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Electric actuator AT 3941 (100-800 Nm)

Electric actuator for on/off or control of ball valves, butterfly or where a 90° rotation is required.

Torque100 Nm to 800 Nm
Power supplyElectric 230V, 3x400V or 24VDC
ValvesAT3502, AT3507, AT3533S, AT3534S, AT3542, AT3547, AT3582, AT3585, AT3590, AT2282, AT 2310-2319, AT2270B

Variations

Article number Amount
AT 3941-10
AT 3941-10-POS
AT 3941-10-24VDC
AT 3941-10-POS24VDC
AT 3941-10-400V
AT 3941-10-POS400V
AT 3941-15
AT 3941-15-POS
AT 3941-15-24VDC
AT 3941-15-POS24VDC
AT 3941-15-400V
AT 3941-15-POS400V
AT 3941-25
AT 3941-25-POS
AT 3941-25-24VDC
AT 3941-25-POS24VDC
AT 3941-25-400V
AT 3941-25-POS400V
AT 3941-50
AT 3941-50-POS
AT 3941-50-400V
AT 3941-50-POS400V
AT 3941-80
AT 3941-80-POS
AT 3941-80-400V
AT 3941-80-POS400V

Product information

Range of Application

Weather-proof actuator for on-off or control of ball- and butterfly valves. Torque 45-150 Nm.

AMA-text

UEC.11 actuator for valve, electric, two-position, without spring return
Actuator Bernard Electrical AT 3900 for 90°. Maneuvering of ball-, butterfly- and plug valves.

Quality Assurance

CE-Marking


EC Directives 2004/108/EC, 2006 /95 /EC and fulfills the EN 61000-6-4, EN 61000-6-2, EN 60034-1 and EN 60529.

IP 67 rated.

Material Specification

Detail Material Surface treatment
1BodyAluminium Epoxy painted RAL 2010
2Cover Aluminium Epoxy painted RAL 2010
3Drive shaftSteelUntreated

Dimension and Weight

Actuator / Fig nrStandard drive socketABCWeight
3941-1018522529010
3941-1518522529010
3941-2522531532013
3941-5026035033015
3941-8026035033015
Measurements in mm, weight in kg. *Possible to get in different sizes.

Function and Design

Standard version
Reversible actuator in four sizes, for 0-90° movement, adjustable through a combination of cams, mechanical end stop and/or torque switch.

The acutator is a compact combination of electric motor with thermal overload protection and self-locking, permanently lubricated worm gear. Standard with manual emergency operation and position indicator.

The actuator mounting-dimensions in relation to the fittings are according to ISO 5211.

Design lifetime 20 000 cycles for On/Off or 300 000 starts for modulating. Tested according to EN 15714-2 class A and B

Standard perfomance

Standard performance
Motor dutyS4-30% ED. 12 (on/off), S4-50% ED. 12 (positioning/modulating)
EnclosuresIP68
Temperature -20°C to +60°C
Anti condensation heaterYes
Overload protectionThermostats

Permanently lubricated gear

Gear
Cable entries2 st.M20x1,5 for On/Off, 3 pcs for reglulating
End position switches250VAC-5A / 48VDC-2,5A
TorqueYes. 250Nm and above.
Terminal block8 connections

Installation

During all work with the actuator the power must be disconnected.
The actuator must be connected as per the wiring diagram.
Each actuator must be powered by individual switch or relay contact, minimum 16A,to prevent cross-feed between the actuators.
At outdoor installation, the actuator should be protected by a roof or cap, alternatively choose an actuator with protection class IP67.
Installation with motor downwards should be avoided.
Turn the valve with the control unit's hand wheel to centre position. See indication on top of device.
Always connect the heater.
Check that the actuator turns the valve in the desired direction.
The correct limit switch (open or closed) shall break the motor current.
Cable entries must comply at least to the lowest protection class of devices.
See the instructions for start-up , storage and maintenance.

Marking

Article number, manufacturer, serial number, voltage and current.
Wiring diagram is placed by the motor at delivery.

How to order

Example
AT394110, 15, 25, 30, 50 och 80
Fig. no.Size
Exemple: 3941-5 (On/Off, 50 Nm, 230V)
* 10, 15, 25 eller 50 depending on torque 100, 150, 250, 500 eller 800 Nm
* * Option (POS= Positioner 4-20mA eller 0-10V, or for fieldbus contact Armatec)