EF24A-MF - Spring-return actuator 30 Nm, < 150 s, AC / DC 24 V, modulating, MF

EF24A-MF - Spring-return actuator 30 Nm, < 150 s, AC / DC 24 V, modulating, MF


•    IP 54, Manual override with integrated position stop
•    Running time spring < 20 s
•    Control  DC 0...10 V (0...32 V adjustable)
•    Operating range DC 0.5...10 V, adjustable (0.5...32 V)
•    Position feedback DC 0.5...10 V, adjustable (0.5...32 V)
•    Connection cable FRNC 1 m
•    Spindle driver universal spindle clamp

SKU: EF24A-MF

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Product Description

Details

Features

 

  • Mode of operation The actuator moves the damper to the operating position at the same time as tensioning the return spring. The damper is turned back to the emergency position by spring force if the supply voltage is interrupted.

  • Simple direct mounting Simple direct mounting on the damper spindle with a universal spindle clamp, supplied with ananti-rotation strap to prevent the
    actuator from rotating

  • Parameterisable actuators The factory settings cover the most common applications. Input and output signals and other parameters can be altered with the BELIMO Service tool MFT-P or the adjustment and diagnostic tool ZTH-GEN.

  • Simple direct mounting Simple direct mounting on the damper spindle with a universal spindle clamp, supplied with an anti-rotation strap to prevent the actuator from rotating.

  • Spindle stabiliser The spindle clamp of the spring-return actuator is equipped ex-works with a spindle stabiliser for stabilising the combination of damper, damper spindle and actuator.
    This is comprised of two plastic support rings and, depending on the installation situation and the spindle diameter, must be left in place or partially or completely removed.

    Long spindle installation :• The use of the spindle stabiliser is necessary with long spindle installation with a spindle diameter of 12 to 20 mm.• The use of the spindle stabiliser is not necessary with long spindle installation with a spindle diameter of 21 to 26.7 mm, and it can be removed.

    Short axis installation :• The necessity of the spindle stabiliser does not apply with short spindle installation; it can be removed or – if the length of the spindle permits it – left in the spindle clamp.
    For additional information, see the Installation instructions.
     
  • High operational reliability The actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.

  • Home position When the supply voltage is switched on, the actuator automatically detects its emergency position (zero initialisation). This process, which takes place with the actuator stationary, lasts <15 s.

    Manuals & Datasheets

    Manuals & Datasheets

    Manuals & Datasheets
     DATA-SHEET 
    DATASHEET
    Technical Information

    •    Electrical data
    •    Nominal voltage AC 24 V, 50/60 Hz / DC 24 V
    •    Nominal voltage range AC 19.2 ... 28.8 V / DC 21.6 ... 28.8 V
    •    Power consumption In operation 9.5 W @ nominal torque
    •    At rest 4.5 W
    •    For wire sizing 16 VA
    •    Connection Cable 1 m, 4 x 0.75 mm2
    •    Parallel operation Yes
    •    Functional data Factory settings
    •    Torque (nominal torque) Motor Min. 30 Nm @ nominal voltage
    •    Spring return Min. 30 Nm
    •    Control Control signal Y DC 0 … 10 V, input impedance 100 k??
    •    Operating range DC 0.5 ... 10 V
    •    Position feedback (measuring voltage U) DC 0.5 ... 10 V, max. 0.5 mA
    •    Position accuracy ±5%
    •    Direction of rotation Motor Reversible with switch clockwise/ anticlockwise
    •    Spring return By mounting
    •    Direction of rotation Y = 0 V At switch position 1 or 0, respectively
    •    Manual override With hand crank and interlocking switch
    •    Angle of rotation Max. 95°, adjustable from 33% in 5% steps (with enclosed angle of rotation limiter)
    •    Running time Motor <=150 s / 90°
    •    Spring return <=20 s @ –20 ... 50°C / max. 60 s @ –30°C
    •    Automatic adjustment of running time, operating range and measuring signal U to match the mechanical angle of rotation
    •    Manual triggering of the adaption by pressing the «Adaption» button
    •    Override control MAX (maximum position) = 100%
    •    MIN (minimum position) = 0%
    •    ZS (intermediate position, only AC) = 50%
    •    Sound power level Motor =45 dB (A) @ 150 s running time
    •    Spring return =71 dB (A)
    •    Service life Min. 60,000 emergency positions
    •    Position indication Mechanical
    •    Safety Protection class III Extra low voltage UL Class 2 Supply
    •    Degree of protection IP54 NEMA2, UL Enclosure Type 2
    •    EMC CE according to 2004/108/EC
    •    Mode of operation Type 1.AA
    •    Rated impulse voltage 0.8 kV
    •    Control pollution degree 3
    •    Ambient temperature –30 ... +50°C
    •    Non-operating temperature –40 ... +80°C
    •    Ambient humidity 95% r.h., non-condensating
    •    Maintenance Maintenance-free
    •    Dimensions / Weight Dimensions See «Dimensions» on page
    •    Weight Approx. 4.3 kg

    ManufacturerBelimo

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