OL5020 - Laser pointer IFM - Free user manual and instructions

Product type	Laser photoelectric barrier
Brand	IFM
Model	OL5020
Laser class	2 (laser class 2 radiation)
Range	Indicated on the device label
Power supply	10–30 V DC (typical)
Output	PNP or NPN depending on model
Output function	Normally closed (NC) or normally open (NO) programmable
Diagnostic output	Max load 10 mA
LED indicators	Green (ready), Yellow (switching), Red (fault)
Sensitivity adjustment	Static or dynamic via teach-in (object / no object)
Adjustment aid	Push button on transmitter, temporary beam increase (15 min)
Mounting	On mounting bracket, precise alignment of transmitter/receiver
Electrical connection	See diagram on page 20 or cell label
Maintenance	Clean lenses with a soft cloth, no solvents
Safety	Do not look into the light source; affix warning labels
Operation	Plug and play, set to maximum range by default
Programming mode	Activation by long press (2 s) on push button
Reset	In case of internal error: cycle power off and on
Housing material	Plastic / metal (typical)

Frequently Asked Questions - OL5020 IFM

How to install the OL5020 photoelectric barrier?

Fix the receiver (model OLE-...) with the supplied bracket, then orient the transmitter (model OLS-...) towards the receiver. The light spot must hit the receiver lens. Ensure that the mounting position cannot change, avoiding vibrations.

How to align the transmitter and receiver?

Use the transmitter's adjustment aid: press the push button to temporarily increase beam intensity, making the spot visible. Adjust the orientation until the spot reaches the receiver lens. The intensity returns to normal after about 15 minutes or by pressing again.

How to adjust sensitivity for static objects?

1. Press the push button for about 2 seconds until the red LED flashes (programming mode). 2. Place the object in the beam and press once. 3. Remove the object and press once. The green LED lights up to confirm the setting.

How to adjust sensitivity for moving objects?

1. Activate programming mode (long press of 2 s). 2. Let at least two objects pass through the beam for about 1 second. 3. Repeat the operation. The green LED lights up after confirmation. If the adjustment fails, the red LED flashes.

How to program the output function (NC/NO)?

Press the push button for about 10 seconds. All LEDs turn off, then the red LED flashes rapidly after 2 seconds, the yellow and green LEDs flash alternately. After 8 seconds, the output switches from NC to NO (or vice versa).

What do the different LEDs mean?

Green LED on: device operational. Yellow LED on: output switched. Red LED on: detection error (misadjustment, contamination). Yellow + red flashing alternately at 2 Hz: output short circuit; at 1 Hz: internal error.

What to do in case of fault (red LED)?

Check alignment, lens condition (clean if necessary) and obstacles. If the red LED persists, consult the diagnostic output. In case of internal error, cycle the power off and on.

How to clean the lenses?

Use a soft, dry cloth. Do not use solvents or abrasive products that could damage the plastic lenses.

What are the safety precautions for class 2 laser?

Do not look directly into the laser beam. Affix the provided warning labels near the cell. The radiation is class 2, but prolonged exposure can be dangerous.

How to use the diagnostic output?

The diagnostic output (pin 2) switches in case of detection error (misalignment, contamination) after about 4 seconds. It resets 4 seconds after returning to normal operation. In case of short circuit, it switches immediately and resets about 2 seconds after the fault is resolved.

USER MANUAL OL5020 IFM

Through-beam sensor OL laser

Technical line drawing of a mechanical sensor or pressure sensor component (no text or symbols)

Function and features

The through-beam sensor detects objects and materials without contact and indicates their presence by a switched signal.

Range (r): see type label.

Laser radiation; laser protection class 2.

Do not look directly into the beam!

The enclosed labels (warning laser) must be applied in close proximity to the unit.

Electrical connection

Isolate power, then connect unit (see page 20 or type label).

Load of the function check output (fc output): max. 10mA.

Installation

LEDs red yellow green push button receiver LED yellow push button LED green transmitter

Fix the receiver (type OLE-...) in position. Align the transmitter (type OLS-...) towards the receiver and tighten in the same way. The light spot must hit the receiver lens.

Maximum range is only possible with precise alignment.

Mount the unit so that the mounting position cannot change (in particular avoid high vibrations!). Laser units with a very small light spot diameter are highly focussed; the slightest change in the mounting position will result in misalignment.

Adjustment aid:

For the alignment the transmitter incorporates an adjustment aid. By pressing the setting button on the transmitter the intensity of the transmitted light is increased so that the light spot is clearly visible. After pressing the button again the transmitted light is set again to normal intensity. If the button is not pressed again, the transmitted light is set to normal intensity after about 15 min.

NB: Commissioning

The through-beam sensor is supplied ready to operate (plug and play) set at the max. sensing range. This is sufficient if the through-beam sensor can operate with maximum excess gain (highest contrast). The following setting procedures should only be necessary in less straightforward applications, for example if partly transparent objects must be detected.

Setting of the sensitivity with stationary objects

1	Activate the programming mode of the unit.Press for about 2s until the red LED flashes.
	The red LED goes out; the yellow and green LEDs flash alternately.The unit is in the programming mode.
2	Set the sensitivitywithobject.
	Press once.
	The yellow and green LEDs go out for approx. 1s,then flash again alternately.

3	Set the sensitivitywithoutobject.Press once.
	The yellow and green LEDs go out for approx. 1s,after approx 3s the green LED is on.The unit is in the operating mode.

You can also proceed in reverse order: first setting without the object, then with the object.

If the setting of the sensitivity is not possible (e.g. object signal and background signal are about the same), the red LED flashes after step 3 for approx. 2s. The unit then passes into the operating mode with the sensitivity being unchanged.

If the setting button is not activated for 15 minutes during the programming process, the unit passes automatically into the operating mode with the sensitivity being unchanged.

Setting of the sensitivity with moving objects

1	Activate the programming mode of the unit.Press for about 2s until the red LED flashes.
	The red LED goes out; the yellow and green LEDs flash alternately.The unit is in the programming mode.

2	During the measurement (about 1s) allow at least two objects to move through the detection area.
	Pi
	The yellow and green LEDs go out for approx. 1s, then flash again alternately.

3	During the measurement (about 1s) allow at least two objects to move through the detection area.Pr
	The yellow and green LEDs go out for approx. 1s, after approx. 3s the green LED is on.The unit is in the operating mode.

If the setting of the sensitivity is not possible (e.g. object signal and background signal are about the same), the red LED flashes after step 3 for approx. 2s. The unit then passes into the operating mode with the sensitivity being unchanged.

If the setting button is not activated for 15 minutes during the programming process, the unit passes automatically into the operating mode with the sensitivity being unchanged.

Setting of the maximum sensitivity

• Go into the programming mode (step 1).
• Interrupt the light beam.
• Press the setting button twice (see steps 2 and 3).

Programming the output function

receiver

Press for 10s.

The red LED starts to flash fast after 2s. Then the yellow and green LEDs flash alternately. After 8s all LEDs go off, the output function has changed from light-on mode to dark-on mode (or vice versa).

Operation

Check the safe functioning of the unit. Display by LEDs and by the function check output.

LED green is lit Unit is ready for operation.
LED yellow is lit Output is switched.
LED red is lit	Error in object detection, e.g. maladjustment, soiling of the lenses.
LEDs yellow + red	Flash alternately, 2 Hz: output short-circuited. Flash alternately, 1 Hz: internal malfunction (output is not switched).

Function check output

• Switches in the case of incorrect object detection (error in object detection, maladjustment, soiling of the lenses) after approx. 4 s, it switches back approx. 4 s after the object is again correctly detected.
• Immediately switches in the case of a short circuit of the switching output, it switches back approx. 2 s after the fault has been rectified.
• Immediately switches in the case of an internal fault, it is only switched back by turning off the operating voltage and then on again.

Maintenance

Keep the plastic lenses of the sensor free from soiling.

For cleaning do not use any solvents or cleaning agents which could damage the plastic lenses.

Sensor with connector

Sensor with connector

Sensor with connector