OB5032 - Amplifier IFM - Free user manual and instructions

Product type	Fiber optic amplifier
Brand	IFM
Model	OB5032
Dimensions (L x W x H)	Approx. 30 x 80 x 60 mm (estimated)
Weight	Approx. 50 g (estimated)
Power supply	DC PNP, 18-30 V DC (estimated)
Output type	PNP, normally open
Max output current	10 mA (diagnostic output)
Compatible fiber optics	Types FE-11 and FT-11 (ifm)
Range	Depends on fiber optic used
Protection rating	IP65 (cover closed)
Operating temperature	Not specified (estimated -10 to 60 °C)
Main functions	Contactless detection, switching threshold adjustment, maximum sensitivity adjustment, lock/unlock, diagnostic output
Mounting	On DIN rail or mounting device
Electrical connection	According to diagram on back of device; disconnect power before
Maintenance and cleaning	Clean lenses if dirty; check proper operation
Safety	Disconnect before intervention; close cover for IP65
Spare parts and repairability	Compatible fiber optics; repair by manufacturer

Frequently Asked Questions - OB5032 IFM

How to mount fiber optics on the OB5032 amplifier?

Unscrew screw A, slide the fibers into the openings until you feel resistance (O-ring), then push until they stop and tighten screw A. Ensure the fibers touch the optical elements for maximum range.

What type of power supply is required for the OB5032?

The device operates on DC PNP with a typical voltage of 24 V DC (estimated range 18-30 V DC). Connect L+ and L- according to the diagram on the back of the device.

How to adjust the switching threshold for moving objects?

Pass the objects through the beam, press until the red LED flashes, then press twice more. The yellow and green LEDs flash alternately during programming. If adjustment fails, the red LED flashes.

What to do in case of a short circuit at the output?

The red LED flashes quickly and the diagnostic output switches immediately. After eliminating the fault, the output resets after about 2 seconds.

How to unlock the amplifier after a lock?

Press the pushbutton for about 10 seconds: the red LED lights briefly, then the yellow and green LEDs flash alternately. After an additional 10 seconds, the LEDs turn off and the lock is cancelled.

What is the meaning of the different LEDs?

Green LED on = device ready; yellow LED on = output switched; red LED flashing = detection error (bad adjustment, contamination); fast red+yellow flashing = short circuit; slow red+yellow flashing = internal error.

Is the OB5032 amplifier compatible with all fiber optics?

No, it is designed for ifm fiber optics type FE-11 (through-beam) and FT-11 (direct reflection). Using other fibers may reduce range.

How to adjust the maximum sensitivity?

Enter programming mode (long press until red flashing), align the cell to avoid reflections, then press the button twice (steps 2 and 3). The LEDs confirm the setting.

What to do if the red LED flashes after adjustment?

This indicates that the threshold adjustment failed (object/background signals too close). The device returns to operating mode without changing the threshold. Restart by adjusting the position or fiber type.

How to maintain the amplifier to ensure proper operation?

Clean the fiber optic lenses regularly with a soft cloth. Check that the cover is properly closed to maintain the IP65 protection rating. In case of persistent contamination, the fibers can be replaced.

USER MANUAL OB5032 IFM

Switching amplifier for fibre optics

Technical line drawing of a mechanical component with threaded end and mounting holes (no text or symbols)

Deutsch Seite

Controls and indicators 8

Mounting 9

Mount the fibre optics 9

Electrical connection 9

Setting of the switching threshold 10, 11

Setting of the maximum sensitivity 11

Locking / Unlocking 12

Operation 12

Function check output 12

Connection 19

Français

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Functions and features

The switching amplifier senses objects and materials without contact and indicates their presence by a switching signal.

• Only for the connection of the ifm fibre optics type FE-11 and FT-11.
• Sensing range depends on the fibre optic.

Controls and indicators

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red LED:

• indicates the setting mode
• lights in the uncertain reception zone (maladjustment, soiling of the lens)
• flashes quickly: output short-circuited
• flashes slowly: internal malfunction

yellow LED:

switching status, lights when the output is switched

green LED:

lights when ready for operation

push button:

starts the manual setting of the

switching threshold

locking / unlocking

Mounting

Mount the unit on a DIN rail or by means of a mounting fixture.

Mount the fibre optics:

1. Loosen the screw A, fig. 1.
2. Place the fibre optics into the sensor holes B until you feel a slight resistance (O ring), fig. 2.
3. Push the fibre optics until they come to a stop (optical elements) and hold them, fig. 3.
4. Tighten the screw A.

1 2 3

If the fibre optics are not in contact with the optical elements, the sensing range is reduced.

Electrical connection

Isolate the power, then connect the unit as specified (see the last page or the type label).

• Programming of the output function by wiring (see the last page or the type label).
• Load of the function check output (fc-output): max. 10mA.

Setting of the switching threshold (1)

• Objects move through the detection area
• Diffuse reflection fibre (FT ...) and through-beam fibre (FE ...)

The unit detects input signals of various intensity in any sequence and calculates the optimum switching threshold.

1

Allow the objects to pass trough the detection area.Press until the red LED flashes.

→

Yellow and green LEDs flash alternately (= unit is in the programming mode).

2

Press once.

Yellow and green LEDs go out for a short time, then flash again alternately.

3	Press once.			Yellow and green LEDs go out for a short time,
				then the green LED is on (= unit is in the operating mode).

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

Setting of the switching threshold (2)

• Stationary objects
• Diffuse reflection fibre (FT ...) and through-beam fibre (FE ...)

The unit detects input signals of various intensity in any sequence and calculates the optimum switching threshold.

1

Press until the red LED flashes.

Yellow and green LEDs flash alternately (= unit is in the programming mode).

2

Place the object into the detection area.*Press once.

Yellow and green LEDs go out for a short time, then flash again alternately.

3	Remove the object.*Press once.			Yellow and green LEDs go out for a short time,
				then the green LED is on (= 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 switching threshold is not possible (e.g. object signal and background signal are about the same), the red LED flashes after step 3. The unit then passes into the operating mode with the switching threshold being unchanged.

Setting of the maximum sensitivity

• Go into the programming mode (step 1).
• Align the unit so that no light is reflected.
• Press the setting button twice (see steps 2 and 3).

Locking / Unlocking

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Press for 10s.

The red LED lights for a short time, then the yellow and green LEDs flash alternately; after 10s the LEDs go out, the unit is locked.

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Press for 10s.

After 10s the LEDs go out, locking is cancelled.

Operation

Only open the cover to make adjustments. Close it after the adjustment has been made in order to maintain the protection IP65.

Check whether the unit functions properly.

LED green is lit U	Unit is ready for operation.
LED yellow is lit O	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.

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