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LF-(S) • Actuators with spring reset 4Nm

Servomotors with spring return for air volume safety dampers of up to 0,8 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.

Type S: With integrated 0-100% auxiliary switch for adjustable signalization.

Brand

  • Belimo

Application

  • Safety dampers

Specifications

  • Torque 4 Nm
  • Nominal Voltage LF 230-(S) 230 V AC
  • Nominal Voltage LF 24-(S) 24 V AC/DC
  • Control: open-close with spring return
  • Auxiliary switch: 1 x SPDT, 1 mA … 6 (1,5) A, AC 250 V (0-100% adjustable)

Accessoires

  • Clips for axle diameter 16 - 20 mm, type K6-1

Technical data

  • Power consumption:
  1. In operation: 5 W @ nominal torque LF 230-(S) / 5 W @ nominal torque LF 24-(S)
  2. At rest: 3 W LF 230-(S) / 2.5 W LF 24-(S)
  3. For wire sizing: 7 VA LF 230-(S) / 7 VA LF 24-(S)
  • Direction of rotation: reversible by mounting
  • 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 : 40 - 75 s
  • Running time spring return : 20 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 open-close type with spring return and with a torque of 4 Nm for direct mounting on the damper axe. With integrated 0-100% auxiliary switch (Type S). Angle max 95° with mechanical end stops. Protection class II totally insulated, IP 54 in any mounting position EMC: CE according to 89/336/EEC
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