LMQB24-1 BELIMO | Alldatasheet
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Technical content
Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10% Power consumption in operation 13 W Power consumption in rest position 1.5 W Transformer sizing 23 VA (class 2 power source) (Imax 20A @ 5ms) Shaft Diameter 1/2...1.05” round, centers on 1/2” and 3/4” with insert, 1.05” without insert Electrical Connection 18 GA plenum cable with 1/2” conduit connector, degree of protection NEMA 2 / IP54, 3 ft [1 m] 10 ft [3 m] and 16ft [5 m] Overload Protection electronic throughout 0...95° rotation Input Impedance 1000 Ω Angle of rotation adjustable with mechanical end stop, 30...95° Torque motor 35 in-lb [4 Nm] Direction of motion motor selectable with switch 0/1 Position indication Mechanically, 30...65 mm stroke Manual override external push button Running Time (Motor) default 2.5 s, variable 5 or 10 s, constant, independent of load Ambient humidity max. 95% r.H., non-condensing Degree of Protection IP54, NEMA 2, UL Enclosure Type 2 Housing material UL94-5VA Agency Listing cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2014/30/EU and 2014/35/EU Noise level, motor 52 dB(A) Servicing maintenance-free Quality Standard ISO 9001 Weight 2.4 lb [1.1 kg] †Rated Impulse Voltage 800V, Type of Action 1.AA.B, Control Pollution Degree 3. Torque min. 35 in-lb, for control of damper surfaces up to 11 sq. ft. Application For On/Off control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. The actuator is mounted directly to a damper shaft from ½” up to 1.05” in diameter by means of its standard universal clamp. Operation The actuator is not provided with and does not require any limit switches, but is electronically protected against overload. The anti-rotation strap supplied with the actuator will prevent lateral movement. The LMQB(X) series provides 95° of rotation and a visual indicator which indicates position of the actuator. When reaching the damper or actuator end position, the actuator automatically stops. The gears can be disengaged with manual release on the actuator cover. The LMQB(X)24-1 actuators use a sensorless brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in holding mode. Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto the actuator body for signaling and switching functions. Dimensions (Inches[mm]) LMQB24-1 Technical Data Sheet On/Off, Non-Spring Return, 24 V 800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN Date created, 02/10/2020 - Subject to change. © Belimo Aircontrols (USA), Inc.
On/Off control damper actuators shall be electronic direct-coupled type, which require no crank arm and linkage and be capable of direct mounting to a shaft from ½” to 1.05”. 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 meet the requirements for double insulation so an electrical ground is not required to meet agency listings. Run time shall be constant and independent of torque. Actuators shall 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 Diagrams Provide overload protection and disconnect as required. Actuators may also be powered by 24 VDC. Actuators may be connected in parallel if not mechanically linked. Power consumption and input impedance must be observed. Blk (1) Common Red (2) Hot + Wht (3) Y Input Line Volts 1 3 1124 VAC Transformer On/Off LMQB24-1 Technical Data Sheet On/Off, Non-Spring Return, 24 V 800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN Date created, 02/10/2020 - Subject to change. © Belimo Aircontrols (USA), Inc.