Technical Data
1473
Power Supply 24 VAC, ±20%, 50/60 Hz, 24 VDC, ±10%
Power consumption in operation 2.5 W
Power consumption in rest
position
0.5 W
Transformer sizing 5.5 VA (class 2 power source)
Shaft Diameter 1/2...1.05” round, centers on 1/2” and 3/4”
with insert, 1.05” without insert
Electrical Connection 18 GA plenum cable, 3 ft [1 m], with 1/2”
conduit connector, degree of protection
NEMA 2 / IP54
Overload Protection electronic throughout 0...95° rotation
Input Impedance 600 Ω
Angle of rotation Max. 95°, adjustable with mechanical stop
Torque motor 180 in-lb [20 Nm]
Direction of motion motor selectable with switch 0/1
Position indication Mechanically, 30...65 mm stroke
Manual override external push button
Running Time (Motor) 90 s, constant, independent of load
Ambient humidity max. 95% r.H., non-condensing
Ambient temperature -22...122°F [-30...50°C]
Storage temperature -40...176°F [-40...80°C]
Degree of Protection IP54, NEMA 2, UL Enclosure Type 2
Housing material UL94-5VA
Agency Listing cULus acc. to UL60730-1A/-2-14, CAN/CSA
E60730-1:02, CE acc. to 2014/30/EU and
2014/35/EU
Noise level, motor 45 dB(A)
Servicing maintenance-free
Quality Standard ISO 9001
Weight 1.4 lb [0.64 kg]
†Rated Impulse Voltage 800V, Type action 1.B, Control Pollution Degree 3.
Torque min. 180 in-lb, for control of damper surfaces up to 45 sq. ft.
Application
For on/off and floating point control 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, 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.
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 actuator 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 actuators
use a sensorless 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. The -S version is provided with 1 built-in auxiliary switch. This
SPDT switch is provided for safety interfacing or signaling, for example, for fan
start-up. The switching function is adjustable 0 to 95°. The auxiliary switch is
double insulated so an electrical ground connection is not necessary. Add-on
auxiliary switches or feedback potentiometers are easily fastened directly onto
the actuator body for signaling and switching functions.
Dimensions (Inches[mm])
5.47” [139]
4.06” [103]
2.49” [63.4]
1.18”
[30]
To center of
mounting slot.
AMX24-3 Technical Data Sheet
On/Off, Floating Point, Non-Spring Return, 24 V
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Date created, 02/10/2020 - Subject to change. © Belimo Aircontrols (USA), Inc.
