, DN15 to DN50 series. For controllers with continuous output (0 - 10 V) or switching output (2-point or 3-point control).
Properties
- Actuator with spring return and pushing force of 500 N
- The return spring moves the actuator back to a pre-determined end position in the event of a power failure or the power being switched off or whenever a limiter is activated
- Two versions; NC closes the valve, NO opens the valve if the spring is activated
- Stepping motor with SUT (Sauter Universal Technology) electronic control unit and electronic load-dependent cut-off
- Automatic detection of control signal applied (continuous or switching)
- The type of characteristic curve (linear, quadratic or equal percentage) can be adjusted in the drive
- Direction of travel can be selected via screw terminals when making electrical connection or remotely
- Coding switch for selection of characteristic and running time (60 or 120 sec.)
- Maintenance-free gearbox and holding magnet
- LED display
Technical description
- 24 V~ power supply
- Two-part housing made of self-extinguishing plastic, lower section black, cover transparent
- Body of gearbox and mounting bracket for fitting valve made of cast zinc
- Electrical connections (max. 1.5 mm²) with screw terminals
- Cable entry M20 × 1.5
- Installation position: vertical to horizontal, but not upside down
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