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Electric fail safe actuator AT 3930, 3931 (40-500 Nm)

Can be installed on all 90° rotating valves with torque up to 500 Nm. In case of power failure, the actuator closes or opens the valve by the means of a spring kit.

Torque40 Nm to 500 Nm
DrivenElectric

Variations

Article number Performance Control signal/Communication Torque (Nm) Power supply Amount
AT 3930-4-4A3A Electric Fail Safe NC On/Off 40 230V
AT 3930-4-4A3C Electric Fail Safe NC 4-20mA 40 230V
AT 3930-4-3A0A Electric Fail Safe NC On/Off 40 24VDC
AT 3930-8-4A3A Electric Fail Safe NC On/Off 80 230V
AT 3930-8-6B0A Electric Fail Safe NC On/Off 80 24VDC
AT 3930-12-10B3A Electric Fail Safe NC On/Off 120 230V
AT 3930-12-11B0A Electric Fail Safe NC On/Off 120 24VDC
AT 3930-18-10B3A Electric Fail Safe NC On/Off 180 230V
AT 3930-18-10B4A Electric Fail Safe NC On/Off 180 3x400V
AT 3930-18-12B0A Electric Fail Safe NC On/Off 180 24VDC
AT 3930-30-13D3A Electric Fail Safe NC On/Off 300 230V
AT 3930-30-14D0A Electric Fail Safe NC On/Off 300 24VDC
AT 3931-4-4A3A Electric Fail Safe NC On/Off 40 230V
AT 3931-4-4A3C Electric Fail Safe NC On/Off 40 230V
AT 3931-4-3A0A Electric Fail Safe NC On/Off 40 24VDC
AT 3931-8-4A3A Electric Fail Safe NC On/Off 80 230V
AT 3931-8-6B0A Electric Fail Safe NC On/Off 80 24VDC
AT 3931-12-10B3A Electric Fail Safe NC On/Off 120 230V
AT 3931-12-11B0A Electric Fail Safe NC On/Off 120 24VDC
AT 3931-18-10B3A Electric Fail Safe NC On/Off 180 230V
AT 3931-18-10B4A Electric Fail Safe NC On/Off 180 3x400V
AT 3931-18-12B0A Electric Fail Safe NC On/Off 180 24VDC
AT 3931-30-13D3A Electric Fail Safe NC On/Off 300 230V
AT 3931-30-14D0A Electric Fail Safe NC On/Off 300 24VDC

Product information

Range of application

Can be installed on all 90° rotating valves with torque up to 500 Nm. In case of voltage failure, the actuator closes or opens, depending on the desired function, the actuator by means of a spring package.

Quality assurance

CE marking

Follows validated ECC and EU standards

Material specification

DetailMaterial
Body

IP67- light metal construction

A spring assemblyIP65-diecast, zinc, epoxi-painted
End point switches4st SPDT contacts
Thermal overload protectionThermostat (110°C)
Electromagnetic relay21W, 230VAC
Hydraulic damperStandard (surppressesbacklash )
Mechanical stops2st (adjustable +/-2 °
Hand wheelFree range (Not included in FQ04-FQ08)
Cable connection2st M20
Ambient temperature-20°C to 70°C

Dimension and weight

TypeAØBØChDEØFMWeight
FQ 0438984171925
FQ 0838984171925
FQ 12502151252522102M1040
FQ 18521185130312578M1245
Dimension in mm, weight in kg.

Function and design

90° rotary electric actuator type FQ with "fail-safe" function, is a compact and robust combination of self-locking worm gear, electric motor, magnetic coupling with hydraulic damper and spring unit. The FQ actuator's "fail-safe" function is available via a magnetic clutch. With the tension spring, the actuators can act as a "normal" actuator. The actuator handle (size 4 and 8 on request) is connected with a mechanical switch which is to be blocked by a padlock or the like.

NOTE!The mechanical hand control switch must only be used when the actuator is completely unattended!

On/Off - 3-phase 400V 50Hz

TypeMax.Maneuver time in s.Hand wheelMotor S4 - 30% uptime
TorqueEngineSpringEffectNumber of revolutionsInIdcosE*
NmFastStandardkWrpmAAψ%
FQ 044014+/- 3+/- 7On request0,0630000,30,90,843%
FQ 044033+/- 3+/- 7On request0,0630000,30,90,843%
FQ 088033+/- 2+/- 6On request0,0630000,30,90,843%
FQ 1212039+/- 2+/- 10Yes0,0630000,30,90,843%
FQ 1212093+/- 2+/- 10Yes0,0630000,30,90,843%
FQ 1818093+/- 3+/- 15Yes0,0630000,30,90,843%
FQ 30300117+/- 7+/- 18Yes0,0630000,30,90,843%
FQ 50500117+/- 9+/- 27Yes0,0630000,30,90,843%
* Efficiency

On/Off - 1-phase 230V 50Hz

TypeMax.Maneuver time in s.Hand wheelMotor S4 - 30% uptime
TorqueEngineSpringEffectNumber of revolutionsInIdcosE*
NmFastStandardkWrpmAAψ%
FQ 044033+/- 3+/- 7On request0,0330000,50,70,925%
FQ 088033+/- 2+/- 6On request0,0330000,50,70,925%
FQ 1212093+/- 2+/- 10Yes0,0330000,50,70,925%
FQ 1818093+/- 3+/- 15Yes0,0330000,50,70,925%
FQ 30300117+/- 7+/- 18Yes0,0330000,50,70,925%
* Efficiency

Accessories and options

Additional accessories
- 2 additional adjustable end contacts
- Potentiometer
- Radioater
- EEX execution according to. ATEX II 2G EEx d II C T4
- Electromagnetic relay, 24 VDC, 110 VAC

For slower shutdown times in case of power failure, we can modify the hydraulic reservoir. Contact Armatec

Installation

During all work with the actuator the power MUST be disconnected.
- The actuator must be connected as per the wiring diagram, see the manual.
- Each actuator must be powered by an individual switch or relay contact, minimum 16A, to prevent cross-feed between the actuators.
- Installation with motor downwards should be avoided.
- The actuator should be installed vertically
- Check that the actuator turns the valve in the desired direction.
- The correct limit switch (open or closed) shall then break the motor current.
- Cable entries must comply at least to the lowest protection class of devices.

See the manual for start-up , storage and maintenance.

Marking

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

Maintenance

The actuator is maintenance-free up to 50 000 cycles

How to order

Example: 3930-4-4A3A
AT3900-4*3**A***3****A*****
Fig. no.SizeOperating timeConnectionVoltageOptions

Example: 3930-4-4A3A (Spring closing, On/Off, 230V, 50Hz)

Example: 3931-4-4A3A (Spring opening, On/Off, 230V, 50Hz)

* 4, 8, 12, 18, 30, (50 only with 3x400V)
** Technical data for possible times
*** Technical data for possible connection types
**** 0=24 VDC, 3=230 VAC, 4=3-phase 400 V
***** A=On/Off, C=Positioning 4-20 mA, E=1kOhm POT