Belimo CMB24-3 Manual

CMB24-3(-T)
On/Off, Floating Point, Non-Spring Return, 24 V
Technical Data CMB24-3
Power supply 24 VAC ± 20% 50/60 Hz
24 VDC ± 20%
Power consumption 1.0 W (0.2 W resting)
Transformer sizing 1.5 VA (Class 2 power source)
Electrical connection 3 ft, 18 GA appliance rated cable
protected NEMA 2 (IP54)
Overload protection electronic throughout rotation
Control on/off, fl oating point
Angle of rotation without end stop; limitless
with end stop; 315° fi x
287.5° max. with two end stops
Torque 18 in-lb [2 Nm]
Direction of rotation by electrical installation
Position indication reflective visual indicator (snap-on), with magnet
Manual override disengage with magnet
Running time 35 seconds, constant independent of load
Humidity 5 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 2
Housing material UL94-5VA
Agency listings† cULus acc. to UL 60730-1A/-2-14,
CAN/CSA E60730-1:02,
CE acc. to 2004/108/EEC and 2006/95/EC
Noise level <45dB(A)
Servicing maintenance free
Quality standard ISO 9001
Weight 0.4 lbs [0.18 kg]
CMB24-3-T
Electrical connection screw terminal (for 18 to 16 GA wire)
Form fit 0.31" x 0.31" [8mm x 8mm]
Housing NEMA 1/IP20
Weight 0.3 lbs [0.13 kg]
† Rated Impulse Voltage 800V, Type of action 1, Control Pollution Degree 3 for 24-3-T Degree 2.
800-543-9038 USA
311
Torque min. 18 in-lb for control of damper surfaces up to 4.5 sq ft. T i i lb f
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: Open-close or 3-point
• 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).
A A djustable 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 CM24-3 actuator uses a brushless DC motor, which is controlled by an
A A pplication 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])
866-805-7089 CANADA
l f d f
203-791-8396 LATIN AMERICA
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