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201
GMX24-MFT-T N4
NEMA 4, Proportional Control, Non-Spring Return, Direct Coupled, 24V, Multi-Function Technology
®
Technical Data
GMX24-MFT-T N4
Power supply
24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption
4.0 W (2.0 W)
Transformer sizing
7 VA (Class 2 power source)
Electrical connection
screw terminal (for 26 to 14 GA wire)
½” conduit connector
Overload protection
electronic throughout 0 to 95° rotation
Operating range Y
2 to 10 VDC, 4 to 20 mA (default)
variable (VDC, fl oating point, on/off)
Input impedance
100 k
Ω
(0.1 mA), 500
Ω
1500
Ω
(PWM, fl oating point, on/off)
Feedback output U
2 to 10 VDC, 0.5 mA max, VDC variable
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
dial
Running time
150 seconds (default)
variable (45 to 170 seconds)
Humidity
5 to 100% RH (UL Type 4)
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
UL Type 4X, NEMA 4X, IP66
Housing material
polycarbonate
Agency listings†
cULus acc. to UL 60730-1A/-2-14,
CAN/CSA E60730-1, CSA C22.2 No. 24-93,
CE acc. to 89/336/EEC
Noise level
<45dB(A)
Servicing
maintenance free
Quality standard
ISO 9001
Weight
10 lbs [4.56 kg]
† Rated Impulse Voltage 800V, Type of action 1, Control Pollution Degree 3.
Torque min. 360 in-lb for control of damper surfaces up to 90 sq ft.
Application
For proportional modulation of dampers in HVAC systems. Actuator sizing
should be done in accordance with the damper manufacturer’s specifi cations.
The actuator is mounted directly to a damper shaft up to 1.05" in diameter by
means of its universal clamp.
The default parameters for 2 to 10 VDC applications of the …MFT actuator are
assigned during manufacturing. If necessary, custom versions of the actuators
can be ordered. The parameters can be changed by two means: pre-set and
custom confi gurations from Belimo or on-site confi gurations using the Belimo
PC-Tool software.
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-MFT-T N4 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 after the cover is removed.
The GMX24-MFT-T N actuators use a brushless DC motor, which is controlled
by an Application Specifi c 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])
172 [6.77]
D3
12
M40024 - 05/10 - Subject to change.
© Belimo
Aircontrols (USA),
Inc.
