Expandable Area SensorPJ series


Base Unit

[Discontinued model]

This model has been discontinued.

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Base unit

No. of beam axes


Beam axis spacing

40 mm 1.57"

Maximum optical axis number

16 (PJ-50A × 1 + PJ-55A × 6)

Detection area

120 mm 4.72" (4 optical axes) to 600 mm 23.62" (16 optical axes)

Detecting distance

5 m 16.40'

Detectable object

Opaque material with a diameter of 50 mm or more

Light source

Infrared LED

Indicator lamp

Output (PJ-50R) and power (PJ-50T) : red LED, stable operation (PJ-50R) : green LED

Response time

15 ms or less


Control output

NPN open collector 100 mA max. (40 V max.), Residual voltage : 1 V max.

Control output

Operation mode

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

Noise resistance (power supply line)

350 V, pulse width : 1 µs (by way of a noise simulator)

Protection circuit

Reversed polarity, overcurrent protection, surge absorber


Power voltage

12 to 24 VDC (±10%), ripple (p-p) : 10% max.

Current consumption.

90 mA (total of T, R)*1

Environmental resistance

Enclosure rating


Operating ambientluminance

Incandescent lamp : 3,500 lux or less, sunlight : 12,000 lux or less

Operating temperature range

-20 to +50°C -4 to 122°F (no freezing)

Operating ambient humidity

35 to 85 % RH (No condensation)


10 to 55 Hz, 1.5 mm 0.06" double amplitude for 2 hours in each of the X, Y, and Z directions

Shock resistance

100 m/s2 in X, Y, and Z directions, 3 times respectively


Housing : Glass-fi bre reinforced plastic, Lens cover : PFA


Approx 785 g*2

*1 This is the value with a power supply voltage of 24 V. (80 mA for the PJ-50A with a power supply voltage of 12 V.)
*2 This is the weight including the 5 m cord.

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