Baumer OM70 User manual

Operating instructions.
OM70 multi-spot.

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Contents
1General information......................................................................................................................3
1.1 Concerning the contents of this document .....................................................................................3
1.2 Intended use ...................................................................................................................................3
1.3 Safety..............................................................................................................................................3
2Commissioning .............................................................................................................................4
3Connection ....................................................................................................................................8
3.1 Connection cable ............................................................................................................................8
3.2 Pin assignment and connection diagram........................................................................................9
4Installation ...................................................................................................................................10
4.1 Mounting .......................................................................................................................................10
4.2 Sensor reference levels ................................................................................................................10
4.3 Measuring field definition ..............................................................................................................11
4.4 Mounting: ......................................................................................................................................13
4.5 Installation accessories.................................................................................................................14
5Configuration ..............................................................................................................................15
5.1 Overview of control elements .......................................................................................................15
5.2 Function tree.................................................................................................................................18
5.3 LIVE MONITOR ............................................................................................................................19
5.4 MEAS TYPE .................................................................................................................................21
5.5 OBJECT........................................................................................................................................22
5.6 PRECISION ..................................................................................................................................22
5.7 FIELD OF VIEW ...........................................................................................................................25
5.8 ANALOG OUT ..............................................................................................................................27
5.9 DIGITAL OUT................................................................................................................................29
5.10 SYSTEM .......................................................................................................................................31
5.11 SETTING ......................................................................................................................................33
6Function and definition ..............................................................................................................34
6.1 Sensors data sheet.......................................................................................................................34
6.2 Functional principle.......................................................................................................................38
6.3 Measuring repetition time and response time...............................................................................40
6.4 Hysteresis .....................................................................................................................................41
6.5 Object to be measured .................................................................................................................43
6.6 Interfaces and outputs ..................................................................................................................44
6.7 Touch panel...................................................................................................................................52
6.8 Memory.........................................................................................................................................52
6.9 Standard deviation........................................................................................................................53
7Safety instructions and maintenance.......................................................................................54
7.1 General safety instructions ...........................................................................................................54
7.2 Part Identification ..........................................................................................................................54
7.3 Influence of ambient light..............................................................................................................56
7.4 Front (optics).................................................................................................................................56
7.5 Cleaning the sensors ....................................................................................................................56
7.6 Disposal ........................................................................................................................................56
8Error correction and tips............................................................................................................57
8.1 Examples of sensor setup ............................................................................................................57

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8.2 Error correction .............................................................................................................................58
9Revision history ..........................................................................................................................59
1 General information
1.1 Concerning the contents of this document
This manual contains information about the installation and initial setup of Baumer OM70 multi-spot sensors.
It is a supplement to the mounting instructions supplied with each sensor.
1.2 Intended use
The Baumer OM70 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.
Read these operating instructions carefully and follow the safety instructions!

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2 Commissioning
After the sensor is connected and installed, configure it via the display and perform the other application-
specific 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.
Connection
Installation
Application specific settings
Optional settings
Let's get started
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 = Back
ESC 2 sec. = Run mode
UP = Up/increase value
DOWN = Down/decrease value
SET = OK
SET 2 sec. = Save value
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.
English
Deutsch
Italiano
Français
1
1
2
4
LANGUAGE
English
3

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Installation
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.
2
Measuring field
width right
Measuring field
width left
Right
Left
Blind region
Start of
measuring range
FIELD OF
VIEW
End of
measuring range
Reference point
DISTANCE function

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Application specific settings
1
In the factory settings Avg DIST is predefined
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= Average value of all
measured points
Max DIST = Distance to the furthest
measuring point
Min DIST = Distance to the closest
measuring point
Avg DIST Max DIST
Min DIST
3a
3

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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.
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.
4

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3 Connection
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.
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.
ATTENTION!
The IP protection class is valid only if all connections are connected as
described in the technical documentation.
ATTENTION!
Connection, installation and commissioning may only be performed by qualified
personnel.
ATTENTION!
Incorrect supply voltage will destroy the device!

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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
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.
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
are also important.
19 mm
Level R3
Laser
beam
Level R1
Level R2
13 mm
Tightening torque
max. = 1.2 Nm
ATTENTION!
Connection, installation and commissioning may only be performed by qualified
personnel. Protect optical surfaces from moisture and dirt.
Left
Right

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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.
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".
Measuring
field width
right
Measuring range
Measuring
field
Measuring
field width
left
Blind range
Right
Left
Measuring axis
Start of measuring range Sdc
0 V / 4 mA
Reference point
function DISTANCE
Z
X
Outside measuring range
R2
Measuring field
width
End of measuring range
Sde 10 V / 20 mA

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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.
Measuring
range
Measuring
field
Blind region
Object
Start of measuring range Sdc
End of measuring range Sde
R2

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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 on object

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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
5.1.1 Display modes
Run mode
The sensor is in run mode, the measuring value is
displayed in large characters.
Main menu
In the main menu the active mode is displayed at the top,
and the measuring value is displayed at the bottom.
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
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.
Keys locked
If this symbol is on the left side of the screen, the touch
panel is locked for operation.
112.42 mm
AVG DIST
112.42 mm
MEAS TYPE
AVG DIST
AVG DIST
112.42 mm
Graphical display
LEDs
Touch panel: Four
touch-sensitive keys
ESC
UP
DOWN
SET
Avg DIST
112.42 mm
MEAS TYPE

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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:
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:
RS-485 controls
the sensor
Touch keys locked
by RS-485

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5.1.4 Further key functions
Action
Reaction
Slide over all keys from left to right
Unlock locked touch panel
Only if touch panel is locked
Slide over all keys from right to left
Jump directly to run mode
Can be used from any menu
5.1.5 LEDs on the sensor
LED
Lights up
Flashes
Yellow
Out1 activated
Switching output1 active
-
Red
Out2 activated
No measuring object inside the measuring
field. Alarm output active.
Insufficient excess gain
Object close to signal gain (Not enough light).
Performing setting OBJECT (Bright or Dark).
Green
Supply voltage
Sensor ready for operation.
Short circuit
Check connection on digital output 1 or 2.
Avg DIST
112.42 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 to reference surface
LIVE MONITOR to object
Display example:
LIVE MONITOR
30° ---- mm
Display example:
LIVE MONITOR
15° 21.5mm
LIVE MONITOR
15,7° 13mm
Angle in °
(To object or
reference surface)
Position of object
LEFT EDGE RISING
Right
Left
Angle
measuring
value
(in °)
Reference surface
Reference axis
Right
Left
Object with shortest
distance from “Start of
measuring range”
Reference surface
K
L
Reference Point
Measuring value
position in mm
Angle
measuring
value
(in °)
LEFT EDGE RISING
(in mm)
End of measuring
range
NOTE
To avoid measurement errors, the angle should be 0°

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“End of measuring range”1 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
smallest distance to “Start of measuring range”1.
The requirements for the object with respect to the minimum width
1
and height1must be met.
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
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.