SAUTER AVM 234S valve actuator (with positioner)

Working principle and operating instructions

Work mode selection

Continuous drive: Connect 0... 10 V/4... 20 mA signals, set the running time through S1/S2, set the flow characteristics through S3/S4, automatically initialize (connect the valve stem to the lower limit of the valve before detecting and saving the stroke at the upper limit), feedback signal corresponds to the effective stroke (0... 10 V corresponds to 0... 100% stroke), no need to reinitialize after power failure.

2-point control (OPEN/CLOSE): Connected by 2 wires at 24 V, terminal 1+2a is powered on, terminal 2b is powered on at 24 V, and the valve stem extends. After power-off, it returns to the opposite terminal position, without feature selection. Terminal 3i/3u/44 is not wired.

3-point control (OPEN/STOP/CLOSE): At 24 V, terminals 2a/2b can be moved to any position when powered on, 1+2b can extend the valve stem when powered on, 1+2a can retract when powered on, and the wiring can be changed to change the direction of travel without feature selection. Terminals 3i/3u/44 are not wired.

230 V/100... 110 V drive: accessory 0372332 is required. The locator works according to the controller output signal. When both 3u (voltage) and 3i (current) signals are present, high values take priority; There are two operating directions (when the signal increases, the 2a power supply valve stem extends and the 2b power supply valve stem retracts), and a partial range can be set for the boost unit.

Initialization and fault handling

Reinitialize: When powered on and there is a continuous signal from 3u/3i, the crankshaft will be unfolded and retracted twice within 4 seconds, the LED will flash red, and the feedback signal during initialization will be 0. The process will be executed with the shortest running time, and the unfolding of the crankshaft can be interrupted. It will take effect after completion.

Jam handling: Upon detecting a jam, attempt to overcome it within 90 seconds. If unsuccessful, set the feedback signal to 0 V. Once overcome, restore normal control.

Meaning of LED indicator light

|LED Status | Meaning|

|Two lights flashing red | Initialization in progress|

|The red light on the upper light is always on | reaching the upper limit or "off" position|

|The red light under the lamp is always on | reaching the lower limit or "open" position|

|The green light on the upper light is flashing | The actuator is running and moving towards the "off" position|

|The green light on the upper light is always on | The actuator stops, and the last running direction was "off"|

|The green light under the lamp is flashing | The actuator is running and moving towards the "open" position|

|The green light under the lamp is always on | The actuator stops, and the last running direction was "open"|

|No light on | No power supply (terminals 2a/2b have no power)|

|Two lights flashing alternately in red and green | The actuator is in manual mode|

Installation and usage precautions

Installation requirements

Prevent condensation and dripping water from entering the actuator along the valve stem; The valve is directly screwed onto the actuator without additional adjustment, and the actuator stem is in the middle position when it leaves the factory.

Outdoor installation requires additional wind and rain protection; Multiple actuators of the same type can be connected in parallel, and the cross-sectional area of the power cord needs to be selected according to the length and quantity of the cable (such as 5 parallel actuators, 50 m cable, recommended 1.5 mm ²).

The actuator can accommodate up to one 230 V module, one auxiliary accessory (auxiliary contact/potentiometer), and one voltage divider unit.

Temperature related requirements

When the temperature of the valve medium is ≤ 110 ° C, the maximum ambient temperature is 60 ° C; when the temperature of the medium is>110 ° C, the maximum ambient temperature is 55 ° C, otherwise a high-temperature adapter (0372336180) needs to be installed.

Corresponding high-temperature adapters are required for medium temperatures of 180 ° C and above, and the actuator column and valve stem may become hot with the increase of medium temperature, requiring attention to protection.

Compliance and Security

Only for the manufacturer's designated use, modification is prohibited, and relevant product specifications must be followed; If the control unit malfunctions and may cause damage, additional protective measures need to be taken.

Attention should be paid to the rated parameters when using auxiliary contacts. For example, if the gold-plated contact 0372333002 is used once below 10 mA or above 50 V, the gold plating will fail and can only be used in higher rated scenarios.

Disposal

Compliance with current local laws and regulations is required, and material related information can be found in the product's "Material and Environmental Statement".

Size specifications

Actuator size (unit: mm)

|Model | a | b | c|

| AVM 234S F132 | 64 | 289 | 44 |

| AVM 234S F132-5 | 58 | 289 | 38 |

| AVM 234S F132-6 | 78 | 382 | 60 |

High temperature adapter size (unit: mm)