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237
AMQB(X)24-MFT
Proportional, Non-Spring Return, 24 V, Multi-Function Technology
®
Technical Data
AMQB(X)24-MFT
Power supply
24 VAC ± 20% 50/60 Hz
24 VDC ± 10%
Power consumption
15 W (1.5 W)
Transformer sizing
26 VA (Class 2 power source)
Electrical connection
3 ft [1m] 10 ft [3m] 16 ft [5m]
18 GA plenum rated cable
protected NEMA 2 (IP54)
Overload protection
electronic throughout 0 to 95° rotation
Operating range Y
2 to 10 VDC, 4 to 20 mA (default)
variable (VDC, on/off)
Input impedance
100 k
Ω
(0.1 mA), 500
Ω,
1000
Ω
(on/off)
Feedback output U
2 to 10 VDC, 0.5 mA max, VDC variable
Angle of rotation
min. 30°, max. 95°, adjust. with mechanical stop
electronically variable
Torque
140 in-lb [16 Nm]
Direction of rotation
reversible with
switch
Position indication
reflective visual indicator (snap-on)
Manual override
external push button
Running time
7, 10, 15 or 20 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
<52dB(A)
Servicing
maintenance free
Quality standard
ISO 9001
Weight
3.75 lbs [1.7 kg]
† Rated Impulse Voltage 800V, Type of action 1, Control Pollution Degree 3.
Torque min. 140 in-lb for control of damper surfaces up to 35 sq ft.
Application
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, ½” self-centered default. A crank arm and several mounting
brackets are available for applications where the actuator cannot be direct coupled to
the damper shaft.
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
configurations from Belimo or on-site configurations 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 AMQB(X) 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 AMQB(X)24-MFT actuators use a brushless DC motor, which is controlled by an
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.
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
M
40024 - 05/10 - Subject to change.
© Belimo
Aircontrols (USA),
Inc.