OJ5045 - Detector IFM - Free user manual and instructions

Product type	Optical proximity sensor (direct reflection with background suppression)
Brand	IFM
Model	OJ5045
Category	Sensor
Supply voltage	10-30 V DC
Power consumption	< 30 mA
Range	Up to 2 m (on white paper 200x200 mm)
Output type	PNP or NPN (configurable)
Connection	4 wires: brown (L+), blue (L-), black (output), white (programming)
Output function	Normally open / normally closed (programmable)
Programming mode	By push button or programming wire (white)
Electronic lock	Yes (via programming wire)
LED indication	Green (power), yellow (output), red (error)
Protection	Reverse polarity, short-circuit
Operating temperature	-25 °C to +60 °C
Protection rating	IP67
Housing material	Plastic
Dimensions (approx.)	30 x 20 x 15 mm
Weight (approx.)	50 g
Mounting	By supplied mounting clip or side holes
Maintenance	Clean the lenses with a soft dry cloth
Safety	Disconnect power before any connection
Spare parts	Mounting clip available as an option

Frequently Asked Questions - OJ5045 IFM

How to adjust the OJ5045 sensor?

Set the device to programming mode by pressing the button for about 2 seconds until the red LED flashes. The yellow and green LEDs then flash alternately. To adjust with the object, press the button once. To adjust without object (background), press once more. The sensor is now calibrated. You can also use the programming wire (white) by connecting it to L+ (PNP) or L- (NPN) for the corresponding time.

What to do if the red LED flashes after adjustment?

A red flash after step 3 indicates that adjustment is not possible, usually because the signals from the object and background are too similar. The sensor then returns to operating mode without changing the settings. Try adjusting the angle or distance.

How to wire the OJ5045 sensor?

The wires are: brown (L+, 10-30 V DC), blue (L-), black (switching output), white (programming wire). For PNP output, the output switches to L+. For NPN, to L-. Make sure to cut off power before connection.

What is the maximum range of the sensor?

The maximum range is indicated on the sensor label, measured on white paper 200x200 mm. It can reach up to 2 m depending on the model. The actual range depends on the reflectivity of the object.

How to perform the maximum range adjustment?

Enter programming mode (step 1). Orient the sensor so that neither the object nor the background receives light (distance > max. range). Press the button twice (steps 2 and 3) to adjust without object then with object. You can also use the programming wire.

How to lock or unlock the sensor?

To lock, activate the programming wire (white) by connecting it to L+ (PNP) or L- (NPN) for about 15-20 seconds. To unlock, repeat the same operation.

What do the different LEDs on the sensor mean?

Green LED on: device is operational. Yellow LED on: output is switched. Yellow + red flash alternately at 2 Hz: output short-circuit. At 1 Hz: internal error (output not switched).

How to clean the sensor lenses?

Use a soft dry cloth to clean the sensor lenses. Avoid solvents or abrasive products. Regular maintenance ensures reliable detection.

Can the sensor detect transparent objects?

The OJ5045 sensor is designed for detecting opaque objects. Detection of transparent objects may be difficult. For transparent objects, it is recommended to use a fiber optic sensor or an ultrasonic sensor.

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

The output function can be programmed via the programming wire (white). Refer to page 18 of the manual for details. Generally, connect the white wire to L+ (PNP) or L- (NPN) for a specific duration to toggle between normally open and normally closed.

USER MANUAL OJ5045 IFM

Function and features

The diffuse reflection sensor detects objects and materials without contact and indicates their presence by a switched signal.

Range (r):

see type label (value referred to white paper 200mm× 200mm ).

Electrical connection

Isolate power, then connect the unit.

DC PNP DC NPN

Core colours: BN = brown, BU = blue, BK = black, WH = white.

Programming of the output function by push button or programming wire (see page 12).

Installation

* In the following sections installation and set-up are described using the example of the type with front lens. The functions of the units with side lens are identical.

Align the photocell and fasten it to a mounting fixture.

Mounting of the series OJ51xx

The units of the OJ51xx series have two fixing holes on the side for mounting. A mounting fixture is not supplied.

Maximum range is only possible with precise alignment.

The objects to be detected are to move transversally to the lens of the

unit. In case of other directions of movement it should be tested before whether safe functioning is guaranteed.

For demanding applications (small distance between the object and the background) we recommend the following mounting positions:

• In case of shiny background surfaces and less shiny object surfaces the sensor should be mounted vertically to the background surface.
• In case of shiny object surfaces and less shiny background surfaces the sensor should be mounted at an angle of approx. 5 - 10^ .

Installation of the supplied mounting fixture

Secure the mounting fixture with the screws supplied, then slide the unit into the slot of the fixture until the spring clicks home.

To remove the unit press the spring down with a screwdriver and slide the unit out.

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	Setting with object. Press once.
	The yellow and green LEDs go out for approx. 1s, then flash again alternately.

3	Setting without object. The background must be within the maximum range. 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.

• The sensitivity can also be set in exactly the same way using the programming wire (pin 2 / WH). To activate the functions the programming wire is connected for the appropriate time to L+ (pin 1 / BN) for PNP units or to L- (pin 3 / BU) for NPN units. Feedback: If setting was not successful via the programming wire, the output will switch for 2s. The unit then reverts to the operating mode with the sensitivity unchanged.

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).
• Align the unit so that no light is received by the object or the background (min. distance > max. range).

• Press the setting button twice (see steps 2 and 3).

• The maximum sensitivity can also be set in exactly the same way using the programming wire (pin 2 / WH). To activate the functions the programming wire is connected for the appropriate time to L+ (pin 1 / BN) for PNP units or to L- (pin 3 / BU) for NPN units.

Electronic lock

Activate the lock by connecting the programming wire for about 15s - 20s*.

De-activate the lock by connecting the programming wire again for 15s - 20s^* .

• To activate the functions the programming wire (pin 2 / WH) is connected to L+ (pin 1 / BN) for PNP units or to L- (pin 3 / BU) for NPN units for the appropriate time.

Programming the output function*

• The output function can be programmed in exactly the same way using the programming wire (pin 2 / WH). To activate the functions the programming wire is connected for the appropriate time to L+ (pin 1 / BN) for PNP units or to L- (pin 3 / BU) for NPN units.

Operation

Check the safe functioning of the unit. Display by LEDs.

LED green is lit U	Unit is ready for operation.
LED yellow is lit O	Output is switched.
LEDs yellow + red	Flash alternately, 2 Hz: output short-circuited. Flash alternately, 1 Hz: internal malfunction (output is not switched).

Maintenance

Keep the lens of the sensor free from soiling.