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SF 24A-SR • Actuators with spring reset 20Nm modulating 0-10V

Servomotor with spring return for air volume safety dampers of up to 4 m² depending on the type of air valve and the pressure on the valves. Simple direct mounting on the damper axe with a universal spindle clamp, supplied with an anti-rotation strap to prevent the actuator from rotating

Brand

  • Belimo

Application

  • Safety dampers

Specifications

  • Torque 20 Nm
  • Nominal Voltage 24 V AC / DC
  • Control: modulating standard control signal DC 0-10 V, position feedback DC 2-10 V. The measuring voltage U allows the damper position (0-100%) to be electrically indicated and serves as a follow-up control signal for other actuators

Accessoires

  • Positioners, type SGA24 / SGF24

Technical data

  • Power consumption:
  1. In operation: 5 W @ nominal torque
  2. At rest: 3 W
  3. For wire sizing: 7 VA
  • Control:
  1. Control signal Y: DC 0-10 V, typical input impedance 100 kΩ
  2. Working range: DC 2-10 V
  • Position feedback (Measuring voltage): DC 2-10 V, max. 0.5 mA
  • Position accuracy: +/- 5%
  • Direction of rotation: reversible by mounting
  • Direction of rotation at Y = 0 V: at switch position 0 resp. 1
  • Angle of rotation: max. 95° , limited on both sides by means of adjustable, mechanical end stops. The actuator is overload proof; requires no limit switches and automatically stops when the end stop is reached
  • Running time motor : < 150 s
  • Running time spring return : < 60 s
  • Sound power level: max. 62 dB (A)
  • Degree of protection: IP54 in any mounting position

Wiring diagram

Electrical diagram

Text for tender

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  • The servomotor shall be of the modulating with spring return type with signal 0-10 V with torque of 20 Nm for direct mounting on the damper axe. 24V, angle max 95° with mechanical end stops. Protection class III safety extra-low voltage, IP 54 in any mounting position EMC: CE 2004/108/EG
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