BOL 27K-PS/NS-01
Line sensor
INSTRUCTION MANUAL
CONTROLS
OUTPUT LED
The yellow LED ON indicates that the NO output is closed.
DISPLAY (green-coloured display)
The display indicates the value of the measurement detected [operating mode function].
Please refer to the following paragraphs for the correct indications to follow during the acquisition or
setting phase.
M1, M2 LEDs
The LED couple visualises the operating mode according to the table given below:
OPERATING MODE
M1 LED
M2 LED
Object beg.
– Object end
OFF
OFF
Object centre position
OFF
ON
Width measurement
ON
OFF
Area
ON
ON
ALARM LED
The blinking of the alarm LED indicates that the received signal is insufficient for the correct sensor
functioning. In this case the “digital alarm” output is activated.
SET PUSH-BUTTON
Pressing the push-button for at least 2 seconds activates the self-setting procedure (2 thresholds =>
2 phases).
A long pressure on the button (at least 6 seconds) allows the user to access into the sensor
parameter setting menu.
Please refer to the following paragraphs for the correct indications to follow during the parameter
setting phase.
+/- PUSH-BUTTONS
Pressing the + or
– push-buttons for at least 2 seconds allows the user to access into the manual
adjustment mode of the 2 switching thresholds.
The contemporary pressure on the + and
– push-buttons (at least 2 seconds) activates the
acquisition procedure of the working area map.
The contemporary pressure on the + and
– push-buttons (at least 6 seconds) activates the setting
procedure of the reflecting tape characteristics.
Please refer to the following paragraphs for the correct indications to follow during functioning.
INSTALLATION
The sensor can be mounted by means of the three housing’s holes
using two screws (M4x35 or longer) with washers.
Various orientable fixing brackets to ease the sensor positioning
are available (please refer to the accessories listed in the
catalogue).
The operating distance is measured from the front surface of the
sensor optics.
The M12 connector can be oriented at three different positions
using the specific fastening spring and rotating the block of 180°.
DIMENSIONS
mm
OUTPUT LED
42
42
50
18x
45°
2
50
14
11
5.5
25
31.
65
16
M12
15
20
17.05
7.75
DISPLAY
M1 LED
SET PUSHBUTTON
+/- PUSHBUTTON
-
+
SET
ALARM LED
M2 LED
A 1 2
OUT
TECHNICAL DATA
Power supply:
10 … 30 Vdc limit values
Ripple:
2 Vpp max.
Consumption (output current excluded):
70 mA max.
Outputs:
1 PNP or NPN output
30 Vdc max.
(short circuit protection)
1 PNP or NPN alarm output
30 Vdc max.
(short circuit protection)
4-20mA analogue output
SYNC input:
PNP (+V)
Output current:
100 mA max.
Output saturation voltage:
2 V
Switching frequency:
> 130 Hz
Indicators:
4 digit display (GREEN), OUTPUT LED (YELLOW)
1 ALARM LED (GREEN)
2 LEDs (M1, M2) operating mode (GREEN)
Setting:
+, -, SET push-buttons
Data retention:
non volatile EEPROM memory
Operating temperature:
-
10 … 55 °C
Storage temperature:
-
20 … 70 °C
Electrical protection:
Class 2
Operating distance (typical values):
200 mm
Measurement range:
150 mm
Minimum object detectable:
0.9 mm
Resolution:
0.15 mm
Linearity:
1% max.
Emission type:
infared (875nm)
Ambient light rejection:
according to EN 60947-5-2
Vibrations
:
0.5 mm amplitude, 10 … 55 Hz frequency, for each
axis (EN60068-2-6)
Shock resistance:
11 ms (30 G) 6 shock for each axis (EN60068-2-27)
Housing material:
ABS
Lens material:
Glass window and lenses
Mechanical protection:
IP67
Connections:
8-pole M12 connector
Weight:
100 g. max.
CONNECTION
M12 CONNECTOR
*
Available only for the versions with RS485 serial interface (consult factory).
NOTE: The wire colours are referred to the cables manufactured according to the European
standard.
FUNCTIONING
The BOL 27K-PS/NS-01 sensor is a line sensor.
The typical functioning diagram is shown in the drawing given below. The object to detect is placed in
front of the sensor and the reflecting tape (inside the package) behind the sensor. The sensor
illuminated with IR lights the tape and receives the reflected light on a photodiode array. Each object
placed between the reflecting tape and the sensor is naturally detected as a dark spot on a luminous
background.
The sensor has 5 operating modes:
Object beg.
: the position of the first object edge is detected
Object end
: the position of the second object edge is detected
Object centre
: the centre of the object is measured
Width
: the distance between the first and last object edge is measured
Area
: the sum of all the object obscured zones is measured
The following diagram shows the sensor output according to the possible object position inside the
meaurement zone.
First ob. edge
Last ob. edge
Center
Width
Area
A
Beg
End
(Beg+End)/2
End-Beg
End-Beg
B
End
End
0
0
End
C
Beg
Beg
0
0
1023-Beg
D
0
0
0
0
1023
E
0
0
0
0
0
APPLICATION NOTES
The drawing shows how the same object can generate
different obscured zones if placed in different positions
inside the sensor working zone. The same happens if
the object is placed at different distances.
The “Area” operating mode is particularly sensitve to the
reflecting tape’s characteristics and for this reason the
sensor can detect the main specifications of the tape
used (please refer to “Advanced functions” paragraph”).
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