800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA299LMQB(X)24-1On/Off, Non-Spring Return, 24 VTorque min. 35 in-lb for control of damper surfaces up to 11 sq ft.ApplicationFor On/Off control of dampers in HVAC systems. Actuator sizing should be done inaccordance with the damper manufacturer’s specifications. The actuator is mounteddirectly to a damper shaft from ½” up to 1.05” in diameter by means of its standarduniversal clamp.OperationThe actuator is not provided with and does not require any limit switches, but iselectronically protected against overload. The anti-rotation strap supplied with theactuator will prevent lateral movement.The LMQB(X) series provides 95° of rotation and a visual indicator which indicatesposition of the actuator. When reaching the damper or actuator end position, theactuator automatically stops. The gears can be disengaged with manual release on theactuator cover.The LMQB(X)24-1 actuators use a sensorless brushless DC motor, which is controlledby an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls theactuator’s rotation and provides a digital rotation sensing (DRS) function to preventdamage to the actuator in a stall condition. Power consumption is reduced in holdingmode.Add-on auxiliary switches or feedback potentiometers are easily fastened directly ontothe actuator body for signaling and switching functions.Dimensions (Inches [mm])LMQ24_1Technical Data LMQB(X)24-1Power supply24 VAC ±20% 50/60 Hz24 VDC ±10%Power consumption13 W (1.5 W)Transformer sizing23 VA (Class 2 power source)(I max 20A@5ms)Electrical connection18 GA plenum rated cableprotected NEMA 2 (IP54)3 ft [1m] 10 ft [3m] 16 ft [5m]Overload protectionelectronic throughout 0 to 95° rotationControlon/offInput impedance1000Angle of rotationmin. 30°, max. 95°, adjust. with mechanical stopTorque35 in-lb [4 Nm]Direction of rotationreversible with switchPosition indicationreflective visual indicator (snap-on)Manual overrideexternal push buttonRunning time2.5, 5 or 10 secondsconstant independent of loadHumidity5 to 95% RH non-condensing (EN 60730-1)Ambient temperature-22°F to 122°F [-30°C to 50°C]Storage temperature-40°F to 176°F [-40°C to 80°C]Housing NEMA 2, IP54, UL enclosure type 2Housing materialUL94-5VAAgency listingscULus acc. to UL 60730-1A/-2-14, CAN/CSA E60730-1:02,CE acc. to 2004/108/EEC and 2006/95/ECNoise level<52 dB(A)Servicing maintenance freeQuality standardISO 9001Weight1.8 lbs [0.85 kg]Rated Impulse Voltage 800V, Type of action 1, (1.B for -S version), Control Pollution Degree 3.40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.800-543-9038 USA866-805-7089 CANADA203-791-8396 LATIN AMERICA30LMQB(X)24-1On/Off, Non-Spring Return, 24 VAccessories K-NAReversible ClampZG-101Universal Mounting BracketZG-104Universal Mounting BracketZG-NMACrank arm Adapter KitAU8-25Universal Shaft ExtensionZS-100Weather Shield - SteelZS-150Weather Shield - PolycarbonateTool-068 mm & 10 mm WrenchS1A, S2AAuxiliary Switch(es)P370Shaft Mount Auxiliary Switch…Feedback PotentiometersNOTE: When using LMQB(X)24-1 actuators, only use accessories listed on this page.Typical SpecificationOn/Off control damper actuators shall be electronic direct-coupled type, which requireno crank arm and linkage and be capable of direct mounting to a shaft from ½” to1.05”. Actuators shall have brushless DC motor technology and be protected from overload at all angles of rotation. Actuators shall have reversing switch and manual override on the cover. Actuators with auxiliary switches must be constructed to meetthe requirements for double insulation so an electrical ground is not required to meet agency listings. Run time shall be constant and independent of torque. Actuatorsshall be cULus listed, have a 5-year warranty, and be manufactured under ISO 9001 International Quality Control Standards.Actuators shall be as manufactured by Belimo.Wiring DiagramProvide overload protection and disconnect as required.Actuators may also be powered by 24 VDC.Meets cULus or UL and CSA Standard requirements without theneed of an electrical ground connection.WARNING Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may benecessary to work with live electrical components. Have a qualified licensed electrician or otherindividual who has been properly trained in handling live electrical components perform these tasks. Failure to follow all electrical safety precautions when exposed to live electrical compo-nents could result in death or serious injury.343_08On/Off Control M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.Next >