Built-in amplifier photoelectric sensors

PZ2 series

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Square Transmissive Cable Type, NPN PZ2-51

PZ2-51 - Square Transmissive Cable Type, NPN






Detection distance

7 m 23.0'

Light source


Detectable object

Opaque material with an area of 30 mm2 or more

Hysteresis(of detecting distance)


Sensitivity adjustment

1-turn trimmer (240°)

Response time

1.5 ms max.

Operation mode

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

Indicator lamp

Output and power*1: Red LED, Stable operation: Green LED

Control output

NPN or PNP: 100 mA (40 V) max., Residual voltage: 1 V max.

Protection circuit

Reversed polarity, overcurrent protection, surge absorber


Power voltage

12 to 24 VDC ±10 %, Ripple (P-P) 10 % or less

Current consumption

Transmitter: 20 mA or less, Receiver: 25 mA or less

Environmental resistance

Enclosure rating


Ambient light

Incandescent lamp: 5,000 lux max., Sunlight: 20,000 lux max.

Ambient temperature

-20 to +55 °C -4 to 131 °F (No freezing)

Relative humidity

35 to 85 % RH (No condensation)

Vibration resistance

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

Shock resistance

1,000 m/s2, 6 times in each of the X, Y, and Z directions

Case material

Glass-fiber reinforced plastic


Mounting bracket x 2, Mounting screws x 4, Plate nut x 2


Approx. 50 g (including 2-m 6.6' connector cable)

*1 The power indicator is equipped with the PZ2-51 only.

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