Digital Fibre Optic SensorsFS-N series (FS-neo)


Fibre Amplifier, M8 Connector Type, PNP


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1 output type



Input/Output configuration

M8 connector *1

Main unit/Expansion unit

Main unit

Control output

1 output
PNP open collector 24 V or less; maximum 100 mA or less, residual voltage 1 V or less

External input

1 input
Input time 2 ms (ON)/20 ms (OFF) or more, when selecting External calibration 25 ms (ON/OFF) or more

Response time

50 μs (HIGH SPEED)/250 μs(FINE)/500 μs(TURBO)/ 1 ms (SUPER) /4 ms (ULTRA)/16 ms (MEGA)

Multiple connections to Expansion units

0 units (expansion not possible)

Output toggle

LIGHT-ON/DARK-ON (switch-selectable)

Light source

Red, 4-element LED (Wavelength: 630 nm)

Timer function

Timer OFF/OFF-delay timer/ON-delay timer/One-shot timer

Protection circuit

Reverse polarity protection, Over-current protection, Surge absorber

Number of interference prevention units

0 units (connection not possible)

Case dimensions



Power voltage

12 to 24 V DC ±10% ripple (P-P) 10% or less

Current Consumption

Normal: 950 mW or less (39 mA max. at 24 V, 52 mA max. at 12 V) *2
Eco on (ALL): 850 mW or less (35 mA max. at 24 V, 44 mA max. at 12 V) *2
Eco full: 520 mW or less (21 mA max. at 24 V, 26 mA max. at 12 V)

Environmental resistance

Enclosure rating

IP66 *3*4


Operating ambient luminance

Incandescent lamp: 20,000 lux max., Sunlight: 30,000 lux max.

Operating ambient temperature

-20°C to +55°C (no freezing)

Operating ambient humidity

35 to 85% RH (No condensation)

Vibration resistance

10 to 55 Hz compound amplitude 1.5 mm, 2 hours for each of X, Y, Z axis

Shock resistance

500 m/s2, 3 times for each of X, Y, Z axis

Case material

Main unit: glass-reinforced PBT; Cover: Sulfonic resin



Glass-reinforced PBT


Approx 30 g

*1 Use a cable of 30 m or less.
*2 When the Power Mode is set to HIGH SPEED, 100 mW (4.0 mA) will be added.
*3 About the enclosure rating when a small-diameter fibre unit (the diameter of the cable is ø1.3 or ø1.0) is used.IP66/IP65 cannot be satisfied when the type whose diameter is ø1.3 and terminal can be separated (FU-4F/ 66/91/93/43/63/63T etc.) is used.When any small-diameter fibre units except for the above are used, IP65 is applied.
*4 In any of the following cases, the enclosure rating IP66/IP65 cannot be satisfied.• When the Fibre Unit and KEYENCE's M8 connector cable are not connected (Recommended conditions to tighten up the M8 connector: Tighten it by hand first.Then retighten it as much as 1/16-1/8 of a rotation with pliers.)• When the Fibre Unit and KEYENCE's M8 connector cable are not connected• When the dust cover of the Sensor Amplifier is open• When there is debris in the dust cover• When the waterproof adapter A/B are not used at the time of installation of a small-diameter fibre unit.

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