Technical Data
283663
Power Supply
24 VAC, ±10%, 50/60 Hz, 24 VDC, 0% / +50%
Power consumption in operation
32 VA
Power consumption in rest position
5 W, 8.5 VA, End stop 47 VA, 2 A slow blow fuse *
Transformer sizing
40 VA (class 2 power source)
Shaft Diameter
1/2…1.05” round, centers on 3/4” with insert, 1.05” without insert
Electrical Connection
18 GA appliance cable, 3 ft [1 m], with 1/2” conduit connector
Overload Protection
electronic throughout 0…95° rotation
Electrical Protection
actuators are double insulated
Angle of rotation
95°
Direction of motion motor
selectable by ccw/cw mounting
Torque motor
180 in-lb [20 Nm]
Direction of motion fail-safe
reversible with cw/ccw mounting
Position indication
Mechanical
Running Time (Motor)
<25 s
Running time fail-safe
<15 s
Ambient humidity
max. 95% r.H., non-condensing
Ambient temperature
32…122°F [0…50°C]
Storage temperature
-40…176°F [-40…80°C]
Degree of Protection
IP40, NEMA 1
Housing material
galvanized steel
Gears
steel, permanently lubricated
Agency Listing
cULus listed to UL60730-1A:02; UL 60730-2-14:02 and CAN/CSA-E60730-1:02; Listed to UL 2043 – suitable for use in air plenums per Section 300.22(c) of the NEC and Section 602.2 of the IMC
Noise level, motor
70 dB(A)
Noise level, fail-safe
73 dB(A)
Servicing
maintenance-free
Quality Standard
ISO 9001, RoHS (EU-Directive 2011/65/EU)
Weight
5.9 lb [2.5 kg]
† UL File XAPX.E108966
Fire & Smoke, 180 in-lb @ 350°F for 30 min., 25 s drive, 15 s spring
Application
The FSAF..A actuators provide true spring-return operation for reliable fail-safe application and positive close-off on UL555S dampers. The spring-return system provides constant torque to the damper with and without power applied to the actuator. The FSAF..A series provides 95° of rotation and is provided with a graduated position indicator showing 0…95°.
Operation
The FSAF_A series actuators are mounted to the damper axle shaft or jackshaft (1/2” to 1.05”) via a cold-weld clamp. Teeth in the clamp and V-bolt dig into the metal of both solid and hollow shafts maintaining a perfect connection. The specially designed clamp will not crush hollow shafts. The bottom end of the actuator is held by an anti-rotation strap or by a stud provided by the damper manufacturer. The actuator is mounted in its fail safe position with the damper blade(s) closed. Upon applying power, the actuator drives the damper to the open position. The internal spring is tensioned at the same time. If the power supply is interrupted, the spring moves the damper back to its fail-safe position.
Note on linkage kits.The correct leg kit for the FSAF_A series is the older ZG-AF US as the actuator has a classic AF frame. However, the spline is the new generation type and the crank arm required is the KH-AFB.
Dimensions (Inches[mm])
Safety Notes
* Neither UL nor Belimo require local over-current protection. The FSAF_A actuators draw higher peak current when driving against any type of stop. After 10 seconds current drops to the lower holding level. If used, this requires the value of a local fuse or breaker to be increased to avoid nuisance opening or tripping. A 2 A slow blow should be used for AC 24 V. A 0.5 A slow blow should be used for AC 120 V. A 0.25 A slow blow should be used for AC 230 V and a 0.3 A slow blow for AC 208 V.
Transformers:
Note that while a 24 V 100 VA transformer would handle 3 actuators run current, a 4 A breaker or plug fuse is insufficient. A 6 A slow blow would be required.
FSAF24A Technical Data Sheet
On/Off, Spring Return, AC/DC 24 V
800