OA0110 - Detector IFM - Free user manual and instructions

Product type	Retroreflective sensor (retroreflective photocell)
Brand	IFM
Model	OA0110
Range (on 80 mm honeycomb reflector)	Up to 80 mm
Power supply	24 V DC (typical, check label)
Connection	Follow diagram on label, use miniature fuse if necessary
Main functions	Non-contact detection, LED alignment, adjustable time delay, switching output, diagnostic output
LED indicators	Green (voltage), red (alignment), yellow (output active)
Alignment	Red LEDs on = correct alignment, blinking = poor alignment or contamination
Time delay adjustment	Selector 3 and S1 for modes A (delay on absence of object) and b (delay on object present)
Diagnostic output	5 Hz signal in case of degraded detection (contamination, poor adjustment)
Safety	Disconnect power before connection; use miniature fuse
Mounting	Attach reflector or reflective adhesive tape, align sensor and fix with bracket
Maintenance and cleaning	Clean lenses regularly to avoid contamination
Operating environment	Indoor, industrial use
Reflector compatibility	Honeycomb reflector or reflective adhesive tape

Frequently Asked Questions - OA0110 IFM

How to align the IFM OA0110 sensor?

Point the sensor towards the reflector. The red LEDs should be lit for precise alignment. If they blink, adjust the orientation until they are steady.

What does the blinking of the red LEDs mean?

The red LEDs blink when light reception is degraded, for example due to contaminated lenses or poor alignment. Clean the lenses or readjust the orientation.

How to set the time delay on the OA0110 sensor?

Use selector 3 to choose mode A (delay on object absence) or b (delay on object present). Switch S1 defines the output behavior (energized or de-energized after the edge). The duration t is adjustable via a potentiometer (not detailed in the manual).

What is the range of this sensor?

The range depends on the reflector used. With an 80 mm honeycomb reflector, the range is 80 mm. Check the device label for the exact value.

Can this sensor be used with other types of reflectors?

Yes, it is compatible with honeycomb reflectors and reflective adhesive tapes. The range may vary depending on the reflector.

What to do in case of poor alignment?

Check that the reflector is clean and securely attached. Adjust the sensor orientation using the mounting bracket until the red LEDs are continuously lit.

How to clean the sensor lenses?

Use a soft, lint-free cloth. If necessary, lightly moisten with water or glass cleaner. Avoid harsh solvents.

What does the diagnostic output mean?

The diagnostic output emits a 5 Hz signal when detection is degraded (contamination, poor adjustment). As soon as detection becomes reliable again, the output returns to a steady signal.

What type of fuse to use for electrical connection?

Refer to the device datasheet for the exact rating. Insert a suitable miniature fuse for the nominal current. In case of short circuit, check the device operation.

How to configure the output function (S1)?

Switch S1 defines whether the output is normally open (NO) or normally closed (NC) depending on the time delay mode (A or b). Refer to the wiring diagrams in the manual for exact connections.

USER MANUAL OA0110 IFM

Functions and features

In conjunction with a prismatic reflector or reflective tape the retroreflective 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 5Hz 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.