OB5011 - Amplifier IFM - Free user manual and instructions

Product Type	Fiber optic amplifier
Brand	IFM
Model	OB5011
Use	Non-contact detection of objects and materials
Compatible fiber optic type	FE-11, FT-11-AAJ (and other ifm styles)
Power supply	10-30 V DC (estimate)
Max output current	10 mA (diagnostic output)
Pulse extension	0 or adjustable from 2 to 90 ms
LED indicators	Green (availability, reserve capacity), Red (error), Yellow (switching status)
Switching threshold adjustment	Automatic or manual
Mounting	On DIN rail or mounting device
Electrical connection	By cable (colors: BN, BU, BK, VT)
Protection rating	IP65 (cover closed)
Operating temperature	Not specified, estimate -25 to +70 °C
Dimensions	Approx. 30 x 80 x 60 mm (estimate)
Weight	Approx. 100 g (estimate)
Cleaning	Clean the fiber optics with a soft, dry cloth
Safety	Disconnect power before connection
Spare parts / reparability	Replacement fiber optics available; device not user-serviceable

Frequently Asked Questions - OB5011 IFM

How to set the switching threshold automatically?

Press the T1 button until the LED bar flashes. The yellow and green LEDs flash alternately. Pass the objects through the optical beam, then press T1 once. Repeat if necessary. The threshold is calculated automatically.

How to manually set the switching threshold for an FT fiber?

Press T1+T2 until the LED bar flashes. Place the object in the beam, measure the signal, remove the object, then adjust the threshold with the '+' or '-' buttons until it is halfway between the object and background signal. Confirm by pressing T1+T2.

How to manually set the switching threshold for an FE fiber?

Press T1+T2 until the LED bar flashes. Use the '-' button to set the threshold to the lowest. Place the object in the beam, then press '+' until the sensor switches (yellow LED changes state). Confirm by pressing T1+T2.

How to set the pulse extension?

Press T2 until the LED bar flashes. Use the '+' or '-' buttons to adjust the delay (each press = ~1 ms, hold to accelerate). Wait about 10 seconds to confirm. The green LED then lights up.

What does a red LED mean?

The red LED indicates a detection error: poor threshold setting or dirty fiber optics. Check the fiber condition and adjust the setting.

What to do if the LED bar flashes rapidly?

Rapid flashing indicates a short circuit on the output. Check the wiring and eliminate the short circuit. The diagnostic output deactivates about 4 seconds after the fault clears.

How to mount the fiber optics?

Unscrew screw A, slide the fibers into the openings until slight resistance (O-ring), then push to the stop (optical elements). Tighten screw A. Poor contact reduces the range.

How to electrically connect the device?

Disconnect power. Connect according to the diagram: BN = brown (supply), BU = blue (ground), BK = black (output), VT = violet (diagnostic output). Observe max load of 10 mA for the diagnostic output.

What to do if the automatic adjustment fails?

If the LED bar flashes after step 3 of automatic adjustment, it means the object and background signals are too close. The sensor returns to operating mode without changing the threshold. Try manual adjustment or adjust the fiber position.

How to clean the amplifier?

Clean the ends of the fiber optics regularly with a soft, dry cloth. Close the cover after adjustment to ensure IP65 protection. Do not use aggressive chemicals.

USER MANUAL OB5011 IFM

Intended use E1 Controls and indicators E1 Mounting	E2
Mount the fibre optics E2 Electrical connection E2
Automatic setting of the switching threshold (1) E3 Automatic setting of the switching threshold (2) E4
Manual setting of the switching threshold (1) E5 Manual setting of the switching threshold (2) E6
Adjust of the pulse stretching E7
Operation	E7

Français

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.
• Pulse stretching 0 or adjustable between 2 and 90ms.

(Each input pulse is stretched to the set value).

Controls and indicators

green LEDs:

• in operating mode: excess gain in %
• in programming mode: strength of input signal red LED:

lights in the uncertain reception zone (maladjustment, soiling of the lens)

T2: starts the setting of the pulse stretching

yellow LED:

switching status, lights when the output is switched

green LED:

lights when ready for operation

T1: starts the automatic setting of the switching threshold

T1 + T2: starts the manual setting of the switching threshold

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.

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).

• Core colours (for sensors with cable connection): BN = brown, BU = blue, BK = black, VT = violet.
• Programming of the output function by wiring (see the last page on the type label).
• Load of the function check output (fc-output): max. 10mA.

Automatic 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 row of LEDs 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 row of LEDs flashes after step 3. The unit then passes into the operating mode with the switching threshold being unchanged.

Automatic 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 row of LEDs 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).
			out on 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 row of LEDs flashes after step 3. The unit then passes into the operating mode with the switching threshold being unchanged.

Manual setting of the switching threshold (1)

• Stationary objects / Diffuse reflection fibre (FT ...)

1	Press until the row of LEDs flashes.	Green LED flashes, yellow LED indicates the switching status (= unit is in the programming mode).
2	Place the object into the detection area.	% 400 200 150 100 50 Object signal is measured and indicated (= row of dimly lit LEDs) brightly flashing LED = current switching threshold.
3	Remove the object.	% 400 200 150 100 50 Background signal is measured and indicated (= row of dimly lit LEDs).
4	Press the "+" or "-" button until the switching threshold is in the middle between the background signal and the object signal; (here: reducing the switching threshold).	% 400 200 150 100 50 ms 90 70 50 30 10
5	Press until the row of LEDs flashes.	Green LED lights (= unit is in the operating mode).

Manual setting of the switching threshold (2)

• Stationary objects / through-beam fibre (FE ...)

1

Press until the row of LEDs flashes.

→

Green LED flashes, yellow LED indicates the switching status (= unit is in the programming mode).

2

Press the “-” button until the row of LEDs indicates the lowest switching threshold.

Press the “-” button until the row of LEDs indicates the lowest switching threshold.

Press the “-” button until the row of LEDs indicates the lowest switching threshold.

3

Place the object into the detection area. Press the "+" button until the unit switches (yellow LED lights or goes out).

% ms 400 50 90 70 50 30 10 out on or out on

4

Press until the row of LEDs flashes.

→

Green LED lights (= unit is in the operating mode).

Adjust of the pulse stretching

1	Press until the row of LEDs flashes.	Yellow and green LEDs flash alternately (= unit is in the programming mode).
2	Press the "+" or "-" button to set the desired delay time (here: increasing delay time). 1 x = about 1ms; hold the button pressed for fast setting.	0 2 - 10 11 - 20 21 - 30 31 - 40 41 - 50 51 - 60 61 - 70 71 - 80 81 - 90 time (ms) lit LEDs
3	Wait for approx. 10s.	Green LED lights (= unit is in the operating mode).

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. Indication by LEDs and by the function check output:

• Red LED lights: wrong sensing of the object (maladjustment, soiling of the lens).
• Row of LEDs flashes quickly: output short-circuited / slowly: internal malfunction.

The function check output switches in the case of

• wrong sensing of the object (maladjustment, soiling of the lens), reset after the object has been sensed again properly;
• a short circuit of the switching output, reset about 4s after the fault has been eliminated.

PIN2 / VT = fc-output