Belimo Modulating Damper Actuator

In this Article we are going to discuss about Belimo Modulating damper actuator GM24A-SR complete working  principle and Technical data’s.  

 

Belimo Modulating Damper Actuator

Mode of operation

• The actuator is connected with a standard modulating signal of 0 to 10 Volt and drives to the position defined by the positioning signal.

• Measuring voltage U serves for the electrical display of the damper position 0.5 to 100% and as slave control signal for other actuators.

• Simple direct mounting on the damper shaft with a universal shaft clamp, supplied with an anti-rotation device to prevent the actuator from rotating.

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

• Adjustable angle of rotation with mechanical end stops.

• High functional reliability

• The actuator is overload protected, requires no limit switches and automatically stops when the end stop is reached.

• Servicing is maintenance-free .

• Parallel operation is available

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Electrical Installation :

• Connection via safety isolating transformer.
• Parallel connection of other actuators possible.

Damper size : Air damper size up to approximate  8 m².

Damper

The diagram indicate the dimensions of Spindle length and Clamping range.

Wiring :

Cable colours

• 1 black is ac 0 volt
• 2 red is ac 24 volt
• 3 white is dc 0 or 2-10 volt command signal
• 5 orange is dc 2 to 10 volt feedback signal

 

 

Mechanical accessories:

Mechanical accessories

Actuator arm for standard shaft clamp , Position indicator, Base plate extension for GMA to GM , Mounting kit for linkage operation for flat installation , Anti-rotation mechanism 230 mm , Damper crank arm Slot width 8.2 mm, and much more items are available in Mechanical accessories only based on your project this extra mechanical accessories you will need.

 

Electrical accessories :

Electrical Accessories

Positioner for wall mounting , front-panel mounting , Auxiliary switch , Feedback potentiometer , Signal converter voltage to current. and much more items are available in Electrical accessories  only based on your project this extra electrical accessories you will need.

 

Electrical Technical data

• Nominal voltage is AC or DC 24 Volt.
• Nominal voltage frequency is 50 or 60 Hz.
• Power consumption in operation  is 4.5 Watt.
• Power consumption in rest position  is 2 Watt.
• Power consumption for wire sizing  is 6.5 VA.

Mechanical Technical data

• Mechanical interface is Universal shaft clamp reversible 12 to 26.7 mm,
• Manual override with push-button, can be locked
• Position indication is Mechanically, pluggable
• Running time motor is 150 second at 90°
• Sound power level of motor is 45 dB(A)
• Angle of rotation is Maximum 95°
• Angle of rotation note is can be limited on both sides with adjustable mechanical end stops.

 

Functional Technical data

• Torque motor is 40 Newton meter 
• Operating range Y is 2 to 10 Volt dc
• Input Impedance is 100 kilo ohm
• Position feedback U is 2 to 10 Volt dc
• Position feedback U note is Maximum 1 milliamps
• Position accuracy is ±5%
• Direction of motion motor is selectable with switch 0 or 1
• Direction of motion note is Y = 0 V At switch position 0 (ccw rotation) or 1 (cw rotation)

 

Safety Technical data

• Protection class IEC/EN is III Safety Extra-Low Voltage (SELV) ,
• Protection class U L is U L Class 2 Supply
• Degree of protection IEC/EN is IP54
• Degree of protection NEMA/U L is NEMA 2
• Enclosure is UL Enclosure Type 2
• Mode of operation is Type 1

 

Environmental Technical data

• Control pollution degree is 3
• Ambient temperature is -30 to 50°C
• Storage temperature is -40 to 80°C
• Ambient humidity is Maximum.95% RH  non-condensing

 

Safety notes

• The device must not be used outside the specified field of application, especially not in aircraft or in any other airborne means of transport.

• Outdoor application: only possible in case that no sea water, snow, ice, isolation or aggressive gases interfere directly with the actuator and that is ensured that the ambient conditions remain at any time within the thresholds according to the data sheet.

Outdoor Application

• Only Authorized specialists may carry out installation. All applicable legal or institutional installation regulations must be complied during installation.

• The device may only be opened at the manufacturer’s site. It does not contain any parts that can be replaced or repaired by the user.

• Cables must not be removed from the device.

• To calculate the torque required, the specifications supplied by the damper manufacturers concerning the cross-section, the design, the installation site and the ventilation conditions must be observed.

• The device contains electrical and electronic components and must not be disposed of as household refuse. All locally valid regulations and requirements must be observed.

• Dimensional : Height 179 mm , width 116 mm , depth 70 mm

• Weight : 2.5 kilogram

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