AVN 224S: SUT valve actuator with safety function

Product catalog summary

Energy Efficiency Improvement: The AVN 224S valve actuator improves energy efficiency through automatic valve adaptation, precise activation, and low operating noise.

Features:

Compatible with 2-way or 3-way valves (VUG/BUG and VUP) according to DIN EN 14597.
Supports constant output (0...10 V or 4...20 mA) and switching output (2-point or 3-point control).
Includes a safety function with a pushing force of 1100 N, available in normally closed (NC) or normally open (NO) versions.
Features a stepping motor with SAUTER Universal Technology (SUT) and electronic, force-dependent cut-off.
Automatic recognition of control signals, indicated by LEDs, and coding switches for characteristic and running time selection.
Automatic adaptation to valve stroke, with memory retention during power failures.
Manual adjustment via push-buttons and various adaptors for non-SAUTER valves.

Technical Data:

Power supply options: 24 V~ ±20%, 24 V= ±15%, 230 V~ ±15% (with accessories).
Power consumption: 10 W, 18 VA for 24 V; 11 W / 24 VA for 230 V.
Running time: Motor 2/4/6 s/mm, Spring 15...30 s.
Actuating power: 1100 N, with over 40,000 spring returns.
Ambient conditions: Temperature -10...55 °C, Humidity < 95% rh.

Construction:

Housing made of fire-retardant plastic, IP66 protection, and compliance with various standards (EMC Directive, Electrical safety, etc.).

Operation and Use:

Manual and automatic modes available, with emergency function priority.
Initialization requires manual activation, with feedback signal inactive during the process.
Safety function ensures actuator moves to end position during power failure or emergency.

Connection Options:

2-point, 3-point, or continuous activation with various voltage options.
Feedback signal and control signal adaptation based on effective stroke.

Accessories:

Includes split-range units, auxiliary contacts, potentiometers, and adaptors for various valve types.

Specifications: The controller operates on a power supply of 230 V or 110 V, with an accessory required for the latter. It is crucial to connect the neutral wire of the controller to the control voltage, and the neutral wire of the power supply should only be used for the module.

LED Indicators: Bi-colour LEDs (red/green) indicate various statuses in both automatic and manual modes, such as initialization, limit stops, actuator movement, and power supply status.

Split-range Unit: An accessory (0313529) allows for setting the starting point and control span using a potentiometer, enabling sequential or cascade operation of multiple control units. The input signal is converted to an output signal of 0...10 V.

Technical Information: The actuator housing contains the DC motor, electronic control unit, and maintenance-free gear unit. The actuator spindle and column are rust-proof, while other components are made of steel and die-cast aluminum.

Ambient Temperature Note: For media temperatures up to 110 °C, the ambient temperature can reach 60 °C. For media temperatures above 110 °C, the ambient temperature must not exceed 55 °C, necessitating the use of an intermediate piece accessory.

Auxiliary Change-over Contacts: Two types of auxiliary contacts are specified, with varying switch ratings and current capacities. The gold plating is eliminated if used in certain ranges, limiting future use to higher switch ratings.

Warnings: High media temperatures can cause actuator components to reach similar temperatures. Actuators with safety functions require regular operability checks. Additional protective measures are necessary if control unit failure could cause damage. Removing the spring from the device is prohibited due to injury risk.

Run Time and Connection: The document provides run time specifications for different stroke lengths and includes a connection diagram for various actuator models.

Dimension Drawing: Dimensions for different actuator types are provided, detailing measurements for specific models.

Accessories: Details on accessories, including dimensions and temperature specifications, are provided for specific models.

Catalog excerpts

AVN 224S: SUT valve actuator with safety function-1

Product data sheet AVN 224S: SUT valve actuator with safety function How energy efficiency is improved Automatic adaptation to valve, precision activation and high energy efficiency with minimal operating noise Features • Operation of 2-way or 3-way valves of type series VUG/BUG and VUP as per DIN EN 14597 • For controllers with constant output (0...10 V or 4...20 mA) and switching output (2-point or 3-point control) • Valve actuator with safety function (as per DIN 32730, DIN EN 14597) and pushing force of 1100 N, in normally closed (NC) or normally open (NO) version • Stepping motor with SAUTER Universal Technology (SUT) electronic control unit and electronic, force-dependent cut-off • Simple assembly with valve; spindle is automatically connected after control voltage is applied (patented system) • Automatic recognition of applied control signal (constant or switched); indicated by two LEDs • Coding switches for selecting characteristic and running time • Type of characteristic (linear/quadratic/equal-percentage) can be set on the actuator • Automatic adaptation to the valve stroke (min. valve stroke 8 mm, max. valve stroke 49 mm); the measured stroke is stored and is not lost in the event of a power failure • Direction of operation can be selected via screw terminals when making the electrical connection • Push-buttons on outside of housing for manual adjustment with motor cut-off and as trigger for reinitialisation • Numerous adaptors enable the unit to be fitted onto non-SAUTER valves • Maintenance-free gear unit made of sintered steel; gearbox base-plate made of steel • Spring pack and mounting column made of stainless steel; mounting bracket made of cast light alloy for valve fitting • Electrical connections (max. 2.5 mm2) with screw terminals • Three break-out cable inlets for M20 × 1.5 (2×) and M16 × 1.5 • Fitting vertically upright to horizontal, not suspended Technical data Power supply Power supply 24 V~ Power consumption Running time of motor Actuating power Number of spring returns Positional feedback signal Ambient conditions Admissible ambient temperature Admissible ambient humidity Spring return time equates to stroke of 14...40 mm and does not depend on set running time

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AVN 224S: SUT valve actuator with safety function-2

Product data sheet Construction Housing Two-part, yellow Housing material Fire-retardant plastic Standards and directives Type of protection Protection class Over-voltage categories Category IV, fluid group II, modules B+D Test marks Overview of types Type Actuator stroke Direction of operation of spring Spindle retracted Spindle retracted Spindle retracted Spindle extended AVN224SF132, -5, -6: Valve normally closed (NC) with: VUG, BUG (as per DIN 32730, DIN EN 14597); valve normally open (NO) with: VUP AVN224SF232: Valve normally open (NO) with: VUG, BUG; valve normally closed (NC) with: VUP...

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AVN 224S: SUT valve actuator with safety function-3

Product data sheet End stop (needed for V/BXD, V/BXE DN 15…50, V/B6 DN 15 with kvs ≤ 1 m3/h) Cable screw fitting M16 × 1,5 Cable screw fitting M20 × 1.5 SAUTER Satchwell VZF1727 mounting set Adaptor: Not needed for version AV*2*4SF132-6 Potentiometer 130 Ω: This potentiometer must only be used as a voltage divider. Description of operation After a restart or a start after triggering of the emergency function (terminal 21), a waiting time of up to 45 s elapses until the actuator is available again. Depending on the type of connection (see connection diagram), the actuator can be used as a continuous...

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AVN 224S: SUT valve actuator with safety function-4

Product data sheet Once the actuator is connected to the valve, the safety screw must be fitted in the locking ring. When the safety screw is fitted, a manual initialisation must be triggered. To do this, the two pushbuttons must be pressed for at least 5 s. The actuator then moves to the lower limit stop of the valve. Then it moves to the upper limit stop. The distance is measured and stored by a travel measurement system. The control signal and the feedback are adapted to this effective stroke. After a power failure or an emergency function, no re-initialisation is carried out. The values remain...

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AVN 224S: SUT valve actuator with safety function-5

Product data sheet Direction of operation 2 (mains power supply on internal connection 2b): When the positioning signal is increasing, the actuator spindle moves in. The starting point and control span are fixed. To set partial ranges, a split-range unit is available as an accessory (only for voltage input 3u) – see the split-range unit function – which is intended to be installed in the actuator. After the connection of the power supply and the initialisation, the actuator moves to every valve stroke between 0% and 100%, depending on the control signal. Thanks to the electronics and the travel...

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AVN 224S: SUT valve actuator with safety function-6

Product data sheet Auxiliary change-over contacts 0372333 001 Switch rating max. 250 V~, current min. 250 mA at 12 V (or 20 mA at 20 V) Switch rating max. 12...30 V=, current max. 100 mA Switch rating max. 250 V~, current min. 1 mA at 5 V Switch rating max. 0.1...30 V=, current 1...100 mA If it is used one time in the range up to 10 mA or up to 50 V, the gold plating is eliminated. The switch can then only be used for a higher switch rating. Warning • If there is a high media temperature in the valve, the actuator columns and the spindle can attain similarly high temperatures. • Actuators with...

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