Multi-voltage power supply,built-in amp.photoelectric sensors

PW series

This model has been discontinued.
Compliance with the certification standard is ensured as of the time of shipment from our company.

Transmissive Main Unit PW-51J

PW-51J - Transmissive Main Unit

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

Data Sheet (PDF)


CAD Data

360°view (3D PDF)





Thrubeam:with timer

Detecting distance

10 m 32.8' *1

Light source

Infrared LED

Detectable object

Opaque materials
(15 x 15 mm 0.59" min.)*1


Sensitivity adjustment

Response time

20 ms max.

Operation mode

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

Indicator lamp

Output: Red LED, Power: Red LED (thrubeam type only)

Timer function

0.1 to 5 s *2

Control output

SPST-NO relay contact, 250 VAC 3 A max., 30 VDC 3 A max. (resistive load)

Noise resistance

Square-wave noise by noise simulator: 1 kV p-p, 1 µs (across power terminals)


Power voltage

24 to 240 VAC ±10 %, 50/60 Hz, 12 to 240 VDC ±10 %

Power consumption

3 VA max. (both transmitter and receiver)

Environmental resistance

Enclosure rating


Insulation resistance

20 MΩ min. (between each terminal and case, using insulation resistance metre of 500 VDC)

Ambient light

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

Ambient temperature

-10 to +60 °C 14 to 140 °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

100 m/s2, 3 times in each of the X, Y, and Z directions


Housing: PBT, Lens: acrylic, Terminal cover: Polysulfone


Transmitter: Approx. 70 g, Receiver: Approx. 95 g

*1 Opaque materials of 3 x 6 mm 0.12" x 0.24" with slit plate attached (at detecting distance of 1.5 m 4.9')
*2 ON-delay, OFF-delay, and One-shot modes are selectable.

Data Sheet (PDF) Other Models