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FS491

更新时间： 2024-11-21 14:55:11
品牌 Logo 应用领域
力特 - LITTELFUSE /
页数 文件大小 规格书
1页 303K
描述
The FS400 Series is a low leakage AC flasher designed to control LED, or resistive loads. This ser

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FS491 数据手册

  
Flashers andTower Lighting Controls  
Flashers  
FS491  
Description  
The FS491 is a low leakage AC flasher designed to control LED,  
or resistive loads. This product offers a solid-state output and  
may be ordered with an input voltage of 24V to 240VAC, in two  
ranges. It offers a factory fixed flash rate of 75 FPM or may be  
ordered with a fixed, custom flash rate ranging from 45 to 150  
FPM. The FS491 is the perfect solution for LED lamp flashing.  
Operation  
Upon application of input voltage, the output energizes and  
the ON time begins. At the end of the ON time, the output  
de-energizes and the OFF time begins. At the end of the OFF  
time, the output energizes and the cycle repeats as long as  
input voltage is applied.  
Reset: Removing input voltage resets the output and the  
flash sequence.  
Features & Benefits  
Wiring Diagram  
FEATURES  
BENEFITS  
L1  
N/L2  
No moving parts to arc and wear out, up to 100  
million operations under typical conditions  
Totally solid state  
V = Voltage  
L = Load  
R = Red Wire  
B = Black Wire  
W = White Wire  
Fully encapsulated  
Protects circuitry from shock, vibration and humidity  
Extremely low  
leakage current  
Ideal for use in LED lighting applications  
Specifications  
Technical Data  
Operation  
Flash Rate  
Custom Flash Rates  
ON/OFF Ratio  
Input  
ON/OFF solid-state flasher (continuous duty)  
Fixed at 75 FPM 20%  
45 - 150 FPM 20%  
≅ 50%  
Voltage  
Tolerance  
24, or 120 - 240VAC  
15%  
AC Line Frequency  
Output  
Load Type  
50/60Hz  
LED or resistive  
Output  
Bridge Rectifier & FET  
Maximum Load Rating  
120VAC to 240VAC  
Function Diagram  
0.5A steady state; 5A inrush  
Max. Load Leakage Current 250µA  
FLASHER (ON FIRST)  
Voltage Drop  
Mechanical  
Mounting  
Dimensions  
Protection  
Surge  
2V typical  
V = Voltage  
R = Reset  
L = Load  
T1 = ONTime  
T2 = OFFTime  
T1 ≅ T2  
Surface mount with one #8 (M4 x 0.7) screw  
Dia. 23.9 mm (0.94”); D 38.1 mm (1.5”)  
ON time plus OFF time equals one  
complete flash.  
IEEE C62.41 - 1991 Level A  
Encapsulated  
Circuitry  
Environmental  
Operating/Storage  
Temperature  
Humidity  
-20° to 60°C / -40° to 85°C  
95% relative, non-condensing  
≅ 1.1 oz (31 g)  
Weight  
© 2016 Littelfuse Protection Relays & Controls  
www.littelfuse.com/fs491  
Rev: 1-A-062016  
1

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