OA0105 - Motion detector IFM - Free user manual and instructions

Product type	Reflex motion detector
Brand	IFM
Model	OA0105
Category	Motion detector
Range	See label (value on honeycomb reflector Ø 80 mm)
Power supply	10-30 V DC (estimate)
Output	Switching (yellow LED)
Main functions	Non-contact detection, switching signal, adjustable delay, diagnostic output
LED indications	Green (power), Red (reception), Yellow (output)
Settings	Sensitivity, output function, time function, delay duration
Electrical connection	According to label, disconnect power before
Mounting	Attach reflector, align sensor, use mounting bracket
Maintenance and cleaning	Clean lenses regularly to prevent soiling
Safety	Disconnect power before any connection or maintenance
Spare parts and repairability	Honeycomb reflector, reflective adhesive tape, mounting bracket
Dimensions (estimate)	Approx. 100 x 70 x 35 mm
Weight (estimate)	Approx. 150 g
Operating temperature (estimate)	-25 to 60 °C
Approvals	Not specified (typical industrial)
Warranty	Not specified, refer to dealer

Frequently Asked Questions - OA0105 IFM

How to align the OA0105 detector?

First attach the reflector or reflective adhesive tape. Align the reflex cell and secure it with a mounting bracket. Use the red LEDs: if they are steadily lit, alignment is accurate; if they flash, readjust. Precise alignment is required for optimal range.

What does the flashing of the red LEDs mean?

The red LEDs flash in case of misalignment or poor reception (e.g., dirty lenses). Make sure the lenses are clean and the reflector is properly positioned.

How to set the delay on the detector?

Adjustment is made via the selectors. Selector 3 chooses the mode: position 'a' for delay on 'no object' signal, position 'b' for delay on 'object present' signal. Selectors S1 and the time potentiometer t allow configuring the output function and delay duration. Refer to the diagram in the manual.

What is the maximum range of the OA0105?

The exact range is indicated on the device label, measured with a honeycomb reflector of diameter 80 mm. In general, IFM reflex detectors have a typical range of 0 to 8 meters depending on the model. Check your device's label.

What to do if the yellow LED does not light up?

First check that the power supply voltage is present (green LED on). If the green LED is off, check the electrical connection and fuse. If the green LED is on but the yellow is not, the detector is not receiving a signal or the object is not being detected properly. Check alignment and lens cleanliness.

How to clean the detector lenses?

Use a soft, dry or slightly damp cloth (clean water) to clean the lenses. Avoid harsh solvents. Regular cleaning prevents soiling that could affect detection.

Can I use the OA0105 without a reflector?

No, this detector is a reflex system that requires a reflector (honeycomb or reflective adhesive tape) to operate. The beam emitted by the transmitter is reflected by the reflector back to the receiver. Without a reflector, detection is impossible.

What is the recommended supply voltage?

The typical supply voltage for IFM detectors is 10 to 30 V DC. Check your device label for the exact value. Insert a miniature fuse according to the datasheet if specified.

How to reset after a short circuit?

After eliminating the cause of the short circuit, disconnect power and then reconnect it. Check the device's proper operation. The manual recommends checking operation after a short circuit.

What accessories are needed for installation?

You will need a reflector (honeycomb or reflective adhesive tape) and a mounting bracket for the sensor. The electrical connection cable must comply with the label indications.

USER MANUAL OA0105 IFM

Technical line drawing of a rectangular electronic device with mounting holes and a connector (no text or symbols)

Functions and features

In conjunction with a prismatic reflector or reflective tape the retro-reflective sensor detects objects and materials without contact and indicates their presence by a switched signal.

Range: see type label (values referred to prismatic reflector with ∅ 80mm).

Controls and indicators

Electrical connection

Disconnect power before connecting the sensor.

Connection strictly to the indications on the type label.

Note: insert a miniature fuse according to the technical data sheet, if specified.

Recommendation: check the unit for reliable function after a short circuit

Installation

Fix the prismatic reflector / reflective tape in desired position. Align the photocell and fix it by means of a mounting device.

Following electrical connection the photocell can be set exactly by means of the LED display:

• The red LEDs light if setting is exact.
• They flash if setting is inexact.
  • Maximum range only with precise alignment.

Setting

Set the sensitivity, the output function, the time function as well as the type and duration of the time delay.

Switch 3 = a:

The signal “no object present” is transferred to the switching output after a delay.

• In the case of S1 = the output switches OFF after the falling edge + t.
• In the case of S1 = the output switches ON after the falling edge + t.

A pulse during the time t triggers the timer again.

Switch 3 = b:

The signal “object present” is transferred to the switching output after a delay.

• In the case of S1 = the output switches ON after the rising edge + t.
• In the case of S1 = the output switches OFF after the rising edge + t.

A pulse during the time t triggers the timer again.

Operation

Check the safe functioning of the photocell.

Display by LEDs and function-check output.

• Green LED is lit = supply voltage o.k.
• Red LEDs are lit = light reception (no object between photocell and reflector).
• Red LEDs flashing = reception deteriorating (e.g. by soiling of the lenses or maladjustment).
• Yellow LED is lit = output switched.

The function check output indicates a wrong object detection (soiling of the lenses, maladjustment) by means of a 5 Hz signal. When the object is again clearly detected, the output provides again a continuous signal.

Maintenance: Keep the lens of the sensor free from soiling.