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THROUGH-BEAM PHOTO-ELECTRIC SENSOR PAIR

CAT # OSU-1130 (3 Reviews) Write a Review

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Product Description
SICK Optics WS15-D1130 / WE15-A1130.
Photo-electric sender and receiver pair detects the presence of an object when the beam between the two is interrupted. Useful in automation, alarm systems and door annunciators. When the beam is broken, the receiver produces a current that can be used to trigger an audio-visual signal or relay-operated device. 5 Meter range. Built-in LED alignment and power indicators. Modules are 38 x 21 x 16.2mm and can be front or side-mounted. Front-mount hardware is included. Operate on 10-30Vdc. Power supply not included. cULus.

· Operating voltage: 10-30VDC Class 2
· Output: ≤ 100Ma
· PNP / NPN output
· Range: 5 Meters
· Red pin-point LED
· Front or side mount: M18 x1 threaded bushing with snap ring and plastic nut. / Through holes on 24.1mm mounting centers.
· High immunity to ambient light due to background suppression that ignores stray background reflections.
· Highly visible LED indicators to reduce set-up time and simplify troubleshooting.
· 6' cables
Spec sheet available in PDF format.
WARNING: May cause cancer or reproductive harm.
California Prop. 65
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Customer Reviews (3 Reviews)

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Need connection diagram for a relay

Reviewer: from Vancouver, WA

Quality looks good. Would like to use this to close a relay that is rated for 12 Volts and about 220 ohms (60 ma. coil current).

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Connection for relay

Reviewer: from California Central Coast

Don't have the shipment yet, but the wiring
reference cited is the correct data.
Use the NPN scheme. The optical sensor output will be sinking the relay current to ground.
Connect your 24 volt supply (+) to the points marked NPN Sensor +24VDC, and to the point marked “Positive” +24VDC, which is the + coil terminal of your 12VDC relay.
From the – coil terminal of the 12VDC Relay, connect a 220 Ohm resistor, the other end of the resistor going to the point marked “Switched Negative” on the NPN sensor. Connect the point on the NPN sensor
marked “0VDC Negative to the (-) side of your 24 VDC supply (ground).

So, the current path that operates your 12VDC relay will be:
From Ground (- side of your 24 Volt supply)
to the internal switch contacts in the sensor,
out of that switch to through the path marked “Switched Negative”, through the 220 ohm dropping resistor to your 12 VDC relay coil (-) terminal, through the coil and out of the coil (+) terminal to the point marked “Positive +24 VDC”.
Wattage dissipated by the dropping resistor will be 12V X 60 mA (current value given by you)=0.72 W, so the resistor needs to be at least a 1W type. You need to use a relay with a built-in swamping diode, or connect a 1N4001 or equivalent diode across your 12 volt relay coil in reverse polarity. Otherwise the "NPN Sensor" could be damaged by the counter EMF generated when the relay coil is de-energized.
I can draw the schematic for all this on paper and photograph it but how would I upload the .png file to the review page on ALL Electronics.com? I hope this helps.

TEST

[Note from All Electronics: sorry there's no function on the site for adding an image to reviews.]

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Wiring Help? Opinions?

Reviewer: from New Mexico

This MIGHT be appropriate info for how to wire these. Others need to confirm.

https://automation-insights.blog/2018/02/14/an-easy-way-to-remember-pnp-and-npn-sensor-wiring/

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