SAUTER Linear valve actuator AVM 234S series AVM234SF132

AVM 234S: SUT valve actuator with positioner

How energy efficiency is improved

Automatic adaptation to valve, precision activation and high energy efficiency with minimal operating

noise

Features

• Activation of 2-way and 3-way valves of the VQD/BQD and VQE/BQE series, as well as VUG/BUG,

VUS/BUS, VUP, V6R/B6R and VDL

• For controllers with constant output (0...10 V or 4...20 mA) or switching output (2-point or 3-point

control)

• 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 detection 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 stroke of the valve (min. valve stroke 8 mm, max. valve stroke 49 mm).

The measured stroke is saved and is not lost even in the event of a power failure

• Direction of operation can be selected via screw terminals when making the electrical connection

• Crank handle for external manual adjustment with motor cut-off and as trigger for a re-initialisation

• Numerous adapters enable the unit to be fitted onto non-SAUTER valves

• Power supply 230 V with module or direct connection for 24 VAC / 24 VDC; continuous activation

also admissible with 230 V

•Maintenance-free gear unit made of sintered steel; gearbox base-plate made of steel

•Mounting column made of stainless steel; mounting bracket made of cast light alloy for fitting the

valve

• Electrical connections (max. 2.5 mm²) with screw terminals

• Three pre-scored cable inlets for M20 × 1.5 (2×) and M16 × 1.5

• Fitting vertically upright to horizontal, not suspended

Connection with 230 V or 100…110 V as 2-point/3-point or with continuous activation of valve

actuator (accessory 0372332)

The built-in positioner controls the actuator depending on controller’s output signal y.

A voltage signal (0...10 V–) at terminal 3u or a current signal at terminal 3i serves as the control

signal. If there is a control signal on both terminals (3u (0...10 V) and 3i (4...20 mA)) at the same time,

the input with the higher value has priority.

Direction of operation 1 (mains power supply on internal connection 2a):

When the positioning signal is increasing, the actuator spindle extends.

Direction of operation 2 (mains power supply on internal connection 2b):

When the positioning signal is increasing, the actuator spindle retracts.

The starting point and control span are fixed. A split-range unit (only for voltage input 3u) designed for

installation in the actuator is available as an accessory for adjusting partial ranges (see split-range

unit function).

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 measurement system, no stroke is lost, and the actuator does not require periodic re

initialisation. When the end positions are reached, this position is checked, corrected if necessary,

and saved again. It is thus possible to operate multiple actuators of the SUT type in parallel. The

feedback signal y0 = 0...10 V corresponds to the effective valve stroke of 0...100 %.

If the control signal 0...10 V or 4...20 mA is interrupted with direction of operation 1. the actuator

spindle moves in completely, or moves out completely with direction of operation 2.

The coding switch can be used to set the characteristic of the valve. An equal-percentage or

quadratic characteristic can only be generated when the actuator is used as a continuous actuator.

Additional switches can be used to select the running times (with the 2-point, 3-point or continuous

functions).

Continuous actuation can also be used with a power supply of 230 V or 110 V (accessory required).

You must ensure that the neutral wire of the controller is connected to the control voltage. The neutral

wire of the power supply may only be used for the module.

LED indicator: The indicator consists of bi-colour LEDs (red/green).

Both LEDs flash red

Top LED lights up red

Bottom LED lights up red

Top LED flashes green

Top LED lights up green

Initialisation

Top limit stop or “CLOSED” position reached

Bottom limit stop or “OPEN” position reached

Actuator is running, moving to “CLOSED” position

Actuator is stopped, last direction of travel “CLOSED”

Bottom LED flashes green

Bottom LED lights up green

No LED lights up

Both LEDs flash red and green

Actuator is running, moving to “OPEN” position

Actuator is stopped, last direction of travel “OPEN”

No power supply (terminal 2a or 2b)

Actuator is in manual mode