Leuze electronic OPSL 775 User manual

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone]
[email protected] • www.leuze.com
We reserve the right to make changes • DS_OPSL775_en_50103772.fm en 03-2015/12 50103772
Laser edge detector for counting in the
overlap flow
Counting rate > 3 million copies per hour
Edge detection of individual sheets from
0.1mm thickness
Detection range 5 … 150mm
Adjustable pulse stretching
Dynamic output pulse adaptation DPA
Simple mounting
5 … 150mm
12 - 30 V
DC
Accessories:
(available separately)
Cables with M12 connector (K-D …)
Mounting systems
IEC 60947...
IEC 60947...
IP 54
Dimensioned drawing
ATransmitter
BReceiver
CPotentiometer
DControl buttons
EIndicator diodes
FM12 connector, 5-pin
Electrical connection
Plug connection, 5-pin
OPSL 775 Laser edge detector
OPSL 775/4-150-S12 - 03

OPSL 775/4-150-S12 - 03 2015/12
Specifications
Optical data
Measurement range 1)
1) For objects with a luminosity coefficient of 18 … 90%
5 … 150mm
Edge height ≥0.1mm
Focus range 100 ± 10mm for ≥0.1mm edge height
Standard range 10 … 90mm/110 … 140mm for ≥0.3mm edge height
Threshold 5 … 10mm/140 … 150mm for ≥0.4mm edge height
Light source laser, pulsed
Laser class 2 in accordance with IEC 60825-1:2014
Wavelength 670nm (visible red light)
Max. Output power 2)
2) Average value
<1mW
Pulse duration 3)
3) Typical value
8.3μs
Timing
Counting rate 4)
4) Dependent upon edge height, color and surface structure of the object to be detected.
max. 1000 copies/s
Object speed ≤7m/s for 0.1mm edge height,
≤11m/s for ≥0.4mm edge height
Object sequence distances (overlap flow) > 1mm
Pulse width adjustment 0.5 … 512ms, fixed pulse width,
adjustable with 270° potentiometer
Dynamic pulse adaptation 12.5 … 50%
Delay before start-up ≤1.2s
Electrical data
Operating voltage UB12 … 30VDC (incl. residual ripple)
Residual ripple ≤15% of UB
Open-circuit current ≤100mA
Switching output …/4… pin 4: PNP, activated when edge detected
Signal voltage high/low ≥(UB-2V)/≤2V
Output current max. 30mA
Sensitivity adjustable, 270° potentiometer
Calibration input CAL 12 … 30VDC
Indicators
Green LED POWER ready
Yellow LED EDGE edge detected internally
Yellow LED STATUS output pulse edge
LED yellow STATUS off/flashing calibration process in progress/standby mode
LED yellow DPA dynamic pulse adaptation activated
Mechanical data
Housing aluminum
Color black anodized
Optics cover glass
Fastening dovetail or
2 M6 screws in place of the profile strip
Weight 690g
Connection type 5-pin M12 connector
Environmental data
Ambient temp. (operation/storage) -5°C … +55°C / -30°C … +70°C
Protective circuit 5)
5) 1=transient protection, 2=polarity reversal protection, 3= short-circuit protection for transistor output
1, 2, 3
VDE safety class III
Protection class IP 54
Standards applied IEC 60947-5-2
Attention!
It is imperative that the laser safety notices in section 8 are observed
Order guide
Designation Part No.
Laser edge detector OPSL 775/4-150-S12 50115063
Tables
Diagrams
0,4
0,3
0,1
110
90
10
5
150
140
0,3
0,4
Minimum edge height [mm]
Measurement range [mm]
Remarks
Function
characteristics:
The OPSL 775 edge detector
is an optoelectronic sensor
for the contactless detection
of object edges.
Operate in accordance with
intended use!
This product is not a safety sensor
and is not intended as personnel
protection.
The product may only be put into
operation by competent persons.
Only use the product in accor-
dance with the intended use.
OPSL 775

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] OPSL 775/4-150-S12 - 03
[email protected] • www.leuze.com
1 General
The OPSL 775 edge detector is especially suited for the counting of products being transported in layers on conveyor belts or transport
systems (overlap flow).
It is possible with the OPSL 775 to detect edges being conveyed within a range of 5 to 150 mm, as measured from the underside of the
device. The sensitivity range is dependent on the working distance. By focussing the laser beam to a distance of 100mm, detection of
the smallest possible edge height of 0.1mm is only possible within the focus range of 100mm ± 10mm.
If an edge is detected using the respective settings, the device generates a pulse at the switching output (pin 4). The settings remain
stored in such a way that they are protected against power interruption.
It is possible during the detection of edges that one and the same object is detected several times over. Commonly known as multiple
pulses, these can occur with a single object when, for example, print copies are being conveyed with the open edge and not the "spine
edge" leading. Likewise, interference caused by multiple pulses is to be anticipated for edges with discrepancies in lettering or color or
differences in reflection, but also for the individual pages of a bound printed copy. By selecting an appropriate setting, these multiple
pulses are selectively suppressed and the object can be correctly detected (see section 4).
2 Function buttons and indicators
Four LEDs serve as operational indicators and specify the current status of the device. Two potentiometers accessible from the outside,
as well as two control buttons, have been provided for operation, for example for adjustment and calibration during installation.
Fig. 1: OPSL 775 - Device overview
Attention!
It is imperative that the laser safety notices in section 8 are observed
Device connection (M12 connector) Fixing rails
Operation indicators (status LEDs) Sensor arrangement (overlap position and direction of movement) Operating elements for sensor adjustment
OPSL 775 Laser edge detector

OPSL 775/4-150-S12 - 03 2015/12
2.1 Operation indicators
The operation indicators serve as a function check during operation, as well as for the calibration and adjustment process
The following information is displayed:
Table 1
2.2 Operational controls
Fig. 2: OPSL 775 - operational controls
Potentiometer for output pulse width( )
This potentiometer allows the output pulse width to be modified in stages, whereby turning to the left / right effects an increase / decrease
of the output pulse width (left limit stop: Maximum pulse width = 512ms or right limit stop: Minimum pulse width = 0.5ms). If the
dynamic
pulse adaptation (DPA)
function is activated, the function of the potentiometer changes. See sections 4.3 and 4.5 for details regarding
setting of the potentiometer.
Sensitivity potentiometer (Sens)
This potentiometer allows adjustment of detection sensitivity. To increase / reduce sensitivity, turn the potentiometer to the left or right
accordingly. See section 4.3 for details.
Control button for calibrating the working distance (CAL)
Once mounted, the device must be calibrated to the specified maximum working distance. Push this button once to initiate the automatic
calibration process. See section 4.1 for details.
The settings will be saved even after power off/power on.
Control button for dynamic pulse adaptation (DPA)
Pressing this button will activate / deactivate the dynamic pulse adaptation DPA (see section 4.4).
The DPA active LED indicates that the DPA program is active when it remains illuminated.
In case of supply voltage breakdown the selected state is stored securely.
Designation Color of LED Illuminated Dark Flashing
POWER Green Device in operation Device not in operation –
EDGE Yellow
Shows that an edge has been
detected by the device.
Caution! Does not correspond
with the output pulse!
No edge detected –
STATUS 1)
1) This indicator has three functions:
1.During installation, the device is calibrated to a specified working distance. The indicator is illuminated during the calibration process.
2.The indicator is active (illuminated) while an output pulse is being generated.
3.If no output pulse is generated within 3s, the device switches to standby mode.
This is signaled by a flashing LED.
Yellow Output signal (pulse) /
Calibration process in progress No output pulse Ready (standby)
DPA Yellow Dynamic pulse adaptation
active Fixed pulse active –
Control button
Dynamic pulse adaptation (DPA)
Control button
Calibration of working distance (CAL)
Potentiometer
Output pulse width /
faulty pulse suppression ( )
Potentiometer
Sensitivity (Sens)
OPSL 775

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] OPSL 775/4-150-S12 - 03
[email protected] • www.leuze.com
3 Installation / alignment
3.1 General
In order that optimum functioning of the device can be guaranteed, the following points must be observed during installation:
1.The OPSL 775 must be installed in such a manner that vibrations are completely eliminated, otherwise there is a risk of counting
errors occurring.
2.Observe the permissible ambient temperature!
3.Avoid direct sunlight on the cover glass.
4.As a safeguard against hazards to persons, the laser beam should not be pointed at reflective surfaces in the case of an
uninterrupted overlap flow, as this may deflect the laser beam in an undefined direction (see section 8).
3.2 Mounting
Working distance and direction of overlap flow
Fig. 3: OPSL 775 - Working ranges
3.3 Direction of overlap flow and direction of overlap
The device will only be capable of counting the overlap flow correctly if it passes the laser beam going in the opposite direction (see fig.
4 left).
The OPSL 775 only counts those edges which are pointing in the conveying direction. Thus, in the case of an uninterrupted overlap flow,
the last copy is counted only once as the "falling edge" is not detected.
Fig. 4: OPSL 775 - Overlap flow and direction of overlap
Notice!
The correct direction of overlap is stamped onto the front side of the device.
Threshold Standard range
Focus range
Focus distance
Direction of movement of overlap flow
Laser beam
OPSL 775 OPSL 775
Direction of movement of the overlap flow
Rear edges are not counted!
Overlap position CORRECT Overlap position INCORRECT
OPSL 775 Laser edge detector

OPSL 775/4-150-S12 - 03 2015/12
3.4 Alignment
It should be ensured during installation of the device that the overlap flow passes parallel to the basic unit, or to its underside (see fig. 5
left).
Fig. 5: OPSL 775 - Correct alignment
4 Commissioning
As it is relatively difficult to check the apparent optimum settings for influence or effectiveness with regard to the respective intended
use, it is recommended that all setting procedures are performed with a defined reference sample. Furthermore, we recommend the
utilization of an oscilloscope to facilitate convenient visualization of the progress of the "Edge detected" output signal (pin 4) in relation
to the reference sample.
4.1 Calibrating the working distance
Following installation/mounting, the device must be calibrated to the specified working distance. The actual calibration is performed
automatically. A sheet of white paper is used as a reference surface.
The following steps are to be performed for calibration:
1.Set the Sens potentiometer for sensitivity to the middle position.
2.Place a sheet of white paper flat underneath the device so that the laser beam is directed onto it.
3.Press the CAL calibration button briefly once (> 50ms).
The status display is illuminated momentarily for the duration of the calibration procedure.
ALTERNATIVE: Apply a high signal (12 ... 30VDC) for a period of > 1s at the input CAL (Pin 2).
Calibration is concluded and it should now be possible to count the edges in the overlap flow with a constant working distance. Under
certain circumstances, the calibration procedure may have to be repeated. In the event that no edges can be detected, please refer to
the procedure for setting the OPSL 775 in section 5.
4.2 General
There are three possibilities for optimum adaptation of the device for the specified counting tasks:
1.Setting the sensitivity allows detection or suppression of small or less distinct edges.
2.A program is available which can be selected to perform a dynamic adaptation of the output pulse width automatically in
correlation with the sequential speed of the edges (recommended operating mode).
3.The device also offers the possibility of setting the desired output pulse width manually. This function is particularly suited
for more difficult application conditions as a blockage time for the suppression of faulty pulses can be set simultaneously with
a fixed output pulse width independent of the sequential speed of the edges.
OPSL 775
OPSL 775
CORRECT INCORRECT
OPSL 775

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] OPSL 775/4-150-S12 - 03
[email protected] • www.leuze.com
4.3 Adjusting sensitivity (Sens potentiometer)
If the edges can not be detected correctly using the presetting specified in section 4.1, it is possible to increase the detection rate by
adapting the sensitivity. Adjustment is performed using the Sens (sensitivity) potentiometer. Rotation to the left or right effects an incre-
ase/reduction of the sensitivity.
Medium sensitivity is wholly adequate for newspapers, magazines or similar objects. For extremely small edges or high sequential
speeds of edges, detection accuracy can be improved by increasing the sensitivity. Structured edges can lead to counting errors. These
counting errors can be avoided by reducing the sensitivity.
Fig. 6: OPSL 775 - Setting sensitivity
4.4 Dynamic pulse adaptation (DPA program)
The dynamic pulse adaptation has already been activated at the factory and is signaled via the DPA LED. Actuate the DPA button for
> 50ms in standby mode to deactivate the program; the DPA LED extinguishes. Pressing the button again will return you to your original
position.
The current state is saved permanently.
Dynamic pulse adaptation is only suitable for relatively regular edge distances (example: printing of newspapers). The program adapts
the output pulse width permanently to the period directly following the object. The distance of the individual objects thus corresponds
to 100%. An output pulse corresponding to 50%, 25% or 12.5% of the period following the object is generated in correlation with the
setting of the pulse width ( ) potentiometer (see fig. 7).
If the calculated output pulse width is greater than the measured object sequence time, the actual pulse is automatically shortened in its
duration. The output pulse is turned off no later than the rising pulse edge of the next detected edge. It is therefore not possible that the
electronics suppresses detected edges. Interference pulses are successfully suppressed by the internal hysteresis of the detector circuit.
Fig. 7: OPSL 775 - Effect of dynamic pulse adaptation
Table 2
Attention!
The output pulse width can only be set to one of three stages: Maximum – Intermediate position – Minimum.
Position Designation Output pulse width T [%]
Maximum max 50
Intermediate position -- 25
Minimum min 12.5
Potentiometer position:
High: High sensitivity
Medium: Medium sensitivity
Low: Low sensitivity
T
t
Edge LED
Output pulse
Direction of movement
= Pulses are suppressed
= Pulse length ist limited
OPSL 775 Laser edge detector

OPSL 775/4-150-S12 - 03 2015/12
4.5 Setting the output pulse width ( ) - Fixed pulse active (without DPA)
If measurement with the dynamic pulse adaptation according to section 4.4 is not desired or an error-free counting is not possible, the
output pulse width can be set to a fixed value by turning off this function. For this, the DPA button must be pressed for > 50ms so that
the DPA LED extinguishes.
This setting is stored in the device permanently.
For example, if the edges are blurred or rounded, there may be a detection of multiple pulses. Through an extension of the output pulse
width, these interference pulses are selectively suppressed, and thus counting reliability is increased. The desired output pulse width T
can be adjusted using the pulse width ( ) potentiometer. Rotating to the left or to the right effects an increase or reduction of the
output signal pulse width.
Fig. 8: OPSL 775 - Output pulse with fixed pulse time
Attention!
To avoid suppression of output pulses, it must be ensured that the output pulse width is not greater than the period
following the edge!
We recommend using the dynamic pulse adaptation DPA wherever possible.
T
t
Edge LED
Output pulse
Direction of movement
= Pulses are suppressed
OPSL 775

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] OPSL 775/4-150-S12 - 03
[email protected] • www.leuze.com
Switching between range modes
If the entire adjustment range of 0.5 … 512ms is not required, a maximum adjustment range can be defined by one of three different
modes using an additional function (see table 3).
Table 3
The following procedure (fig. 9) must be initiated to set another range mode.
A customized resolution over 4 adjustment ranges is thus yielded.
Fig. 9: OPSL 775 - Procedure for switching over the range mode
Range mode Adjustment range [ms] STATUS 1) LED
1) The LED indicator is only valid for the changeover procedure when changing the range mode!
DPA active 1) LED
0 2)
2) Factory setting
0.5 … 512
10.5 … 128
20.5 … 32
30.5 … 8
Attention!
If no button is actuated within 8s of calling up the function, the respective function is canceled and no change is ini-
tiated. The system is automatically restarted.
Start
Switch off voltage supply
Press the CAL button and hold
pressed
Switch on voltage supply again
Release the CAL button
Alternative flashing of
DPA active and STATUS LEDs
The mode last stored is displayed
(table 3)
Continue to actuate the CAL
button until the desired mode is
indicated
(0 -> 1 -> 2 -> 3 -> 0 -> …)
The selected mode is displayed
(table 3)
Press the CAL button and hold
pressed
The new value is stored and
a reset is initiated,
release the CAL button
Alternative
flashing of LEDs?
End
NO
YES
OPSL 775 Laser edge detector

OPSL 775/4-150-S12 - 03 2015/12
5 Recommended procedure for setting the OPSL 775
Fig. 10: OPSL 775 - Setting procedure
Start
Sens potentiometer
in intermediate position
Perform calibration
Edge detection
possible?
NO
YES
Counting result
correct?
NO
YES
End
Counting result
correct?
NO
YES
Edge detection
possible?
NO
YES
Adjust Sens potentiometer
to the left: +; right: –
Adjust pulse width
potentiometer to the left: +;
right: –
Repeat calibration with Sens
potentiometer displaced from
intermediate position
Deactivate DPA and set pulse
width manually
Run through setting
range completely?
NO
YES
Run through setting
range completely?
NO
YES
OPSL 775

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] OPSL 775/4-150-S12 - 03
[email protected] • www.leuze.com
6 Diagnosis in the event of an error
Table 4
7 Cleaning and storage
A damp cloth can be used for cleaning of the device housing.
Store in a clean, temperature-regulated and dry place!
Error Possible cause Remedial measures
POWER LED does not light up green No input voltage Check voltage supply
No edge detection possible
(EDGE LED not illuminated)
Working distance too great Check working distance and adapt as necessary
(section 3.2)
No calibration performed Perform calibration procedure (section 4.1)
Sensitivity not ideal Perform setting procedure (sections 4.3 or 5)
Direction of overlap flow/direction of movement
incorrect Check settings (section 3.3)
Object to be counted not suitable Test with reference (section 3)
No laser beam (Caution! Refer to the laser safety
notices in section 8!)Notify the manufacturer
Edge counting faulty
Sensitivity/calibration not ideal, influence of ambient
light
Readjust sensitivity (sections 4.3 or 5) /
repeat calibration procedure (section 4.1)
Error due to multiple pulses Check pulse width adjustment and readjust /
run DPA program (recommended) as necessary
Objects to be counted not ideal Test with reference
Sequential speed of edges outside of specification Check period following object, perform a test at low
speed
The output pulse width can only be
adjusted in minimum range Incorrect range mode set Switch mode over to desired range (section 4.5)
No output pulse, although EDGE LED is
detecting an edge Contact problem Check connection cable
Notice!
Faulty results due to changes within the overlap flow with regard to color change, surface structure and edge shape of the
objects to be counted or the distance of the objects from the detector may necessitate renewed calibration and resetting of
the device to the new conditions, and do not necessarily relate directly to malfunctioning of the device.
Attention!
The optics cover (laser beam emission) on the underside of the device may only be cleaned with a non-scratch cloth specially
designed for cleaning lenses (micro-fiber cloth)!
OPSL 775 Laser edge detector

OPSL 775/4-150-S12 - 03 2015/12
8 Laser safety notices
ATTENTION, LASER RADIATION – LASER CLASS 2
Never look directly into the beam!
The device satisfies the requirements of IEC 60825-1:2014 (EN 60825-1:2014) safety regulations for a product in laser class 2 as well
as the U.S. 21 CFR 1040.10 regulations with deviations corresponding to "Laser Notice No. 50" from June 24th, 2007.
Never look directly into the laser beam or in the direction of reflecting laser beams!
If you look into the beam path over a longer time period, there is a risk of injury to the retina.
Do not point the laser beam of the device at persons!
Intercept the laser beam with an opaque, non-reflective object if the laser beam is accidentally directed towards a person.
When mounting and aligning the device, avoid reflections of the laser beam off reflective surfaces!
CAUTION! Use of controls or adjustments or performance of procedures other than specified herein may result in hazardous light
exposure.
Adhere to the applicable legal and local regulations regarding protection from laser beams.
The device must not be tampered with and must not be changed in any way.
There are no user-serviceable parts inside the device.
Repairs must only be performed by Leuze electronic GmbH + Co. KG.
NOTICE
Affix laser information and warning signs!
Laser information and warning signs are affixed to the device (see ). In addition, a self-adhesive laser warning sign (stick-on label) is
supplied (see ).
Affix the laser warning sign near the device if the attached laser information and warning signs are concealed due to the installation
position. Affix the laser warning sign so that it is legible without exposing the reader to the laser radiation of the device or other
optical radiation.
LASER RADIATION
C
V
C
V
C
V
ʄ= 400 nm – 700 nm
Po  1 mW
IEC 60825-1:2014
CLASS 2
LASER PRODUCT
DO NOT
STARE INTO BEAM

ALaser exit opening
BLaser warning sign
CLaser information sign with laser parameters
A
C
B
B
OPSL 775