Quick Delivery and Comprehensive Support Most products are in stock and ready for same-day shipping - contact us to get your order started
  1. Home
  2. Products
  3. Sensors
  4. Fiber Optic Sensors
  5. Digital Fiber Optic Sensors
  6. Models
  7. Expansion Unit (Zero Line Type)

Digital Fiber Optic SensorsFS-N40 series

Expansion Unit (Zero Line Type)



Select Language




Zero Line Type

Main unit/expansion unit

Expansion unit

Number of control outputs


Light source LED

Transmitter side: Red, four-element LED (wavelength: 660 nm)

Response time

23 µs (S-HSPD*2) /50 µs (HSPD*3) /250 µs (FINE) /500 µs (TURBO) /1 ms (SUPER) /4 ms (ULTRA) /16 ms (MEGA) /64 ms (TERA)

External input

Input time: 2 ms (ON) /20 ms (OFF) or longer*4

Unit expansion

Up to 16 units (17 units connected in total including the main unit) . However, each dual output type will be treated as two expansion units.

Protection circuit

Protection against reverse power connection, output overcurrent, output surge, and reverse output connection

Mutual interference prevention

S-HSPD/HSPD: 0 units, FINE: 4 units, TURBO/SUPER/ULTRA/MEGA/TERA: 8 units (The mutual interference prevention values are twice those shown here when Double is set.)

Power supply

Power voltage

10 to 30 VDC (including 10 % ripple (P-P) or less) , class 2 or LPS*5

Power consumption

During normal operation: 870 mW or less (34 mA or less at 24 V/62 mA or less at 12 V)
ECO ON: 800 mW or less (31 mA or less at 24 V/56 mA or less at 12 V)
ECO FULL: 710 mW or less (28 mA or less at 24 V/49 mA or less at 12 V)*6

Environmental resistance

Ambient light

Incandescent lamp: 20,000 lx or less, sunlight: 30,000 lx or less

Ambient temperature

-20 °C -4 °F to +55 °C +131 °F (no freezing)*7

Vibration resistance

10 to 55 Hz; double amplitude 1.5 mm 0.06"; 2 hours each for X, Y, and Z axes

Shock resistance

500 m/s2; 3 times each for X, Y, and Z axes

Case material

Main unit and cover: polycarbonate


Approx. 23 g

*1 This counts as 1 output when connecting multiple units to the FS-MC8N/P, NU Series.
*2 Restrictions when S-HSPD is selected
Area detection, Area % Mode, DATUM, Rising edge, and Falling edge cannot be selected for Detection Mode.
Output timer, Limit Detection, and Display Gain cannot be used.
FULL cannot be selected for the ECO function.
*3 Restrictions when HSPD is selected
Display Gain cannot be used.
*4 The input time becomes 25 ms (ON)/25 ms (OFF) when external calibration input is selected.
*5 When expanding the system to 9 or more units, use a power supply voltage of 12 V or higher.
*6 The load current is excluded. The power consumption including the load when the maximum number of units are connected is 38 W max.
*7 When expanded by 1 to 2 units: -20°C -4°F to +55°C +131°F. When expanded by 3 to 10 units: -20°C -4°F to +50°C +122°F.
When expanded by 11 to 16 units: -20°C -4°F to +45°C +113°F. When using 2 outputs, 1 unit is counted as 2 units.
The prescribed values for the ambient temperature assume that the sensor amplifi er has been mounted on a DIN rail installed on a metal surface.
Exercise special care when installing the product in an airtight space.

  • General Catalog Request
  • Trade Shows and Exhibitions
  • eNews Subscribe