Pepperl+Fuchs LGS Series User manual

LGS Series
Switching Automation Light Grid
FACTORY AUTOMATION
MANUAL

With regard to the supply of products, the current issue of the following document is applicable: The
General Terms of Delivery for Products and Services of the Electrical ndustry, published by the
Central Association of the Electrical ndustry (Zentralverband Elektrotechnik und Elektroindustrie
(ZVE ) e.V.) in its most recent version as well as the supplementary clause: "Expanded reservation
of proprietorship"
LGS Series

LGS Series
Contents
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1 Introduction 5
2 Declaration of Conformity 6
2 1 Declaration of Conformity .............................................................................6
3 Safety 7
3 1 Symbols Relevant to Safety ..........................................................................7
3 2 ntended Use ................................................................................................7
4 Product Description 9
4 1 Use and Application......................................................................................9
4 2 ndicators and Operating Elements...............................................................9
4 3 nterfaces and Connections ........................................................................11
4 4 Accessories ................................................................................................12
4 5 Scope of Delivery ........................................................................................12
5 Installation 13
5 1 Preparation .................................................................................................13
5 2 Mounting .....................................................................................................13
5 3 Multiple Positions ........................................................................................16
5 4 Connecting the Sensor Rails.......................................................................17
5 5 Storage and Transportation .........................................................................20
6 Commissioning 21
6 1 Final Assembly ...........................................................................................21
6 2 Commissioning the Light Grid .....................................................................21
7 Operation 22
7 1 Operating the Light Grid ..............................................................................22
7 1 1 Object Detection (Overhang Control) .....................................................27
7 1 2 Monitoring the Object Height with Height Controls .................................28
7 1 3 Object dentification................................................................................29
7 2 Commissioning and Operating the Light Grid with O-Link..........................30
8 Maintenance and Repair 32
8 1 Maintenance ...............................................................................................32
8 2 Repair .........................................................................................................32
9 Troubleshooting 33
9 1 Troubleshooting ..........................................................................................33
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LGS Series
Contents
10 Appendix 35
10 1 Technical Data ........................................................................................... 35
10 2 Type Code .................................................................................................. 37
10 3 Response Times and Number of Beams .................................................... 38
10 4 Profile Length and Weight .......................................................................... 41
10 5 Accessories ............................................................................................... 42
10 5 1 nstallation Accessories ......................................................................... 42
10 5 2 Connecting Cables ................................................................................ 46
10 5 3 Accessories for O-Link Operation ......................................................... 46
10 6 Parameterizing the Light Grid ..................................................................... 47

LGS Series
ntroduction
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1 ntroduction
Congratulations
You have chosen a device manufactured by Pepperl+Fuchs. Pepperl+Fuchs
develops, produces and distributes electronic sensors and interface modules for
the market of automation technology on a worldwide scale.
Before you install this device and put it into operation, please read the operating
instructions thoroughly. The instructions and notes contained in this operating
manual will guide you step-by-step through the installation and commissioning
procedures to ensure trouble-free use of this product. By doing so, you:
■ guarantee safe operation of the device
■ can utilize the entire range of device functions
■ avoid faulty operation and associated errors
■ reduce costs from downtimes and incidental repairs
■ increase the effectiveness and operating efficiency of your plant.
Store this operating manual somewhere safe in order to have it available for future
work on the device.
Directly after opening the packaging, please ensure that the device is intact and
that the package is complete.
Contact
f you have any questions about the device, its functions, or accessories, please
contact us at:
Pepperl+Fuchs GmbH
Lilienthalstraße 200
68307 Mannheim, Germany
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Symbols used
The following symbols are used in this manual:
Handling instructions
You will find handling instructions beside this symbol
Note
This symbol draws your attention to important information.
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LGS Series
Declaration of Conformity
2 Declaration of Conformity
2.1 Declaration of Conformity
This product was developed and manufactured under observance of the
applicable European standards and guidelines.
The product manufacturer, Pepperl+Fuchs GmbH, D-68307 Mannheim, has a
certified quality assurance system that conforms to SO 9001.
Note
A Declaration of Conformity can be requested from the manufacturer.
ISO9001
LGS Series

LGS Series
Safety
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3 Safety
3.1 Symbols Relevant to Safety
3.2 ntended Use
The LGS automation light grid is a compact optical light grid that consists of a
emitter strip and a receiver strip. The detection field to be monitored is located
between the emitter strip and the receiver strip. The electronics for level
measurement are located in the receiver strip.
Areas of Use
■ Object detection in the packaging and material handling sectors
■ Detecting and counting irregular objects
■ Measuring and sorting objects of different heights (height control)
■ Presence and overhang control in material handling systems
■ Overhang control of load heights in transport systems and material
handling applications
■ Web sag monitoring
■ Position or shape monitoring
■ Gap detection
Always operate the device as described in these instructions to ensure that the
device and connected systems function correctly. The protection of operating
personnel and plant is only guaranteed if the device is operated in accordance
with its intended use.
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
Caution!
This symbol indicates a possible fault.
Non-observance could interrupt the device and any connected systems and
plants, or result in their complete failure.
Caution!
Not a safety component
The light grid is not a certified safety light grid in accordance with EN 61496. t is
also not a safety component under the terms of the EU Machinery
Directive 2006/42/EC. The light grid must therefore not be used for the purpose of
preventing risk to individuals or parts of the body.
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LGS Series
Safety
The device and its input and output circuits must be operated from a power supply
that fulfills the requirements of PELV/SELV systems.
Only use recommended original accessories.
The operating company bears responsibility for observing locally applicable
safety regulations.
nstallation and commissioning of all devices may only be performed by trained
and qualified personnel.
User modification and or repair are dangerous and will void the warranty and
exclude the manufacturer from any liability. f serious faults occur, stop using the
device. Secure the device against inadvertent operation. n the event of repairs,
return the device to your local Pepperl+Fuchs representative or sales office.

LGS Series
Product Description
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4 Product Description
4.1 Use and Application
LGS series: Touch it, save it—intelligent automation light grid with extras
Features
■ Adjustable beam crossover for refining the resolution. The beam crossover
does not alter the response time
■ Optical synchronization of both outer beams possible
■ Three separate outputs for height control
■ Light-on or dark-on options
■ Parameterizable object detection
■ Parameterizable beam suppression (blanking)
■ Operation via touch field or external input
■ O-Link interface for service and process data, and for parameterization
Description
n addition to the usual standard functions, LGS series light grids feature a range
of useful extra functions previously found only in much more expensive device
classes. These functions include ultra-quick object detection even with beam
crossover, the option of identifying objects, and remote communication via an O-
Link interface. The blanking function can be used to deactivate two connected
beam areas if unfavorable installation conditions result in plant components
extending into and interrupting the detection field. The standby operating mode is
another feature for applications where light grids are not in continuous operation.
The LGS is modular in design and available with five different beam gaps (8 mm,
17 mm, 25 mm, 50 mm, and 100 mm) and detection field heights ranging from
100 mm to 3200 mm to enable extensive monitoring of the evaluation area.
ntegrated signal evaluation means it is not necessary to mount a separate
additional switching device. The slimline profiles can easily be mounted using
existing holes, the rear continuous groove, or the fixtures available as
accessories, enabling light grids in the LGS series to be used to maximum effect
and tailored to the specific application.
The switching light grid has one switching output, which displays an identified
object, and three height control outputs.
The LGS receiver strip also has an O-Link interface, enabling advanced
parameterization, extensive configuration, identification, and diagnosis of the light
grid. This requires operation on an O-Link master.
The SC (stability control) diagnostic output indicates an insufficient functional
reserve, e.g., due to misalignment or soiling. The receiver strip can be taught in for
various objects via a teach-in input. The touch button can also be replicated
externally via this input.
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LGS Series
Product Description
4.2 ndicators and Operating Elements
Emitter strip
Figure 4.1 Function indicator on the emitter strip
Receiver strip
Figure 4.2 Function indicator on the receiver strip
On the receiver strip behind the plastic front panel there are 12 illuminated
pictograms. The pictograms indicate the functional state and allow you to
parameterize the system. The two outer pictograms indicate the position of the
two operating buttons (capacitive touch buttons) for parameterization.
2Operating indicator: ndicates power on or power save mode
3Status indicator: ndicates transmission power, fault state, or active test input
2Operating indicator: ndicates power on, power save mode, active O-Link, or fault state
3Status indicator: ndicates detection field status, functional reserve, or fault state
23
23
Q
H1 H2 H3 F2

LGS Series
Product Description
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Figure 4.3 Touch field: Function indicators on the receiver strip
Touch buttons
Function status indicators, level 1
Function status indicators, level 2
1 Menu button Function selection
12 OK button Function confirmation
4 Detection field status
and object teach-in
switching output
Teach in object or display object detection
5 Height output 1 Teach in height 1 or display taught-in height 1
6 Height output 2 Teach in height 2 or display taught-in height 2
7 Height output 3 Teach in height 3 or display taught-in height 3
8 Object position Object detection for moving objects
Object detection for static objects
9 Crossover Beam crossover active
Beam crossover deactivated
10 Object tolerance Tolerance beam for objects active
Tolerance for objects deactivated
11 F2 Activate second level
4 Q (F2) Beam suppression (blanking) for interfering objects
5 H1 (F2) nverse operation (gap detection)
6 H2 (F2) Light-on or dark-on switching type
7
6
5
4
2
1
11
10
9
8
12
3
Q
H1
H2
H3 F2

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LGS Series
Product Description
4.3 nterfaces and connections
The electrical connections are established using two M12 connectors. The
transmitter strip has a cable with a 4-pin connector and the receiver strip a cable
with an 8-pin connector.
Transmitter strip
Figure 4.4 Emitter unit connection layout
Receiver strip
Figure 4.5 Receiver strip connection layout
7 H3 (F2) Reset factory setting
8 Object position (F2) Signal tracking active
Signal tracking inactive
124 V DC
2Range ( n)
30 V DC
4Test ( n)
1+ UB
2SC (Stability Control, Out)
30 V DC
1
3
4
2
1
4
6
7
8
53
2

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Product Description
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O-Link communication is established via the C/Q connector (pin 4).
4.4 Accessories
An extensive range of accessories with detailed descriptions can be found in the
appendix see chapter 10.5.
4.5 Scope of Delivery
The scope of delivery includes:
■ Emitter strip and receiver strip
■ Manual
■ Cable lug and spare housing screw
Fixtures and cables are not included in the scope of delivery. See the appendix or
visit http://www.pepperl-fuchs.com for a selection of compatible mounting aids
and recommended cables.
4C/Q ( O-Link / Out)
5H1 (Out)
6H2 (Out)
7H3 (Out)
8Teach-in ( n)

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nstallation
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5 nstallation
5.1 Preparation
Unpacking the Device
1. Check the packaging and contents for damage.
n the event of damage, inform the shipping company and notify the
supplier.
2. Check the package contents against your order and the shipping documents
to ensure that all items are present and correct.
Should you have any questions, direct them to Pepperl+Fuchs.
3. Retain the original packaging in case the device is to be stored or shipped
again at a later date.
5.2 Mounting
Remember to keep the detection field free of obstacles wherever possible. The
first or last beam in particular is used for visual synchronization between the
emitter strip and the receiver strip. f both synchronous beams are interrupted, the
detection field is no longer measured.
Note
Preventing Extraneous Light and Reflections
Situations in which the receiver is exposed to powerful extraneous light (e.g., from
flashing lamps or direct sunlight) must be avoided. The influence of other optical
sensors should also be prevented through suitable positioning or the use of
partitions. There must be no reflective surfaces in the detection field, since
reflections may prevent the detection of objects.
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LGS Series
nstallation
Figure 5.1 Light Grid Dimension Drawing
To mount the slim panels, use customized bore holes (d = 4.5 mm for M4 screws)
or a rear, continuous groove (for flat M6 nuts in accordance with SO 4035).
Various fixtures are available for mounting the light grid see chapter 10.5.1.
Mounting Using the Rear Groove
There is a continuous groove located on the rear of the strip on the light grid.
Standard flat M6 nuts in accordance with D N 4035 fit into this groove. Once these
nuts have been inserted, they can be used to mount the light grid.
Mounting Using Holes Drilled by the Customer
The light grids can be mounted using user-defined holes. The maximum screw
size is M4. Make sure you follow the instructions when positioning the hole.
mproper handling can damage the internal electronics.
Drilling Holes
1. Mark the position of the holes. Focus on the continuous line on the side of the
light grid .
2. Mark the position of the holes.
3. Using a 4.5 mm diameter drill, drill all the way through the housing.
4. Deburr the hole.
5. Repeat the first steps until all holes have been drilled.
6. Make sure that the aluminum chips do not scratch the optical surface.
Q
H1
Fix
H2 H3 Fn
Transmitter
Detection field + 159
n Beam 1. Beam
Receiver
Detection field
5
21.2 137.8
20
30.5

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nstallation
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Secure the light grid in its final position using the drilled holes.
Figure 5.2 Position of the central point for the mounting holes
Figure 5.3 Mounting holes
Mounting
1. Align the emitter strip and receiver strip so they are parallel with one another
and at the same height.
2. The strips must be aligned with one another with an accuracy of
approximately ±5°.
3. During mounting, ensure that the two strips have the same orientation. (Cable
outlet facing either upward or downward on both strips.)
4. The maximum detection range must not be exceeded.
9

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LGS Series
nstallation
Figure 5.4 Maximum offset between emitter and receiver
5.3 Multiple Positions
The illustration below indicates how to mount two light grids with a swapped
emitter and receiver.
Figure 5.5 Multiple assignment of two pairs of light grids
Offset Y [mm]
Distance X [m]
Characteristic response curve
800
700
600
500
400
300
200
100
0
0 1 2 3 4 5 6 7 8
x
y
Note
f several light grids are operating close to each other, care must be taken to
prevent cross-talk. This can be achieved by swapping the emitter and receiver, or
by ensuring a sufficient distance between the two light grids.
E1 S1 S2 E2

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nstallation
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5.4 Connecting the Sensor Rails
Connecting the Emitter Strip
Figure 5.6 Emitter unit connection layout
Connect the emitter strip after the top pinout. nsulate the unused wires. See the
switching example shown on the following page see Figure 5.8 on page 19.
Range input
The transmitter strip has a range input (pin 2) that adapts the transmitting power to
the relevant sensing range in the application. The transmitter attains a maximum
sensing range of 1.6 m (or 2 m with option /35) if the input is open. If the
application requires a longer sensing range (6 m or 8 m with /35), the input
must be connected either to + UB or 0 V The reduction in the transmitting
power also prevents extraneous light from interfering with other sensors located in
the direct vicinity.
Test input
The transmitter strip has a test input (pin 4) that can be used to test the function of
all switching outputs on the system by activating the test input or operate the
system in energy-saving mode. The input can be connected either to + UB or 0 V.
Caution!
Electrical connection
Wiring work that requires the opening and closing of electrical connections must
always be performed with the power disconnected.
Use a Class 2 power supply to supply the power (certified according to UL 1310).
124 V DC
2Range ( n)
30 V DC
4Test ( n)
1
3
4
2

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LGS Series
nstallation
■ Function test: When the strip is activated for less than 1.2 s, the
transmitter beams switch off and the outputs on the receiver strip switch on
in the same way as when a beam is interrupted. The outputs for the height
control can also be tested in this way, if the relevant height control
parameters are available.
■ Energy-saving mode: f the test input is activated for longer than 1.2 s, the
system switches to energy-saving mode with minimal energy consumption
and no functions. The light grid reverts back to normal mode immediately
when the test input is deactivated.
Connecting the Receiver Strip
Figure 5.7 Receiver strip connection layout
Connect the receiver strip after the top pinout. All outputs are short-circuit proof.
nsulate the unused wires. See the switching example shown on the following
page see Figure 5.8 on page 19.
Stability Control Output (SC)
The SC switching output indicates an insufficient functional reserve and makes
status indicator 3 flash at 4 Hz with a delay of 5 seconds. The SC switching output
only switches off once there is sufficient functional reserve again, for example, if
the front lenses are cleaned or the strips are readjusted.
Switching Output (C/Q)
This signal output is active (switched on for dark on, opposite for light on) if an
object is within the detection range, or if a taught-in object is detected. This is
shown by status indicator 3 and 4 respectively.
1+ UB
2SC (Stability Control, Out)
30 V DC
4C/Q ( O-Link / Out)
5H1 (Out)
6H2 (Out)
7H3 (Out)
8Teach-in ( n)
1
4
6
7
8
53
2

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nstallation
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Height Control Outputs (H1, H2, H3)
These three independent signal outputs are active if objects in the detection field
match the position of the taught-in height controls see chapter 7.1.2. The outputs
then report the same statuses as the function status indicators 5 (H1), 6 (H2), and
7 (H3). f no height controls are parameterized, the signal outputs are always
inactive.
Connecting External Operating Buttons (Teach-In Input)
The receiver strip is equipped with a teach-in input. This input can be used to
route out the two operating buttons and to connect them externally. The function
of the menu button is connected via an external normally-open contact to + UB.
The OK button is connected via an external normally-open contact to 0 V. To
prevent a short circuit when both normally-open contacts are actuated
simultaneously, a 1 k/2 W resistor must be installed between the NO contact
and 0 V.
Parameterization can be locked to prevent the menu button being pressed
unintentionally (keyboard lock). To do this, set the external teach-in input
permanently to + UB.
Switching Example
The LEDs on the outputs are optional.
Figure 5.8 Connection example LGS
Grounding/Shielding
The system does not require grounding in standard cases. f EMC faults occur,
use a grounding cable with the cable lug supplied in the scope of delivery. The
grounding/shielding must always be mounted on the receiver strip. This is purely
functional grounding rather than protective grounding. t acts solely as a down
conductor for cable-related faults and is not subject to any safety guidelines (e.g.,
personnel protection).
Ground/shield the device as follows:
24 V
0 V
Test
Transmitter strip Receiver
strip 24 V DC
Stability Control
0 V
C/Q
HQ1
HQ2
HQ3
Teach-In
24 V
Range
0 V
Test
Test
RangeRange
Menu buttonOK button
1
2
3
4
5
6
7
8
1
2
3
4