OA5101 - Lighting IFM - Free user manual and instructions

Product type	Photoelectric barrier
Brand	IFM
Model	OA5101
Category	Lighting
Range	Indicated on the label
Power supply	Direct current (DC) for devices with test input
Supply voltage	10-30 V DC (typical)
Electrical connection	According to label indications, miniature fuse recommended
Mounting	On mounting bracket, precise emitter/receiver alignment
Switching function	NO/NC adjustable (S1)
Timing	Adjustable (rising/falling edge, duration t)
Test input	Yes (disables emission, for DC devices)
Diagnostic output	Yes, 5 Hz signal in case of poor detection
LED indicators	Green (power), Red (reception), Yellow (output)
Dimensions (approx.)	60 x 30 x 30 mm
Weight (approx.)	100 g
Maintenance	Regular cleaning of lenses
Safety	Disconnect power before connection; use a fuse
Documentation	PDF manual 10 pages, available in several languages
Application	Non-contact detection of objects and materials

Frequently Asked Questions - OA5101 IFM

How to connect the device?

De-energize the installation, then connect strictly according to the label indications. Insert a miniature fuse if specified.

How to align the emitter and receiver?

Mount the receiver (OAE...) with a bracket, orient the emitter (OAS...) towards the receiver. The red LEDs of the receiver are lit when alignment is precise and flash when misaligned.

What is the test input for?

The test input (test at L-) disables light emission. If no object is present, the receiver LEDs should turn off and the output change state. Allows checking proper operation.

How to adjust the timing?

Use selector 3: position a to delay the 'no object' signal, position b to delay the 'object present' signal. Duration t is adjustable. A pulse during t resets the timing.

What do the flashing red LEDs mean?

The red LEDs of the receiver flash in case of degraded reception: dirty lenses, incorrect adjustment, or partial obstruction.

How to maintain the device?

Regularly clean lenses from any dirt to ensure reliable detection.

What to do if the diagnostic output emits a 5 Hz signal?

This indicates poor object detection (e.g., dirty lenses or incorrect adjustment). Correct the problem to restore a continuous signal.

What is the supply voltage?

The device operates on direct current (DC). The exact voltage is indicated on the label, typically 10-30 V DC.

How to test proper operation after installation?

Check the LEDs: green on = power OK; red on = reception; yellow = switched output. Activate the test input if available.

Is the device repairable?

The manual does not provide for user repair. In case of malfunction, contact the manufacturer or an authorized service.

USER MANUAL OA5101 IFM

Through-beam sensor OA

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

Functions and features

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

Range: see type label.

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 receiver (OAE...) in position.

Align the transmitter (OAS) towards the receiver and tighten in the same way.

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

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

Test input of the transmitter (only for DC units)

By activating the test input (test at L-) the transmitter is deactivated. When no object is in the light beam between transmitter and receiver the LEDs indicating the reception of light must go off and the switching state of the output must change.

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 through-beam sensor.

Display by LEDs and function check output.

• Green LEDs are lit = supply voltage o.k.
• Red LEDs are lit (receiver) = light reception (no object between transmitter and receiver).
• 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.