EN

Operating instructions.
MESAX 70 multi-spot.
Contents
1
1.1
1.2
1.3
General information ...................................................................................................................... 3
Concerning the contents of this document ..................................................................................... 3
Intended use ................................................................................................................................... 3
Safety .............................................................................................................................................. 3
2
Commissioning ............................................................................................................................. 4
3
3.1
3.2
Connection .................................................................................................................................... 8
Connection cable ............................................................................................................................ 8
Pin assignment and connection diagram ........................................................................................ 9
4
4.1
4.2
4.3
4.4
4.5
Installation ................................................................................................................................... 10
Mounting ....................................................................................................................................... 10
Sensor reference levels ................................................................................................................ 10
Measuring field definition .............................................................................................................. 11
Mounting: ...................................................................................................................................... 13
Installation accessories................................................................................................................. 14
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
5.11
Configuration .............................................................................................................................. 15
Overview of control elements ....................................................................................................... 15
Function tree ................................................................................................................................. 18
LIVE MONITOR ............................................................................................................................ 19
MEAS TYPE ................................................................................................................................. 21
OBJECT ........................................................................................................................................ 22
PRECISION .................................................................................................................................. 22
FIELD OF VIEW ........................................................................................................................... 25
ANALOG OUT .............................................................................................................................. 27
DIGITAL OUT ................................................................................................................................ 29
SYSTEM ....................................................................................................................................... 31
SETTING ...................................................................................................................................... 33
6
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Function and definition .............................................................................................................. 34
Sensors data sheet ....................................................................................................................... 34
Functional principle ....................................................................................................................... 38
Measuring repetition time and response time............................................................................... 40
Object to be measured ................................................................................................................. 41
Interfaces and outputs .................................................................................................................. 42
Touch panel................................................................................................................................... 49
Memory ......................................................................................................................................... 49
Standard deviation ........................................................................................................................ 50
7
7.1
7.2
7.3
7.4
7.5
Safety instructions and maintenance ....................................................................................... 51
General safety instructions ........................................................................................................... 51
Part Identification .......................................................................................................................... 51
Influence of ambient light .............................................................................................................. 53
Front (optics) ................................................................................................................................. 53
Cleaning the sensors .................................................................................................................... 53
8
8.1
8.2
Error correction and tips............................................................................................................ 54
Examples of sensor setup ............................................................................................................ 54
Error correction ............................................................................................................................. 55
9
Revision history .......................................................................................................................... 56
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1
1.1
General information
Concerning the contents of this document
This manual contains information about the installation and initial setup of Baumer MESAX 70 multi-spot
sensors.
It is a supplement to the mounting instructions supplied with each sensor.
Read these operating instructions carefully and follow the safety instructions!
1.2
Intended use
The Baumer MESAX 70 multi-spot sensor measures distances to objects. It was especially developed for
easy handling, flexible use, and precise measurement.
1.3
Safety
NOTE
Provides helpful operation instructions or other general recommendations.
ATTENTION!
Indicates a possibly hazardous situation. If it is not avoided, minor or slight injuries
can occur or the device can be damaged.
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2
Commissioning
After the sensor is connected and installed, configure it via the display and perform the other applicationspecific settings/measurement type within these functions. The sensor is then ready for operation and outputs
the measuring value in mm to the screen. Optionally, the measuring field can be limited or the switching output
can be configured.
1
Connection
2
Installation
3
Application specific settings
Optional settings
Let's get started
4
1
Connection
Connect the sensor according to the connection
diagram. A shielded connection cable (8-pole M12)
must be used.
When everything is correctly connected, the sensor
starts up.
Key functions
ESC
ESC 2 sec.
UP
DOWN
SET
SET 2 sec.
= Back
= Run mode
= Up/increase value
= Down/decrease value
= OK
= Save value
LANGUAGE
English
Slide over all 4 keys:
---->
= Enables the panel if locked
<---= Jump to run mode
Setting the language
The language is selected and confirmed by pressing
SET for 2 seconds.
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Deutsch
Italiano
Français
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2
Installation
Left
Right
Reference point
DISTANCE function
Blind region
FIELD OF
VIEW
Start of
measuring range
Measuring field
width left
Measuring field
width right
End of
measuring range
The sensor is aligned at a right angle to the measurement axis. The object must be within the measuring
field, i.e. between the start of the measuring range Sdc and the end of the measuring range Sde.
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3
Application specific settings
3a
Distance
Distance measurement to an object
For a distance measurement, the required MEAS TYPE
(average value, maximum or minimum) can be selected.
The front plane of the sensor (R2) serves as reference
surface (zero).
Avg DIST1
Max DIST
Min DIST
Avg DIST
1
= Average value of all
measured points
= Distance to the furthest
measuring point
= Distance to the closest
measuring point
Max DIST
Min DIST
In the factory settings Avg DIST is predefined
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Optional settings
OBJECT
Selection of bright or dark objects to optimize the measurement results.
PRECISION
To achieve better precision and resolution, it is possible to alternate between Standard, High and Very High
by filtering the output values.
FIELD OF VIEW
The width of the measuring field can be changed with FIELD OF VIEW. Separate configuration of the single
points of the field: LIMIT LEFT, LIMIT RIGHT.
This function is required when there are objects in the measuring field that should not be detected.
ANALOG OUT
Start of measuring range Sdc and end of measuring range Sde can be changed with SCALE OUT. 0V or 4mA
then apply for the start of measuring range Sdc. 10V or 20 mA apply for the point at the end of measuring
range Sde. Voltage and current output is selected under ANALOG OUT. In addition, the output curve can be
inverted under OUTP. SLOPE.
DIGITAL OUT
The sensor is equipped with a switching output that can be configured as a threshold or as a window via the
DIGITAL OUTPUT function.
Threshold: As soon as the measuring value is greater than the entered threshold, the switching output will be
changed.
Window: As soon as the measuring value is outside the entered window, the switching output will be changed.
4
Let's get started
The sensor continuously outputs the measuring value in mm to the display and transmits it via the analog
output to the control. Alternatively, the measuring value can also be retrieved from the RS485 interface.
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3
Connection
ATTENTION!
Incorrect supply voltage will destroy the device!
ATTENTION!
Connection, installation and commissioning may only be performed by qualified
personnel.
ATTENTION!
The IP protection class is valid only if all connections are connected as
described in the technical documentation.
ATTENTION!
Laser class 1 laser beam according to EN 60825-1:2007. This product can be
operated safely without any additional safety precautions. Nevertheless direct
contact between the eye and beam should be avoided.
3.1
Connection cable
An 8-pole, shielded connection cable (connector) is required.
Baumer connection cables with the following order codes are recommended:
• 10127844
ESG 34FH0200G (length 2 m, straight plug)
• 11053961
ESW 33FH0200G (length 2 m, angled plug)
• 10129333
ESG 34FH1000G (Länge 10 m, straight plug)
• 10170054
ESW 33FH1000G (Länge 10 m, angled plug)
Other cable lengths are available.
When using the analogue output, the cable length has an influence on the signal noise. The longer the cable,
the greater the signal noise.
Analog output I_OUT
Noise: 5.92 uA (1 Sigma) (10 m cable and 680 ohm)
3:59 uA (1 sigma) (2m cable and 680 ohm)
Analog output U_OUT
Noise: 4.80 mV (1 Sigma) (10m cable and 100 kOhm)
3:03 mV (1 Sigma) (2m cable and 100 kOhm)
For high-precision applications, the use of the RS485 interface is recommended.
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3.2
Pin assignment and connection diagram
Color
Function
Description
Pin 1
WH = white
Rx/Tx-
RS 485 receive/transmit- (B)
Pin 2
BN = brown
+ Vs
Voltage supply (+15…+28 VDC)
Pin 3
GN = green
analog
Analog output (4…20 mA or 0…10V)
Pin 4
YE = yellow
out
Switching output, push-pull
Pin 5
GY = gray
alarm
Alarm output, push-pull
Pin 6
PK = pink
Rx/Tx+
RS485 receive/transmit+ (A)
Pin 7
BU = blue
0V
Ground GND
Pin 8
RD = red
sync in
Input synchronization
NOTE
It is recommended to connect unused inputs to GND (0V).
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4
Installation
ATTENTION!
Connection, installation and commissioning may only be performed by qualified
personnel. Protect optical surfaces from moisture and dirt.
4.1
Mounting
The sensor has four mounting holes for flexible alignment and mounting. The use of 2 M4x35 screws is
recommended for mounting. The tightening torque is max. 1.2 Nm.
Tightening torque
max. = 1.2 Nm
4.2
Sensor reference levels
The sensor can be aligned with the following levels:
The laser beam of the sensor runs parallel ( // ) to level R3 and is at a right angle to levels R1 and R2. Levels
R1, R2, and R3 serve as references for sensor alignment during installation. "Left" and "Right" designations
13 mm
are also important.
Left
Right
19 mm
Laser
beam
Level R3
Level R2
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4.3
Measuring field definition
The maximum measuring field and additional important measuring field definitions are described in the
following diagram. The important terms "left" and "right" are to be regarded respectively from the viewpoint of
the connector side of the sensor.
Left
Right
Z
Reference point
function DISTANCE
R2
X
Measuring
axis
Blind range
Measuring
field
Measuring
field width
left
Measuring
range
Outside measuring range
Start of measuring range Sdc
0 V / 4 mA
End of measuring range
Measuring
Sde 10 V / 20 mA
Measuring field
width
field width
right
The sensor measures distances within the measuring field.
The sensor level R2 is the reference for 0.
NOTE
For further explanations, see section "Function and definition“ -> "Interfaces and
output" -> "Interfaces and output-> "Analog signal output".
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4.3.1
Blind region
The region from sensor level R2 up to the start of measuring range Sdc is called the blind region, i.e. the
sensor cannot detect any objects there.
Objects in this area can cause incorrect measuring values.
Object
Blind region
R2
Measuring
field
Measuring
range
Start of measuring range Sdc
End of measuring range Sde
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4.4
Mounting:
The sensor is mounted at a right angle (90°) to the reference surface or the object (when there is no reference
surface). A reference level and the object must be inside the measuring field (see definition of measuring
field).
On reference level
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4.5
Installation accessories
To ensure optimal mounting, various mounting brackets are available an as accessory. These brackets fit the
mounting holes of the sensor exactly. The sensor can be shifted and adjusted inside the mounting hole.
4.5.1
Mounting kit for standard installation Order no. 11120705
With the mounting bracket for standard installation, the sensor can be mounted quickly and easily at a 90°
angle to the reference surface.
Mounting kit 11120705
Contents of this set:
- 90° mounting bracket
- Threaded plate
- 2x spherical head screw M4x35
- 1x Torx tool T20
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5
Configuration
5.1
Overview of control elements
LEDs
Graphical display
Avg DIST
112.4 mm
Touch panel: Four
touch-sensitive keys
ESC
5.1.1
UP
SET
DOWN
Display modes
112.4 mm
Run mode
The sensor is in run mode, the measuring value is
displayed in large characters.
AVG DIST
112.4 mm
Main menu
In the main menu the active mode is displayed at the top,
and the measuring value is displayed at the bottom.
MEAS TYPE
AVG DIST
Scroll bar
The square on the right side indicates the position within
the current menu. The next menu item can be accessed
using the arrow keys.
Change value
If the function/mode at the top is displayed on a black
background, the value of the bottom line can be adjusted
using the UP/DOWN keys and saved with SET.
Process successful
The display background lights up green: Value
successfully saved
MEAS TYPE
AVG DIST
Error
The display background lights up red: Error during the
save process or wrong value entered.
Setting mode
When the sensor is in setting mode the display
background lights up blue.
112.4 mm
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Keys locked
If this symbol is on the left side of the screen, the touch
panel is locked for operation.
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5.1.2
Functions of the individual keys
Key
Pressed briefly
Pressed >2 s.
ESC
Back
Jump to Run mode
UP
Up/increase value
DOWN
Down/decrease value
SET
OK
Save new value*
*Only in the setting menu when the top line is displayed on a black background (change value)
5.1.3
Locking the touch panel
The keys on the control panel are locked when they are not pressed for 5 minutes. A key symbol appears, and
the measuring value is displayed in large lettering.
When it is pressed, the following text appears:
To re-enable the touch panel, it is required to quickly slide a finger over all four keys from left to right (slide
over ESC, UP, DOWN, and SET).
When controlled via RS-485:
When the sensor is controlled via RS-485, it cannot be operated via the display at the same time; the keys are
deactivated. When the keys are pressed, the following text appears on the display:
RS-485 controls
the sensor
Locking via RS-485 command:
The sensor keys can be permanently locked with a RS-485 command. This locking remains activated even if
the senor is no longer controlled via RS-485. The keys must be unlocked with a RS-485 command. When the
locked keys are touched, the following text appears on the display:
Touch keys locked
by RS-485
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5.1.4 Further key functions
Action
Slide over all keys from left to right
Reaction
Unlock locked touch panel
Only if touch panel is locked
Jump directly to run mode
Can be used from any menu
Slide over all keys from right to left
5.1.5
LED
Yellow
Red
Green
LEDs on the sensor
Lights up
Out1 activated
Switching output1 active
Out2 activated
No measuring object inside the measuring
field. Alarm output active.
Supply voltage
Sensor ready for operation.
Flashes
Insufficient excess gain
Object close to signal gain (Not enough light).
Performing setting OBJECT (Bright or Dark).
Short circuit
Check connection on digital output 1 or 2.
Avg DIST
112.4 mm
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5.2
Function tree
The menu that can be accessed via the touch panel is shown below.
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5.3
LIVE MONITOR
The installation conditions can be checked using LIVE MONITOR. The sensor outputs the angle and edge
position to the object with the smallest distance to the sensor.
LIVE MONITOR
15,7° 13mm
Angle in °
(To object or
reference surface)
Position of object
LEFT EDGE RISING
LIVE MONITOR to reference surface
Left
LIVE MONITOR to object
Right
Left
Right
LEFT EDGE RISING
(in mm)
Angle
measuring
value
(in °)
Object with shortest
distance from “Start of
measuring range”
Angle
measuring
value
(in °)
L
K
Reference surface
Reference axis
Measuring value
position in mm
End of measuring
range
Display example:
LIVE MONITOR
30°
---- mm
Reference surface
Reference Point
Display example:
LIVE MONITOR
15°
21.5mm
NOTE
To avoid measurement errors, the angle should be 0°
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•
•
•
1
“End of measuring range” of the sensor represents the standard reference for angle measurement.
Displayed for the edge position are always the values for the object or the reference surface with the
1
smallest distance to “Start of measuring range” .
The requirements for the object with respect to the minimum width1 and height1 must be met.
NOTE
When several objects are in the measuring range, the object with the shortest
distance from the start of measuring range is the reference object.
Displaying the tilt angle
For displaying the tilt angle of the sensor to the reference surface, in the measuring field must not be an
object. The output will be ---- for EDGE LEFT RISING of the object.
Finding the reference point without a teached reference surface
Once an object is within the measuring range, the position of LEFT EDGE RISING and the angle of the
surface of the object relative to the axis "End of measuring range"1 are displayed.
When moving the object into the direction of the assumed reference point until LEFT EDGE RISING displays
0mm, the reference point is found.
1
According to data sheet chapter 6.1
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5.4
MEAS TYPE
The MESAX 70 multi-spot can output measured distances in various ways. The measuring value is calculated
in mm with analog or RS485 output.
NOTE
If the MEAS TYPE is changed, SCALE OUT, DIGITAL OUT and FIELD OF
VIEW are reset to the default setting.
Distance
5.4.1 Avg DIST
Average distance to all measuring points.
5.4.2 Max DIST
Distance to the furthest measuring point.
5.4.3 Min DIST
Distance to the nearest measuring point.
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5.5
OBJECT
To improve sensitivity to dark objects, the exposure time can be increased. This also changes the measuring
repetition time.
5.5.1
Object: Bright (Reflectivity > 18%, white-grey)
Exposure time
5.5.2
Object: Dark (Reflectivity 6…18%, dark grey-black)
Exposure time
5.6
Short (1 ms)
Long (3 ms)
PRECISION
By enabling filtering, the noise can be reduced and thereby the resolution can be increased.
Standard
High
Very high
12
= normal resolution
= approx. twice the normal resolution12
= approx. four times the normal resolution12
5.6.1 Influences of the filter PRECISION
The higher precision is set, the more measuring speed is reduced (response and the release time are
increased). The measuring frequency is not affected by using this filter.
PRECISION utilizes a moving median and a moving average filter.
Moving Median
The median of a finite list of numbers can be found by arranging all the observations from lowest value to
highest value and picking the middle one (e.g., the median of {3, 3, 5, 9, 11} is 5). The number of samples
stored in the array is called “Sample size” (e.g. {3, 3, 5, 9, 11} = 5 values). When a new sample is added the
oldest sample is removed (Moving filter). A sudden change of the measured values will only effect the output
after more than half of the samples stored resemble the new value (e.g. sample size=5 -> 3 samples until
output is effected).
1
2
According to data sheet chapter 6.1
Dependent upon object to be measured
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The diagram shows the effects of the median (sample size 5). The filter is used to suppress errors. The output
changes after a defined number of samples (sample size/2). The measurement frequency is not affected by
this filter, but rather the response time.
Moving average
The output of the moving average filter is the average of all values found in the array with the defined sample
size. When a new sample is added, the oldest sample is removed (Moving filter).
As visible in the diagram, the moving average softens the output. In contrast to the median filter, values at the
output can be values that have never been measured. The measurement frequency is not affected by this
filter, but rather the response time.
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Number of samples until the correct value will be output:
- In PRECISION mode HIGH, the distance has to be stable for 4 + 16 samples for the output to show
the current value.
- In precision mode very high, the distance has to be stable for 8 + 128 samples for the output to show
the current value.
Example
Calculation of the response time with measuring frequency 500 Hz, PRECISION = High
1 / 500 Hz = 0.002 ms
Median = 7 / 2 (Formula: Samples / 2) = 4
Average = 16
Response time = 0.002 * (4 + 16) = 0.04 s = 40 ms
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FIELD OF VIEW
5.7
The width of the measuring field can be limited with the FIELD OF VIEW function. All measuring values
outside the set measuring field are ignored. This is particularly useful if, for example, the measuring field
contains an unwanted object that should not be detected.
The measuring field is adapted by software so the width of the visible laser beam does not change.
Manual limitation of the measuring field
5.7.1
For full flexibility, every value in the measuring field can be individually adjusted. The modified measuring field
need not be symmetrical. Even a single limit, e.g. LIMIT LEFT, can be restricted.
• LIMIT LEFT
• LIMIT RIGHT
Left
Right
0 mm
Reference line
(Middle of
measuring field)
Measuring field
limited
LIMIT LEFT
(
mm)
Reference
point
LIMIT RIGHT
(
mm)
NOTE
The LIVE MONITOR mode can be used to find the reference point. This function displays the
LEFT EDGE RISING of objects. Now an object is slowly pushed toward the presumed zero
point. The zero point is reached when the value 0 mm is shown on the sensor display.
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5.7.2
LIMIT LEFT
Limitation of the left side of the measuring field in mm, measured from the reference point.
5.7.3
LIMIT RIGHT
Limitation of the right side of the measuring field in mm, measured from the reference point.
NOTE
The measuring field width (Distance LIMIT LEFT to LIMIT RIGHT) must be
at least 2 mm.
5.7.4
FIELD OF VIEW
"Set maximum values" resets all adjustments of the measuring field to the standard settings (maximum
measuring field).
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5.8
5.8.1
ANALOG OUT
SCALE OUT
In the factory setting, the analog output runs across the entire measuring range (start of measuring range Sdc
- end of measuring range Sde) from 0...10V (voltage mode) or from 4...20mA (current mode).
The start and end of the measuring range can be reset with SCALE OUT, reducing the measuring field and
changing the calibration curve.
The smaller measuring field improves the measurement repetition time, ie, the measuring frequency is
increased.
*The minimum window size (distance from end of the measuring range Sde - start of measuring range Sdc)
must be greater than 5% of the "end of measuring range" value.
Sensor level R2 =
reference
DIST.
NEAR
Start of measuring
range
DIST.
FAR
0V
4 mA
10 V
20 mA
Scaled measuring
range
*Minimum
window size
*
Current Start of
measuring range Sdc
Current End of
measuring range Sde
End of measuring
range
5.8.1.1 DIST NEAR
The value in mm at which the sensor should have the
minimum analog output value of 0V or 4 mA is
specified here.
DIST NEAR >= Start of measuring range
DIST NEAR <= End of measuring range – minimum
window size*
5.8.1.2 DIST FAR
The value in mm at which the sensor should have the
maximum analog output value of 10V or 20 mA is
specified here.
DIST FAR <= End of measuring range
DIST FAR >= Start of measuring range + minimum
window size*
NOTE
The measuring cycles can be shortened by reduction of the window size, i.e. this
increases the measuring frequency, according to data sheet chapter 6.1.
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Example: SCALE OUT with DISTANCE function
The sensor should display 4 mA at a distance of 110
mm and 20 mA at a distance of 140 mm.
110 mm
Set Dist NEAR to 110 mm
Set Dist FAR to 140 mm
140 mm
•
•
0 V / 4 mA
10 V / 20 mA
5.8.1.3 SET MAX VALUES
SCALE OUT is reset to the standard setting (maximum measuring field) with the "set max values" command.
5.8.2
ANALOG OUT
The analog output can be set from current to voltage.
5.8.3
CHARACTERISTIC
Output signal V/mA
The analog characteristic curve can be inverted. With a positive output slope, the signal increases with an
increasing measuring value. For the negative slope the output signal decreases with an increasing measuring
value.
Pos. slope
Neg. slope
Measuring value in mm
Start of measuring
range Sdc
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5.9
DIGITAL OUT
With Pin 4 (out), the user has a configurable switching output.
It can be defined as a single switching point (threshold) or a window. Pin 4 is activated when the value (point
or window) is exceeded or not reached (active high or active low depending on the setting).
The switching points can only be placed inside the active, preset measuring field (note SCALE OUT). There is
1
a hysteresis for a reliable switching signal.
The window must be larger than 5% of the "end of current measuring range".
Output level: Aktiv Low
0 mm
Output level: Aktiv High
Sensor R2
level
0 mm
Output level: Aktiv High
Sensor R2
level
Output level: Aktiv Low
Function Distance: Window
Function Distance: Point
Hysteresis
WINDOW P1
SWITCH POINT
Hysteresis
WINDOW
Signal high
Hysteresis
Signal low
Signal high
5.9.1
Signal low
WINDOW P2
DIGITAL OUT
Whether Pin 4 is to be operated as a threshold (with a switch point) or as a window (window function) is
defined here.
5.9.2
SWITCH POINT
The switch point is selected in mm using the arrow keys. The point must lie within the measuring range
(between start of measuring range Sdc1 and end of measuring range Sde1 -2x hysteresis1).
1
According to data sheet chapter 6.1
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5.9.3
WINDOW P1
Window point 1 (for the WINDOW mode) is selected in mm using the arrow keys. The point must lie within the
measuring range (greater than start of measuring range Sdc1 +2x hysteresis1).
5.9.4
WINDOW P2
Window point 2 (for the WINDOW mode) is selected in mm using the arrow keys. The point must lie within the
measuring range (less than end of measuring range Sde1 -2x hysteresis1).
5.9.5
LEVEL
The output level can be inverted with active high or active low here.
NOTE
If MEAS TYPE is changed, the switching output settings are discarded. The
1
factory settings are restored for DIGITAL OUT = End of measuring range Sde .
1
According to data sheet chapter 6.1
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5.10 SYSTEM
5.10.1 RS485 BAUD
The sensor can be operated with three different baud rates:
• 38400
• 57600
• 115200
5.10.2 RS485 ADDR
Every sensor has its own RS485 address, allowing the selected sensor to be addressed directly. This address
is preset to 001 in every sensor and the 3 digits can be changed here. Two sensors in the same network must
not have the same number, to prevent the occurrence of bus conflicts. No more than 32 sensors may be
connected to one bus.
5.10.3 ANALOG OUT
The analog output can be reset to voltage or current, depending on purpose.
See the Section "Interfaces and output --> Analog signal output".
• Current
• Voltage
5.10.4 DISPLAY LIGHT
The display background illumination automatically switches off after the set time or remains switched on. The
countdown begins as soon as the keys for an operation are locked (key symbol).
•
•
•
•
OFF 5 min.
OFF 10min.
OFF 20min.
Always ON
5.10.5 SENSOR INFO
The sensor type and serial number are displayed here to enable clear identification of the sensor.
•
•
SENSOR TYPE
SERIAL NUMBER
5.10.6 Language
Language selection:
•
•
•
•
English
Deutsch
Italiano
Français
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5.10.7 RESET
This resets all settings in sensor parameters to the factory settings.
MEAS TYPE
OBJECT
PRECISION
SCALE OUT
FIELD OF VIEW
DIGITAL OUT
= Avg DIST
= Bright
= Standard
= Max. values
= Max. values
= Threshold (end of measuring range Sde, active high)
RS485 lock
RS485 BAUD RATE
RS485 BAUD ADR
ANALOG OUT
DISPLAY LIGHT
LANGUAGE
= 1 (activated)
= 57600
= 001
= Current
= OFF after 5min.
= English
NOTE
With "Reset", the current configuration in the sensor is overwritten. However, all
stored settings are deleted from the sensor memory. The factory settings will be
restored.
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5.11 SETTING
The settings entered in the sensor can be applied, stored or displayed here.
5.11.1 APPLY
The settings saved under SAVE can be activated here.
• Setting 1
• Setting 2
• Setting 3
5.11.2 STORE
The settings entered in the sensor can be stored here.
Three storage spaces are available.
• Setting 1
• Setting 2
• Setting 3
5.11.3 SHOW
SHOW displays the setting values.
SHOW ACTIVE
Displays the active settings.
SHOW SETTING 1-3
Displays the settings stored in storage spaces 1-3
The values are displayed successively; it is possible to jump to the next value using DOWN.
MEAS TYPE
OBJECT
PRECISION
SCALE OUT- Dist NEAR
SCALE OUT- Dist FAR
LIMIT LEFT
LIMIT RIGHT
SWITCH POINT
WINDOW P1
(WINDOW P2)
OUTPUT LEVEL
ANALOG OUT
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6
6.1
Function and definition
Sensors data sheet
General data
MESAX 70 multi-spot
11155463
OM70-11155463
MESAX 70 multi-spot
11112069
OM70-11112069
Function
Function: FIELD OF VIEW
Measuring range (distance)
Start of measuring range Sdc
End of measuring range Sde
Measuring range (width)
Measuring field width right @ Sde
Measuring field width left @ Sde
Blind region
Measuring frequency
- OBJECT bright (approx. 90% Refl.)
- OBJECT dark (approx. 6% Refl.)
Distance
Yes
100…150 mm
100
150
48…72 mm
+36 mm
-36 mm
0…100 mm
Distance
Yes
100…500 mm
100
500
13 …66 mm
+33 mm
-33 mm
0…100 mm
Response time
- OBJECT bright (approx. 90% Refl.)
- OBJECT dark (approx. 6% Refl.)
14
142
244…570 Hz
14
192…342 Hz
440…1540 Hz
142
340…770 Hz
14
142
3.5…8.2 ms
14
5.8…10.4 ms
1.3…4.5 ms
142
2.6…5.8 ms
345
Resolution AVG DIST
(max. measuring field width)
8…16 µm
(Without filter)
3456
4…8 µm
(With filter Precision high)
3456
2…4 µm
(With filter Precision very high)
Resolution MIN / MAX DIST
23…48 µm
34
(Without filter)
345
15…55 µm
(Without filter)
3456
8…28 µm
(With filter Precision high)
3456
4…25 µm
(With filter Precision very high)
34
70…150 µm (Without filter)
346
45…75 µm
(With filter Precision high)
346
25…45 µm
(With filter Precision very high)
345
Repeatability AVG DIST
(max. measuring field width)
10…40 µm
(Without filter)
3456
5…25 µm
(With filter Precision high)
3456
4…20 µm
(With filter Precision very high)
Repeatability MIN / MAX DIST
30…90 µm (Without filter)
346
20…70 µm
(With filter Precision high)
346
15…60 µm
(With filter Precision very high)
Linearity error
Temperature drift
PRECISION filter values:
Standard
High
Very High
Smallest detectable object
Laser class
Max. reference surface unevenness (rms)
Min. reference surface length
LIVE MONITOR:
Minimum object height
Minimum object width
Digital output hysteresis
34
3457
± 30 ... ± 90 µm
345
± 100 µm
3458
345
± 0.04% Sde/K
Median
Average
Off
Off
Off
3
16
3
0.7…1.1 mm
± 0.04% Sde/K
Median
Average
Off
Off
Off
3
16
3
1…5 mm
1
0.25 mm
24 mm
2
0.25 mm
24 mm
4 mm
4 mm
0.5% of Sd (switch point)
4 mm
4 mm
0.5% of Sd (switch point)
1
Measuring rate depends on the measuring field (distance). Min value: Maximum measuring field; Max. Value: 20% of the measurement
field
Measuring rate depends on the measuring field (width)
3
Measurement with Baumer standardized measuring equipment and targets depending on measuring range (distance)
4
Measurement on 90% remission (white)
5
Measurement with measuring type average
6
With active filtering
7
Measuring range (distance) 100…150 mm
8
Measuring range (distance) 100…200 mm
2
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Power on indication
Output indicator
Light source
Setting
Green LED
Yellow LED / red LED
Red laser diode, pulsed
Touch display, RS485
Green LED
Yellow LED / red LED
Red laser diode, pulsed
Touch display, RS485
Electrical data
MESAX 70 multi-spot
11155463
OM70-11155463
MESAX 70 multi-spot
11112069
OM70-11112069
Voltage supply range +Vs
15 ... 28 VDC
120 mA
Analog and RS485
4 ... 20 mA / 0 ... 10 VDC (adjustable)
Push-pull
Out 1 / alarm
< 100 mA
38400 / 57600 / 115200
Yes, Vs to GND
Yes
15 ... 28 VDC
120 mA
Analog and RS485
4 ... 20 mA / 0 ... 10 VDC (adjustable)
Push-pull
Out 1 / alarm
< 100 mA
38400 / 57600 / 115200
Yes, Vs to GND
Yes
Mechanical data
MESAX 70 multi-spot
11155463
OM70-11155463
MESAX 70 multi-spot
11112069
OM70-11112069
Width / Height / Length
26 / 74 / 55 mm
Rectangular, front view
Aluminum
Glass
Plug M12 8-pole
130 g
26 / 74 / 55 mm
Rectangular, front view
Aluminum
Glass
Plug M12 8-pole
130 g
Ambient conditions
MESAX 70 multi-spot
11155463
OM70-11155463
MESAX 70 multi-spot
11112069
OM70-11112069
Ambient light immunity
< 35 kLux
-10 ... +50 °C
-25…+75 °C
IP 67
IEC 60068-2-6:2008
7.5mm p-p for f = 2 - 8Hz
2g for f = 8 – 200Hz, or 4g for 200 – 500Hz
IEC 60068-2-6:2008
1.5mm p-p for f = 10 - 57Hz , 10 cycles for
each axis 10g for f = 58 -2,000Hz, 10 cycles
for each axis
IEC 60068-2-64:2008
Spectrum: 0.1 g2/Hz for 20 – 1,000Hz, 30
minutes / axis (>10g RMS)
IEC 60068-2-27:2009
50g / 11ms or 100g / 6ms, 10 shocks in each
axis and each direction
50g / 11ms or 100g / 6ms, 5,000 shocks in
each axis and each direction
IEC 60068-2-27
50g / 11ms or 100g / 6ms, 4,000 shocks in
each axis and each direction
< 35 kLux
-10 ... +50 °C
-25…+75 °C
IP 67
IEC 60068-2-6:2008
7.5mm p-p for f = 2 - 8Hz
2g for f = 8 – 200Hz, or 4g for 200 – 500Hz
IEC 60068-2-6:2008
1.5mm p-p for f = 10 - 57Hz , 10 cycles for
each axis 10g for f = 58 -2,000Hz, 10 cycles
for each axis
IEC 60068-2-64:2008
Spectrum: 0.1 g2/Hz for 20 – 1,000Hz, 30
minutes / axis (>10g RMS)
IEC 60068-2-27:2009
50g / 11ms or 100g / 6ms, 10 shocks in each
axis and each direction
50g / 11ms or 100g / 6ms, 5,000 shocks in
each axis and each direction
IEC 60068-2-27
50g / 11ms or 100g / 6ms, 4,000 shocks in
each axis and each direction
MESAX 70 multi-spot
11155463
MESAX 70 multi-spot
11112069
Max. supply current (without load)
Output circuit
Output signal
Switching output
Output function
Output current
Baud rate
Reverse polarity protection
Short circuit protection
Design
Housing material
Front (optics)
Connection method
Weight
Operating temperature
Storage temperature
Protection class
Vibration resistance (sinusoidal)
Resonance test
Vibration resistance (random)
Shock resistance
Impact resistance
Optical Properties
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Light source
Wavelength
Operational mode
Pulse duration
dark mode
bright mode
Pulse period
dark mode
bright mode
Total emitted pulse power
Beam shape
Focus distance df
Beam size @ exit window
perpendicular δ⊥
parallel δ∥
Beam size @ focus
perpendicular δ⊥
parallel δ∥
Beam divergence
perpendicular δ⊥
parallel δ∥
Laser classification (per IEC 608251/2014)
6.1.1
OM70-11155463
OM70-11112069
AlGaInP-Laser Diode
656 nm
pulsed
InGaAlP-Laser Diode
3 ms
1 ms
0.8 ms
0.2 ms
>4 ms
>1.9 ms
3 mW
elliptical (focused to laser line)
200 mm
>0.65 ms
>1.3 ms
10 mW
elliptical (focused to laser line)
300 mm
3 mm
8 mm
3 mm
8 mm
< 0.5 mm
L = 120 mm
< 0.5 mm
L = 120 mm
15 mrad
32°
15 mrad
32°
Laser Class 1
Laser Class 2
660 nm
pulsed
Beam divergence
Perpendicular plane:
δ⊥
Parallel plane:
δ∥
L
df
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6.1.2
Dimensions
*Optical axis
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6.2
Functional principle
The sensor works on the laser triangulation
principle. By means of special optics, a laser
beam is enlarged into a line and projected to the
surface of the object to be measured. Using the
multi-lens system, the reflected light from this
laser line is projected onto a matrix. From this
matrix image, a controller calculates the distance
to every individual measuring point.
The measuring value is calculated in accordance
with the selected modus. Thanks to the factory
calibration of the sensors, the output of the
distance to the object is always in mm.
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6.2.1 qTarget
The measuring field is aligned with the housing reference surfaces at the factory. The beam position in every
sensor is in exactly the same spot, which makes planning and sensor replacement very easy.
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Measuring repetition time and response time
Object
change
6.3
Response time fast
2x measuring repetition time
Measuring
repetition time
Object
change
Laserexposure
6.3.1
Response time worst case
3x measuring repetition time
Measuring repetition time
The measuring repetition time (specified in milliseconds) is the time between two exposure times.
Measuring repetition time = 1/‘Measuring frequency in Hz‘
Example:
Measuring frequency = 100 Hz
1/100 Hz = 0.01 ms
Measuring repetition time = 0.01 ms
6.3.2
Response time
Response time is called the time in which the sensor has output the new measured value after an object
changed his position.
Typically it is about 2-3x measuring repetition time.
When the position of the object has changed during the exposure time, the response time is the fastest, ie
about the 2x measuring repetition time.
At the worst case, if the object position has changed shortly after an exposure time, the response time is 3x
measuring repetition time.
6.3.3 Response time when using Sync-In
If the Sync-In input is High, and then to start a measurement, is set to Low, the sensor starts with the
exposure process.
This means that if the Sync-In is in use, the response time always is 2x the measuring repetition time.
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6.4
Object to be measured
Smallest
detectable
object
6.4.2
Distance to the sensor
6.4.1 Smallest detectable object
For an object to be reliably detected, it must conform to the minimum object width1. This minimum object width
varies with the distance from the sensor.
Smallest detectable object close
Smallest detectable object far
Reflectivity
Bright objects are generally easier to detect than dark objects, since they are more reflective. Reflectivity is
the percentage relationship between incident and reflected light.
Definition of objects:
White object
Approx. 90% reflectivity
Black object
Approx. 6% reflectivity
Bright object
> 18% reflectivity
Dark object
6…18% reflectivity
6.4.3
Standard object
The technical data for sensors in the data sheet refers to measurements with a Baumer standard object. This
standard object is precisely defined in size, shape and color, making multiple measurements comparable.
Standard object definition:
• White ceramic (reflectivity approx. 90%)
• Smooth, flat surface
• Covers entire sensor measuring range
1
According to data sheet chapter 6.1
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6.5
Interfaces and outputs
All sensor inputs and outputs that transmit measuring data are referred to as interfaces.
-
Analog current output
Synchronization
Switching output
Alarm output
RS-485
NOTE
When an object moves laterally out of the measuring field, the last valid output value is
retained until an object is again present in the measuring range.
6.5.1 Analog signal output
Current or voltage output
The sensor has an analog output that can send a current or voltage signal through the same pin.
The desired CURRENT or VOLTAGE output function can be activated in the SYSTEM --> ANALOG sensor
settings or with an RS485 command.
Analog output with DISTANCE function
NOTE
If the object leaves the measuring range, the analog output will hold the last valid condition.
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6.5.1.1 Formulas for analog signal conversion
The measuring values can be converted from mm into the analog output signal and vice versa with the
following formulas.
If the measuring range has been limited with SCALE OUT, the new settings for Current Start of measuring
range Sdc and Current End of measuring range Sde must be used.
Start of measuring
range Sdc
End of measuring range
Sde
DISTANCE function definitions
0 V / 4 mA
10 V / 20 mA
−
=
∗ 10
−
=
16
∗(
=
=
−
−
∗(
∗(
10
−
16
−
)
+4
) + (20
) + (10
∗
∗
) − (4
∗
)
)
HINWEIS
Sdc and Sde are always in mm.
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6.5.2 Sync-In / Trigger
The measurement and signal output can be interrupted with the Sync-In input by connecting with high. As long
as Sync-In stands at high, the sensor delays the next measurement (Hold) and reduces the power of the laser
beam.
•
•
•
•
•
•
The sensor checks the Sync-in before each measurement
The previous measurement cycle will be always completed, even if the sync-in is High
The sensor reduces the power of the laser beam during the waiting period (Hold)
The outputs are held in the last valid state during Hold
To come back to measuring mode, the Sync-In has to be set from High to Low
The Sync-in must be at least 5µs at Low to come back to the measuring mode
Sync-In
Sync-In low
Sync-In high
Level
0...2.5 V
8 V…UB (operating voltage)
Measurement
Run
Hold
Example: Mutual interference
Only the laser beam of Sensor1 may be in the measuring field of Sensor1. The laser beam of Sensor2 must
be outside the measuring field from Sensor1.
If it is not possible to prevent several sensors from affecting each other through appropriate installation, the
sensors affecting each other can be operated asynchronously by the Sync-In cable. The superordinate control
generates the signals for this.
HINT
Once the Sync-In is set to High (Hold), all output functions are frozen in their last state until
the next measurement.
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Measuring if Synch-In low
The sensor checks the level of the Sync-In each time before it sends out the laser pulse. If it is low, the sensor
will immediately begin the next measurement.
High
Start measuring cycle
Sync-In
Low
t
High
Laser
1ms or 3ms
(Object white/black)
t
Low
Reading camera High
Calculations
Set outputs
t
Low
Analog
Output
High
t
Low
1 measuring cycle
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Sync-In Low to High:
If the Synch-In level is High, the sensor completes the actual measurement, but do not start the next
measurement. All outputs are held (Hold function).
High
Sync-In
Low
t
High
Laser
1ms or 3ms
(Object white/black)
t
Low
Reading camera
Calculations
Set outputs
High
t
Low
High
Analog
Output
Hold function
t
Low
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Sync-In High to Low:
Sync-In has to set from High to Low to bring the sensor back into the measuring mode. The Sync-In must be
at least 5µs set to low level, so that the sensor starts to measure. For this first measuring cycle, the response
time will be 5µs longer.
High
Sync-In
5µs
Low
t
High
Laser
1ms or 3ms
Low
Reading camera
Calculations
Set outputs
(Object white/black)
t
High
t
Low
High
Analog
Output
t
Low
Measuring cycle 1
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6.5.3
Switching output
The switching output can be set as a point or a window, see Section DIGITAL OUT.
The output is transmitted as a push-pool signal with active high or active low (inverted), depending on the
setting.
6.5.4
Alarm output
The sensor evaluates the signal level (amount of reflected light) during every measurement cycle. If this level
falls below a defined value (signal gain), the alarm output and red LED on the sensor are activated.
Reasons for a low signal level:
• Signal gain too small
• Incorrect mounting angle
• Insufficient light reflected from the object
• Object outside the measuring field
Signal level
Signal gain reached
Signal gain not reached
No object inside the measuring range
Red LED
Off
Blinks (8 Hz)
On
Alarm output out2
Low
Low
High
RS485 quality bit
Valid
Low signal
No signal
The alarm output cannot be adjusted and is triggered by the following situations:
• No object in the measuring field
• Insufficient signal gain (e.g. with soiling) or or incorrect OBJECT setting.
The alarm signal is output as a push-pull signal (active high).
NOTE
There is no excess gain hysteresis, which is why rapid switching between alarms can occur.
6.5.5
Interface RS-485
No more than 32 sensors may be connected to one bus during operation with RS-485.
When the RS-485 interface is activated, the analog output, digital output and alarm output are deactivated or
switched as if there was no object in the measuring range.
See separate RS-485 manual for further information.
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6.6
6.6.1
Touch panel
Function and design
The display consists of a monochrome 128 x 32 pixel LCD with RGB LED background illumination.
The sensor can be configured using four capacitive touch operator interfaces.
6.6.2
Dimensioning
24
3.5
7
7
20.5
10
Capacitive
operator
4
5
1
31.5
6.7
Memory
All changes made in the sensor are saved in nonvolatile (permanent) memory and are even retained after a
power outage.
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6.8
Standard deviation
The standard deviation is a term from the field of statistics or stochastics and is given in σ (sigma). With the
standard deviation it is possible to determine how great the dispersion of values around a mean value is.
Broadly speaking, the standard deviation is the average distance of all measured expressions of a
characteristic from the mean value.
The standard deviation is only useful if you consider measured values which should actually be identical but
which vary. For the sensor, this means that an even surface is observed vertically (or with an activated FLEX
MOUNT). The standard deviation is then a measure for the unevenness of the surface. All measuring points
within the preset field of view are taken into consideration.
Remember
• The standard deviation is a measure for the dispersion of the height values of all measured profile
points in mm.
• It can only be used on a plane that is either vertical with respect to the sensor or is parallel to the Flex
Mount reference.
• The plane must cover the entire field of view in the X direction.
6.8.1 Example
This is a profile of 190 points on an even surface as recorded by the sensor before evaluation (height in mm).
It is a typical line.
The red line represents the mean value, and the green lines each represent 1x standard deviation. The
standard deviation indicates how level the measured line is.
6.6
6.55
6.5
6.45
6.4
6.35
6.3
6.25
6.2
6.15
1
7
13
19
25
31
37
43
49
55
61
67
73
79
85
91
97
103
109
115
121
127
133
139
145
151
157
163
169
175
181
187
6.1
Standard deviation: 0.03 mm
Max-Min = 0.157mm
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7
7.1
Safety instructions and maintenance
General safety instructions
Intended use
This product is a precision device and is used for object detection and the preparation and/or provision of
measuring values as electrical quantities for a subsequent system. Unless this product is specially labeled, it
may not be used for operation in potentially explosive environments.
Commissioning
Installation, mounting and adjustment of this product may be performed only by a qualified person.
Installation
For mounting, use only the mechanical mountings and mechanical mounting accessories intended for this
product. Unused outputs must not be wired. In cable versions with unused cores, these cores must be
insulated. Always comply with admissible cable bending radii. Prior to electrical connection of the product, the
system must be disconnected from the power supply. In areas where shielded cables are mandatory, they
must be used as protection against electromagnetic disturbances. If the customer makes plug connections to
shielded cables, an EMC version of the connectors should be used, and the shield must be connected to the
connector housing across a large area.
7.2
Part Identification
Explanatory label
Certification label
Identification label
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Identification label
Class 2: Do not stare into beam
A Class 1 laser product is defined as safe
in normal operations under reasonably
foreseeable conditions, including longterm direct viewing of the beam, even
when exposure occurs while using
telescopic optics.
However, direct viewing of a Class 1 laser
product may still produce dazzling visual
effects, particularly in low ambient light.
Certification
label
Explanatory label
Class 1: No risk to eyes or skin
Class 2 lasers emit radiation in the visible portion of
the spectrum (400 nm to 700 nm). A short-term
exposure (duration to 0.25 s) is harmless to the eye.
Random short-term impacts (to 0.25 s) do not
damage the eye, because the blink reflex can
automatically adequately protect the eye against
longer irradiation. Class 2 lasers may be used
without any additional protection, if it is ensured that
for an application no intentional look longer than
0.25 s is required, or (for example, by drug
exposure) the blink reflex is suppressed.
FDA certification label
The sensor identification part contains the following information:
• Company Logo
• Sensor brand name
• QR-Code to find more info
• Article description and article number
• Production information
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7.3
Influence of ambient light
Ambient light from lamps, the sun, etc. in the view field of the sensor can lead to malfunctions or a reduction
of accuracy and should be avoided as much as possible.
7.4
Front (optics)
In the event of broken front window, broken display panel or loose or detached laser optics the sensor must
immediately be disconnected from the power supply and it must not be put back into operation until it has
been repaired by an authorized person.
Non-compliance with these safety instructions may result in hazardous radiation exposure!
ATTENTION!
The use of a sensor with a broken front glass or dissolved or detached
lens may result in hazardous radiation exposure.
7.5
Cleaning the sensors
The laser distance sensors do not require any maintenance, except that the front windows must be kept
clean. Dust and fingerprints can impair sensor function. It is normally sufficient to wipe the windows with a
clean (!), soft lens cleaning cloth. Alcohol or soapy water can be used in case of severe soiling.
The display and the keys must be kept free from dirt and moisture. Water and dirt on the keys can impair their
function.
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8
Error correction and tips
8.1
8.1.1
Examples of sensor setup
Simple distance measurement to an object
1. Connection: In accordance with connection
diagram
2. Installation: The sensor is installed so the
object is inside the measuring range during
the measuring procedure
3. Min DIST measurement type for output of
minimum distance to the object
Measuring
value
Measuring range
Object
8.1.2
Measurement of the average distance value of a dark object, digital signal at 130 mm distance
1. Connection: In accordance with connection
diagram
2. Installation: The sensor is installed so the
object is inside the measuring range during
the measuring procedure.
3. Avg DIST measurement type for average
value of distance to the object
4. OBJECT: Set dark
5. Set switching output DIGITAL OUT to 130
mm as the Point
Measuring
value
Measuring range
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8.2
Error correction
Error
No function
Green LED flashes
Red LED lights up
Touch panel cannot be operated
Touch panel does not react
Sensor does not provide the
expected measuring results
The sensor does not capture all
objects within the measuring
field
Unreliable measuring value:
The measuring value jumps
back and forth
Transmitting laser light is dim
Error correction
• Check connection. Power supply 15…28 VDC between pin 2
(+Vs, brown) and pin 7 (GND, blue)
• Short circuit at the digital output. Check connection.
• Object outside measuring field (near, far or to the side)
• Amplitude of the received signal is insufficient (e.g. in case of
soiling)
• Touch panel locked. Re-enable panel for operation by sliding a
finger over the 4 keys from left to right.
• RS-485 controls the sensor--> operation via the touch panel not
possible at the same time
• RS-485 locks the touch keys--> the touch panel was locked via
RS-485 and can only be re-enabled with a command via RS-485
• Clean panel. The panel is dirty or wet, which makes it harder to
press the keys
• The object is not in the measuring range
• Bright object, avoid direct reflexes from the transmitter to the
receiver
• The red visible laser beam does not represent the maximum
measuring field If the object is at the edge of this beam it could be
outside the measuring range
• Move object. The object is outside the measuring field vertically or
is in the blind region of the sensor
• The object is not in the measuring range
• Avoid bright object
• Avoid very dark object
• Too much ambient light
• Check measuring mode setting (MEAS TYPE)
Sync-In input is on High--> set to Low
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9
Revision history
23.11.2015
26.01.2016
8.04.2016
28.04.2016
31.05.2016
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Manual released in version 1.0
Integrated linearity and definition of response time and measuring repetition time
Integrated new article; optimized Laser characteristics
Additional information about the working principle of the filter PREZISION
New sensor type integrated. Chapter 6.1 updated
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