OW0001 - Infrared detector IFM - Free user manual and instructions

Product type	Fiber optic infrared detector
Brand	IFM
Model	OW0001
Category	Infrared detector
Switching temperature	500°C / 900°C (depending on type)
Ambient temperature of amplifier	Max 60°C
Permissible temperature of fiber optic	Max 250°C
Opening angle	Depends on the lens (calculable by formula)
Detection distance	Up to 5 m (beyond, radiation losses)
Detection diameter	Calculable: d = 2 × I × tan(α/2) + Ø
Electrical connection	DC PNP, DC NPN, AC/DC
Power supply	10‑30 V DC or 24‑240 V AC (estimate)
Electrical protection	Miniature fuse recommended
Output	Not short-circuit protected (AC/DC)
Wire colors	BN = brown, BU = blue, BK = black, GN/YE = green/yellow
Included accessories	Mounting base (E20426), additional lens (optional)
Spare parts	Replacement fiber optic, lens, base
Maintenance	Clean the lens with a soft, dry cloth; check proper operation periodically
Safety	Disconnect before connection; use a fuse; avoid short circuits
Main functions	Contactless infrared detection, signal switching, temperature monitoring
Repairability	Fiber optic replaceable by user

Frequently Asked Questions - OW0001 IFM

What is the switching temperature of the OW0001 detector?

The switching temperature is 500°C or 900°C depending on the device type.

How to mount the amplifier?

Mount the amplifier outside the hot zone (max ambient temperature 60°C). Use the optional mounting base E20426.

How to replace the fiber optic?

Remove the nut and washer, remove the rubber gasket, take out the used fiber. Slide the nut, washer, and gasket onto the new fiber, insert it into the base, replace the gasket, and tighten the nut.

What is the detection diameter?

The detection diameter is calculated with the formula d = 2 × I × tan(α/2) + Ø, where I is the detection distance, α is the opening angle, and Ø is the lens diameter.

How to electrically connect the device?

De-energize the installation. Connect according to the diagram: DC PNP, DC NPN or AC/DC. A miniature fuse is recommended. Wire colors: BN = brown (+), BU = blue (-), BK = black (output), GN/YE = ground.

What to do in case of a short circuit?

The AC/DC output is not short-circuit protected; a short circuit can destroy the device immediately. Check operation after any short circuit.

What is the maximum detection distance?

Beyond 5 meters, radiation losses in the air become significant. The object temperature must then be clearly higher than the switching temperature.

Can an additional lens be used?

Yes, an additional lens is available as an accessory. It allows increasing the range and precisely adjusting the switching point.

How to clean the detector?

Clean the lens with a soft, dry cloth. Avoid aggressive solvents. Check proper operation regularly.

What accessories are available?

Accessories include the mounting base E20426, an additional lens, and replacement fiber optics.

USER MANUAL OW0001 IFM

Function and features

Infrared heat sensors absorb the heat radiation of objects and convert it into a switching signal.

They are used for object detection or temperature monitoring.

Switching temperature 500^ / 900^ (depending on the type of unit).

Installation

Mount the switching amplifier outside the hot area (ambient temperature max. 60^ ). A special mounting base is available as accessory (order no. E20426) for simple mounting. Mount the fibre optics in the hot area (max. 250^ ) in the required sensing distance. Use a lens attachment to extend the distance and to set the switch point more accurately (available as accessory).

The object must at least have the switching temperature of the sensor and must cover the visible area which depends on the chosen angle of aperture and sensing distance.

Notice! Do not bend the fibre optics sharply.

Calculation of diameter of visible area/sensing distance/angle of aperture

$$ d = 2 \times / x \tan \frac {\alpha}{2} + \varnothing $$

$$ I = 0. 5 \times \frac {d - \varnothing}{\tan \frac {\alpha}{2}} $$

$$ \alpha = 2 \times \tan^ {- 1} \left(\frac {d - \varnothing}{2 \times I}\right) $$

= angle of aperture

l = sensing distance

d = diameter of visible area

= lens diameter

Sensing range diagram:

In the event of ranges of >5m radiation losses must be taken into account. The temperature of the object should therefore be much higher than the switching temperature of the sensor.

Electrical connection

Disconnect power, then connect the unit according to the wiring diagram

DC PNP

DC NPN

AC/DC*

Note: insert a miniature fuse according to the technical data sheet, if specified. Recommendation: check the unit for reliable function after a short cirucit Core colours of ifm sockets: BN = brown, BU = blue, BK = black, GN/YE = green/yellow.

*Output not short-circuit protected.

Short circuit can lead to immediate destruction of the unit.

Replacement of fibre optics

Remove the nut 1 and washer 2.

Carefully remove the rubber packing 3 from the connection piece.

Remove the faulty fibre optics 4.

Slide the supplied new nut 1, washer 2, packing 3 onto the replacement fibre optics.

Insert the replacement fibre optics until the end into the hole of the switching amplifier provided for this.

Press the packing 3 into the connection piece.

Secure the replacement fibre optics by tightening the nut 1.

Operation

Check the safe functioning of the sensor.

If in the application wrong switching occurs due to background radiation (e.g. ovens), use units with higher switching temperatures.