IFM OG User manual
Operating instructions
Retro-reflective sensor
OG
701300 / 03 09 / 2005
UK
UK
2
Function and features
In conjunction with a prismatic reflector or reflective tape the retro-reflective
sensor detects objects and materials without contact and indicates their presence
by a switched signal.
Range (r): see type label (value referred to prismatic reflector with Ø 80mm).
Electrical connection
Isolate power, then connect the unit. The device shall be supplied from
an isolating source and protected by an overcurrent device such that the
limited voltage circuit requirements in accordance with UL 508 are met.
Wiring:
L+
L
1
4
3
Installation and alignment
21
Setting button
LEDs yellow, green
Fix prismatic reflector / reflective tape in desired position. Align the photocell
towards the reflector; the light spot must hit the prismatic reflector.
Maximum range is only possible with precise alignment.
1:
2:
3
UK
NB: Commissioning
The retro-reflective sensor is supplied ready to operate (plug and play) set at the
max. sensing range. This is sufficient if the retro-reflective 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 LEDs flash.
Yellow and green LEDs flash alternately.
The unit is in the programming mode.
2
Set the sensitivity with object.
Press once.
The yellow and green LEDs go out for approx. 1s, then flash again alternately.
3
Set the sensitivity without object.
Press once.
The yellow and green LEDs go out for approx. 1s, then 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.
4
If the setting of the sensitivity is not possible (e.g. object signal and back-
ground signal are about the same), the unit then passes 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 LEDs flash.
Yellow and green LEDs flash alternately.
The unit is in the programming mode.
2
During the measurement (approx. 1s) allow at least two objects to move through the
sensing area of the lens.
Press once.
The yellow and green LEDs go out for approx. 1s, then flash again alternately.
3
During the measurement (approx. 1s) allow at least two objects to move through the
sensing area of the lens.
Press once.
The yellow and green LEDs go out for approx. 1s, then 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 back-
ground signal are about the same), the unit then passes into the operating
mode with the sensitivity being unchanged.
5
UK
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).
Setting the output function
You can change the output function by means of the setting button:
light-on mode (output switched, LED yellow = ON, if no object is present),
dark-on mode (output switched, LED yellow = ON, if object is present).
State when delivered: dark-on mode.
Press for 10s.
The yellow and green LEDs flash
alternately;
after 10s the LEDs go out, the output
function has been changed.
Operation
Check the safe functioning of the diffuse reflection sensor. Display by LEDs.
LED green lights Unit is ready for operation.
LED yellow lights Output is switched.
LEDs yellow flashes
2 Hz: Output short-circuited,
1 Hz: Internal malfunction,
(output is not switched).
Maintenance
Keep the lens of the sensor free from soiling. For cleaning do not use any solvents
or cleaning agents which could damage the plastic lenses.
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