LMQ24A-SR - Belimo Damper rotary actuator 4 Nm, 2.5 s, 95° AC / DC 24 V

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The Belimo LMQ24A-SR is a type of Actuator used to control dampers in HVAC systems and applications.

This kind of Actuator rotates the damper in order to control it.

The force applied by the Torque of the LMQ24A-SR is 4 Nm.

This Rotary Actuator needs to be supported by a power supply of 24Vac/Vdc.

IACS has the best prices on the right Belimo Actuators for your system.

Consult the Belimo custom datasheet above or contact iacs via email for personalised assistance if you have queries about size or installation.

Features
 

• Mode of operation The actuator is controlled with a standard modulating signal of DC 0 ... 10 V and moves to the position defined by the control signal. The measuring voltage U serves for the electrical display of the damper position 0 ... 100% and as slave control signal for other actuators.


• 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.
  
  


• Manual override Manual override with push-button possible (the gear is disengaged for as long as the button ispressed or remains locked).
  
  


• Adjustable angle of rotation Adjustable angle of rotation with mechanical end stops.A minimum permissible angle of rotation of 30° must be allowed for.
  
  


• High functional reliability The actuator is overload-proof, requires no limit switches and automatically stops when the endstop is reached.
  
  


• Home position The first time the supply voltage is switched on, i.e. during initial startup, the actuator carries outan adaptation. After pressing the «gear disengagement» pushbutton, the actuator moves to thehome position at the end stop.
  The actuator then moves into the position defined by the control signal.
  
  


• Adaption and synchronisation During adaptation, the upper and lower spindle end stop is recorded and deposited in theactuator. Detection of the mechanical end stops enables a gentle approach to the end positionsand thus protects the actuator mechanism.During synchronisation, the actuator moves to the home position for angle referencing. Thisensures correct position regulation.

•     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 13 W @ nominal torque
•     At rest 2 W
•     For wire sizing 23 VA (I max. 20 A @ 5 ms)
•     Connection Cable 1 m, 4 x 0.75 mm2
•     Functional data Factory settings
•     Torque (nominal torque) Min. 4 Nm @ nominal voltage
•     Control Control signal Y DC 0 ... 10 V, input impedance 100 k�
•     Position feedback (Measuring voltage) DC 2 ... 10 V, max. 0.5 mA
•     Position accuracy ±5%
•     Direction of rotation Reversible with switch 0 / 1
•     Direction of motion at Y = 0 V At switch position 0 resp.
•     Manual override Gearing latch disengaged with pushbutton, can be locked
•     Angle of rotation Max. 95° , can be limited at both ends with adjustable mechanical end stops
•     Angle of rotation limiting min. 30°
•     Running time 2.5 s / 90°
•     Automatic adjustment of operating range and measuring signal U to match the mechanical angle of rotation
•     Manual triggering of the adaption by pressing the «Adaption» button or with the PC-Tool
•     Override control MAX (maximum position) = 100%
•     MIN (minimum position) = 0%
•     ZS (intermediate position, only AC) = 50%
•     Sound power level 52 dB (A)
•     Position indication Mechanical, pluggable
•     Negative torque ! ≤50% from nominal torque (Caution: can only be used with restrictions. Please contact your Belimo representative.)
•     Safety
•     Protection class III Safety extra-low voltageUL Class 2 Supply
•     Degree of protection IP54 in any mounting position
•     NEMA 2, UL Enclosure Type 2
•     EMC CE according to 2004/108/EC
•     Certification Certified to IEC/EN 60730-1 and IEC/EN 60730-2-14 cULus according to UL 60730-1A and UL 60730-2-14 and CAN/CSA E60730-1:02
•     Mode of operation Type 1
•     Rated impulse voltage 0.8 kV
•     Control pollution degree 3
•     Ambient temperature –30 ... +40°C (no restrictions)! +50°C (Caution: can only be used with restrictions. Please contact your Belimo representative.)
•     Non-operating temperature –40 ... +80°C
•     Ambient humidity 95% r.H., non-condensating
•     Maintenance Maintenance-free