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800-543-9038 

USA

866-805-7089 

CANADA

203-791-8396 

LATIN AMERICA

207

GMX24-LON

LonWorks

®

, Non-Spring Return, 24 V

Technical Data

GMX24-LON

Power supply

24 VAC ± 20% 50/60 Hz
24 VDC ± 10%

Power consumption

4.5 W (1.5 W)

Transformer sizing

7 VA (Class 2 power source)

Electrical connection

18 GA plenum rated cable
1/2” conduit connector
protected NEMA 2 (IP54)
3 ft [1m]

Overload protection

electronic throughout 0 to 95° rotation

Angle of rotation

max. 95°, adjustable with mechanical stop
electronically variable

Torque

360 in-lb [40 Nm]

Direction of rotation

reversible with 

switch

Position indication

reflective visual indicator (snap-on)

Manual override

external push button

Running time

150 seconds (default)

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

3.4 lbs [1.55 kg]

† Rated  Impulse  Voltage 800V, Type of action 1, Control Pollution Degree 3.

LonWorks

®

Certified

according to LonMARK

®

 3.3

Processor

Neuron 3120

Transceiver

FTT-10A, compatible with LPT-10

Functional profile

according to LonMARK

®

 Damper

actuator object #8110
open loop sensor object #1

LNS plug-in for actuator/sensor can be run with any LNS based integration

tool (min. for LNS 3.x)

Service button and status LED

according to LonMARK

®

 guidelines

Conductors, cables

conductor lengths, cable specifications and
topology of the LonWorks

®

 network according to

the Echelon

®

 directives

LonWorks and LonMARK © 2007-2009 LonMark International

T

i

i lb f

l f d

f

f

Torque min. 360 in-lb for control of damper surfaces up to 90 sq ft.

Application

Direct coupled actuators for direct link to LonWorks network. Actuators are easily
installed by direct shaft mounting on air dampers in ventilation and air conditioning
systems. Actuator can be controlled by any compatible LON system.

For proportional modulation 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 up to 1.05” in diameter by means
of its universal clamp. A crank arm and several mounting brackets are available for
applications where the actuator cannot be direct coupled to the damper shaft.

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 GMX24-LON series provides 95° of rotation and a visual indicator indicates
position of the actuator. When reaching the damper or actuator end position, the
actuator automatically stops. The gears can be manually disengaged with a button on
the actuator cover.

The GMX24-LON actuators use a brushless DC motor, which is controlled by an
A

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.

A

Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto
the actuator body for signaling and switching functions.

Dimensions

 (Inches [mm])

2.9”

  [72.9]

4.55”

  [115.6]

7.02”  [178.4]

5.37”  [136.4]

1.42”

[36]

5.6”  [142.4]

2”  [50.8]

1/2” to 1.05” [12.7 to 26.67]

2/5” to 1.05” [10 to 26.67]

To center of
mounting slot.

D12

3

 M40024 - 05/10 - Subject to change.

 © Belimo 

Aircontrols (USA),

 Inc.

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