Color Sensor
Color Sensor

Detection distance : 7-13mm

Output type : NPN output/PNP output

Power supply voltage : 12-24V DC

Light source type : RGB tricolor light source




FGS-31 Series
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Coaxial reflective optics and very fine light points of approximately 1mm x 5mm enabling highly accurate detection;

Optimal LED automatic selection function: the best color match can be selected from the three colors of R-G-B LEDs;

Built-in RGB tri-color light source color mode and color scale mode;

Built-in 12-bit A/D converter enables high precision judgments with resolutions up to 1/4,000;

4-digit display to confirm the amount of light input to the color scale and bottom color.


Model numberFGS-31NFGS-31P
Output methodNPN outputPNP output
Detection distance10±3mm
Supply voltage12~24V DC±10% Pulsation P-P10% or less
Power consumption

Normal mode: less than 750mW (less than 30mA of current consumption at 24V supply voltage)

ECO mode: less than 600mW (current consumption less than 25mA at 24V supply voltage

Instructional input  Low(ON) 0~2VDC

Outflow current 0.5mA or less Input impedance about 10kΩ

High(OFF) : 5V~+VDC or open

Output 1(OUT)

·Maximum inflow current: 50mA (Note 1) 

·Applied voltage: 30V DC or less (between output 1 and -0V)  

·Residual voltage: 1.5V or less [at 50mA inflow current (Note 1)

Output operation

Marking mode: ON when the light is on/ON when the light is not on when the teaching is automatically set type 

Color mode: ON when consistent / ON when inconsistent

Output 2(Reverse turn out)(OUT)

·Maximum inflow current: 50mA - Applied voltage: 30VDC or less (between output 2 and -0V)

·Residual voltage: 1.5V or less (when the inflow current is 50mA)

Output operationInversion action of output 1
Short circuit protectionyes
Response timeColor scale mode: 45us or less, color mode: 150us or less
Operation display lightOrange LED (light on when output is ON)
Mode display lightWhen 'RUN': Green LED, when 'TEACH', 'ADJ', 'COLOR', 'TIMER', 'PPO': Yellow LED
Digital display part4-digit red LED display
Sensitivity setting methodColor scale mode: 2-point teaching / fully automatic teaching, color mode: 1-point teaching
Set sensitivity fine-tuning functionyes
Timing functionON delay / OFF delay timing function equipped with valid / invalid conversion type
Protection structureIP67(IEC)
Operating ambient temperature-10~+55℃(no condensation or frost), storage: -20~+70℃
Use environment humidity35~85%RH, When saving:35~85%RH
Light sourceRed/green/blue LED
MaterialMain shell: PBT, display part: polycarbonate, operation button: silicon copper rubber, lens: glass
Cable0.2mm² 5 core rubber cable length 2m cable type
WeightAbout 120g
Wiring methodFive lines (brown: power positive; blue: power 0V; black: signal output; white: signal output; pink: teaching input)


Color Sensor

Color Sensor

 FGS-31说明书
FGS-31说明书
 FGS-31平面图
FGS-31平面图

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