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Opto-BERO K50
Instruction manual
Operating Distances Sn
Function
Order No.
3RG7300
3RG7304
3RG7301-...00
3RG7301-...51
3RG7302
3RG730.
Supply voltage
DC 10 to 30
V
30 mA
Current consumption
40 mA
(3RG7304)
Output
NPN/PNP
100 mA
Response time
1 ms;
2 ms
(3RG7302)
Operating frequency
500 Hz
250 Hz
(3RG7302)
Protection class
IP65 ; NEMA 1, 3, 4, 12, 13
Operating temperature -15 to +55 °C
Optical alignment and sensitivity adjustment
Align the BERO using the procedure for your model. Observe the
action of the green LED stability indicator. The action of the red
LED output indicator will change according to the mode selected
(Light-On or Dark-On); for the following procedures Light On
mode is assumed.
Procedure for 3RG7301/3RG7302
1.
Turn the sensitivity trimmer to maximum sensitivity.
2.
Place the BERO within the desired operating distance. Move
the BERO to align it until the green and the red LEDs are both
ON, input signal >130%.
3.
Reduce the sensitivity by turning the trimmer counterclockwi-
se: the green LED goes OFF, the red LED is ON, the input si-
gnal is between 100% and 130%.
4.
Move the BERO until the green LED goes ON again. The red
LED is still ON. The stable functioning is obtained through a
better alignment.
5.
Repeat steps 3 and 4 until it is impossible to reach a stable
condition without increasing the sensitivity: the green LED re-
mains OFF, the red LED must still be ON
6.
The BERO is now correctly aligned. Fix the device in this
position and slightly increase the sensitivity until the green
and the red LEDs are both ON: stable functioning.
Procedure for 3RG7300/3RG7304
1.
Position the BERO with the sensitivity trimmer at minimum.
The green LED is ON, the red LED is OFF.
2.
Put the object to be detected in the sensing range.
Sn
90 cm
5 ...25 cm
3 m
4 m
5 m
3RG730.-
3RG730.-
.PH..
3WS00
AC/DC 15
AS-I
to 264 V
40 mA
30 mA
Relay
Profil S1.1
AC250V/
DC30V 3A
30 ms
-
2 Hz
-
3.
Turn the sensitivity trimmer clockwise from
MIN position until the red LED goes ON.
Object is detected. (A):
4.
Remove the object. The red LED goes
OFF. Turn the trimmer clockwise until the
red LED goes ON again. The background is
detected. B = MAX if the background is not
detected. (B):
5.
Adjust the trimmer to a medium position (C)
between A and B to get the best sensitivity.
Stability Indicator
The stability LED indicates the level of the received input signal.
The BERO must operate in a stable condition, i.e. when the green
LED is on. That means the light on the BERO receiver must be
30% lower or 30% higher than the value necessary to switch the
output (100% - output switching level). At the end of the optical
alignment and sensitivity adjustment procedure for this model, the
green LED must be ON.
CONDITIONS
(1)
stable
(1) = stable when the signal is received
(2) = stable when the signal is not received
unstable
stable (2)
Test Input (3RG7302 Emitter)
The TEST inputs (TEST+ and TEST-) inhibit emission pulses and
allow correct functioning of the thru-beam sensor to be verified. To
perform the test there must be no target between the emitter and
the receiver. The receiver output has to switch every time a voltage
of 10 to 30 Vdc is applied across the inputs TEST+ and TEST-,
respecting the polarities. In case of dirty lenses or loss of optical
alignment, the receiver will not receive the pulses and its output will
not switch during testing. The test function is used to test BERO
from remote locations and is a preliminary control of correct system
functioning without any target being present.
Alarm Output (3RG7302Receiver)
The alarm output on the receiver can be used as a signal and
warning of possible problems on BERO functioning in real time.
The alarm output is activated whenever the received signal de-
creases because of dust, dirt and/or loss of alignment problems.
The alarm output switches on when the received signal remains for
more than 3 seconds in alarm range. See drawing.
130%
ALARM OFF
100%
ALARM ON
0%
ALARM OFF
3RG730.
English
A
MIN
MAX
A
B
MIN
MAX
A
C
B
MIN
MAX
STABILITY LED
OUTPUT LED
(Green)
(Red)
ON
ON
130%
OFF
ON
output switching level
100%
OFF
OFF
70%
ON
OFF
0%
LIGHT
OUTPUT
SWITCHING
LEVEL
OFF
OFF
ON
ON
DARK
2
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