CMB24-SR-L BELIMO | Alldatasheet

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Technical content

Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, ±20% Power consumption in operation 1.5 W Power consumption in rest position 0.5 W Transformer sizing 1.5 VA (class 2 power source) Shaft Diameter 1/4...1/2” round, centers on 3/8” Electrical Connection 695 Overload Protection electronic throughout full rotation W resistor) Position Feedback 2...10 V Angle of rotation 0...287.5°, Without limitation: endless With one end stop clip Z-ESCM: 315° Torque motor 18 in-lb [2 Nm] Direction of motion motor by electrical installation Position indication Mechanically, pluggable (with integrated magnet for gear disengagement) Manual override disengage with magnet Running Time (Motor) 35 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 45 dB(A) Servicing maintenance-free Quality Standard ISO 9001 Weight 0.60 lb [0.27 kg] †Rated Impulse Voltage 800V, Type of Action 1, Control Pollution Degree 2. Torque min. 18 in-lb, for control of damper surfaces up to 4.5 sq. ft. Application Damper actuator for operating air control dampers in ventilation and air- conditioning systems for building services installations.

  • For air control dampers up to approximately 4.5 sq ft
  • Torque 2 Nm
  • Nominal voltage AC/DC 24 V
  • Control: 2 to 10 VDC
  • Running time 35 sec. @ 90° Operation Simple direct mounting on the damper spindle with a universal spindle clamp or form fit, supplied with an anti-rotation bracket to prevent the actuator from rotating. Manual operation is possible with a magnet (the gearing latch remains disengaged as long as the magnet is in place). Adjustable angle of rotation with mechanical end stops, that requires no tools to move or remove. The actuator is overload-proof, requires no limit switches and automatically stops when the end stops is reached. The CMB24-SR (-R or -L) actuator uses a brushless DC motor, which is controlled by an Application Specific Integrated Circuit (ASIC). The ASIC monitors and controls the actuator’s rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in holding mode. Belimo’s Halomo sensorless brushless DC motor spins by reversing the poles of stationary electromagnets housed inside rotational permanent magnets. The electromagnetic poles are switched by the an ASIC developed by Belimo. Unlike the conventional DC motor, there are no brushes to wear or commutators to foul. This means the brushless DC motor adds accuracy and reduces power consumption in a holding mode. Dimensions (Inches[mm]) CMB24-SR-L Technical Data Sheet 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.

Proportional 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 1/4” to 1/2” diameter. Actuators must provide proportional damper control response to a 2 to 10 VDC or, with the addition of a 500Ω resistor, a 4 to 20 mA control input from an electronic controller or positioner. Actuators shall have brushless DC motor technology and be protected from overload at all angles of rotation. Actuators shall have manual override on the cover. 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. Only connect common to negative (-) leg of control circuits. A 500 Ω resistor (ZG-R01) converts the 4 to 20 mA control signal to 2 to 10 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 + Control Signal (+)VDC/mA (–) Feedback Signal (+) 2 to 10 VDC (–) Ω 500 Ω Line Volts Org (5) U Output Wht (3) Y Input, 2 to 10V

24 VAC Transformer

2 to 10 VDC / 4 to 20 mA Control CMB24-SR-L Technical Data Sheet 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.