Pepperl+Fuchs LGM Series User manual

LGM Series
Measuring Automation
Light Grid
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 Industry, published
by the Central Association of the Electrical Industry (Zentralverband Elektrotechnik und Elek-
troindustrie (ZVEI) e.V.) in its most recent version as well as the supplementary clause:
"Expanded reservation of proprietorship"
Worldwide
Pepperl+Fuchs Group
Lilienthalstr. 200
68307 Mannheim
Germany
Phone: [phone] - 0
E-mail: [e-mail]
North American Headquarters
Pepperl+Fuchs Inc.
1600 Enterprise Parkway
Twinsburg, Ohio 44087
USA
Phone: [phone]
E-mail: [email protected]
Asia Headquarters
Pepperl+Fuchs Pte. Ltd.
P+F Building
18 Ayer Rajah Crescent
Singapore 139942
Phone: [phone]
E-mail: [email protected]l-fuchs.com
https://www.pepperl-fuchs.com

LGM Series
Contents
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1 Introduction................................................................................................................ 6
2 Declaration of conformity ......................................................................................... 7
2.1 Declaration of Conformity............................................................................. 7
2.2 IO-Link Manufacturer's Declaration ............................................................. 7
3 Safety .......................................................................................................................... 8
3.1 Symbols relevant to safety ........................................................................... 8
3.2 Intended Use .................................................................................................. 8
4 Product Description .................................................................................................. 9
4.1 Use and Application ...................................................................................... 9
4.2 Indicators and Control elements.................................................................. 9
4.3 Interfaces 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 ........................................................................................ 15
5.4 Connecting the Sensor Units ..................................................................... 16
5.5 Grounding/Shielding ................................................................................... 19
5.6 Storage and Transportation ........................................................................ 19
6 Commissioning........................................................................................................ 20
6.1 Final Assembly............................................................................................. 20
6.2 Commissioning the Light Grid ................................................................... 20
7 Operation.................................................................................................................. 21
7.1 Operating the Light Grid Using the Programming Interface ................... 21

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Contents
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7.2 Commissioning and Operating the Light Grid with IO-Link ....................25
7.2.1 Programmable Functions of the Light Grid ........................................................................ 25
7.2.2 Description of Individual Measurement Methods (Measured Value Modes)...................... 28
7.2.2.1 FBB = Lowest Object Position across All Partial Objects ....................................................... 28
7.2.2.2 LBB = Highest Object Position across All Partial Objects ...................................................... 29
7.2.2.3 NBB = Object Height across All Partial Objects..................................................................... 30
7.2.2.4 TBB = Object Height as the Total Height of All Partial Objects ............................................... 31
7.2.2.5 NCBB = Object Height of the Largest Contiguous Partial Object........................................... 32
7.2.2.6 CBB = Middle Object Position of the Largest Contiguous Partial Object................................ 33
7.2.2.7 CFBB = Lowest Object Position of the Largest Contiguous Partial Object ............................. 34
7.2.2.8 CLBB = Highest Object Position of the Largest Contiguous Partial Object ............................ 35
7.2.2.9 MBB = Middle Object Position across All Partial Objects....................................................... 36
7.2.2.10 FBM = Lowest Gap Position across All Partial Objects .......................................................... 37
7.2.2.11 LBM = Highest Gap Position across All Partial Objects ......................................................... 38
7.2.2.12 NBM = Gap Height within All Partial Objects ......................................................................... 40
7.2.2.13 TBM = Gap Height As the Total of All Empty Areas................................................................ 41
7.2.2.14 NCBM = Gap Height of the Largest Contiguous Empty Area................................................. 42
7.2.2.15 CBM = Middle Gap Position of the Largest Contiguous Empty Area...................................... 44
7.2.2.16 TRN = Number of Transitions from Interrupted to Vacant Beams........................................... 46
8 IO-Link Programming ..............................................................................................48
8.1 IO-Link Introduction.....................................................................................48
8.2 IO-Link Communication Parameters and ID Parameters .........................48
8.3 Process Data ................................................................................................49
8.4 IO-Link Parameters ......................................................................................50
8.4.1 Identification ..................................................................................................................... 50
8.4.2 Parameterization and Configuration.................................................................................. 52
8.4.3 Monitoring......................................................................................................................... 59
8.4.4 Diagnostic Function .......................................................................................................... 61
8.4.5 Events............................................................................................................................... 64
9 Maintenance and Repair .........................................................................................65
9.1 Maintenance .................................................................................................65
9.2 Repair............................................................................................................65
10 Troubleshooting .......................................................................................................66
10.1 Troubleshooting ...........................................................................................66
11 Appendix...................................................................................................................68
11.1 Process Data Structure ...............................................................................68
11.1.1 IO-Link Communication and ID Parameters ...................................................................... 68
11.1.2 IO-Link Predefined Parameters - Standard Index.............................................................. 69
11.1.3 IO-Link Device Parameters ............................................................................................... 70
11.1.4 Error Codes ...................................................................................................................... 76
11.1.5 Result Data ....................................................................................................................... 77
11.2 Technical Data ..............................................................................................77
11.3 Type code......................................................................................................79

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11.4 Switch-On Delay and Number of Beams ................................................... 80
11.5 Switching Frequencies and Time Delay before Availability..................... 84
11.6 Profile length and weight ............................................................................ 85
11.7 Accessories.................................................................................................. 86
11.7.1 Installation accessories .................................................................................................... 86
11.7.1.1 Mounting Aid OMH-SLCT-01 .................................................................................................87
11.7.1.2 Mounting Aid OMH-LGS-01...................................................................................................87
11.7.1.3 Alignment aid .........................................................................................................................88
11.7.2 Connecting Cables ........................................................................................................... 89
11.7.3 Accessories for IO-Link Operation .................................................................................... 89

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LGM Series
Introduction
1 Introduction
Congratulations
You have chosen a device manufactured by Pepperl+Fuchs. Pepperl+Fuchs develops, pro-
duces 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 pack-
age is complete.
Contact
If you have any questions about the device, its functions, or accessories, please contact us at:
Pepperl+Fuchs Group
Lilienthalstraße 200
68307 Mannheim, Germany
Telephone: [phone]
Fax: [phone]
Email: fa-inf[email protected].com
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.

LGM Series
Declaration of conformity
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2 Declaration of conformity
2.1 Declaration of Conformity
This product was developed and manufactured in line with the applicable European standards
and directives.
The product manufacturer, Pepperl+Fuchs Group, 68307 Mannheim, Germany, has a certified
quality assurance system that conforms to ISO 9001.
2.2 IO-Link Manufacturer's Declaration
The quality of the IO-Link and SDCI standard is guaranteed by a manufacturer's declaration.
You can view and download the manufacturer's declaration for the specific product at
http:\\www.pepperl-fuchs.com.
Note
A declaration of conformity can be requested from the manufacturer.
ISO9001

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LGM Series
Safety
3Safety
3.1 Symbols relevant to safety
3.2 Intended Use
The measuring LGM light grid consists of an emitter and receiver strip. Located between the
strips is the measuring range consisting of infrared light beams. When an object enters the
measurement field, one of several selectable measuring methods sends out data on the inter-
rupted beams via I/O-Link. The reading is in mm.
Application areas
■Warehousing and material handling, packaging industry
Always operate the device as described in these instructions to ensure that the device and con-
nected systems function correctly. The protection of operating personnel and plant is guaran-
teed only if the device is operated in accordance with its intended use.
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.
Installation and commissioning of all devices may be performed only by trained and qualified
personnel.
It is dangerous for the user to make changes and/or repairs. Additionally, doing so voids the
warranty and excludes the manufacturer from any liability. In the event of any serious errors,
stop using the device. Secure the device against unintended operation. To have the device
repaired, return it to your local Pepperl+Fuchs representative or your sales center.
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. It 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.
Note
Repairs
If the light grid requires repair, please send the emitter and receiver together to Pepperl+Fuchs.

LGM Series
Product Description
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4 Product Description
4.1 Use and Application
Features
■Object identification, object measurement, and positioning
■Detecting and counting irregular objects
■Measuring and sorting a wide variety of objects
■Object identification
Description
The measuring LGM light grid consists of an emitter and receiver strip. Located between the
strips is the measuring detection field consisting of infrared light beams.When an object enters
the detection field, one of 16 selectable measuring methods sends out data on the interrupted
beams via I/O-Link.
The LGM has a modular construction and is available with various resolutions and field heights
of up to 3200 mm, to allow proper measurement ranges. With its integrated signal evaluation, it
is not necessary to install a separate control interface unit.
The SC diagnostic output indicates if signal strength is insufficient due to misalignment or dirt.
Various objects can be taught-in on the receiver strip via two operating buttons (capacitive
touch buttons). External operation is also possible with Teach-in input.
4.2 Indicators and Control elements
Emitter unit
Figure 4.1 Function indicator on the emitter unit
Operation indicator and status indicator on the emitter
Receiver unit
Operation indicator: indicates power-on or power-save mode
Status indicator: indicates transmission power, fault state, or active test mode
Function Diagnostic description
Operation indicator (green LED)
Green LED on Power-on
Green LED off
Yellow LED flashing
Power-save mode
Status indicator (yellow LED)
Yellow LED off Power of emitter is low
Yellow LED is on Power of emitter is high
Yellow LED flashing Fault state
Yellow LED changes state Test mode is active
23
2
3

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LGM Series
Product Description
Figure 4.2 Function indicator on the receiver unit
Operation indicator and status indicator on the receiver
The control panel on the receiver unit consists of 12 indicator elements.The two outer two sym-
bols act as control elements (touch buttons). The receiver unit can be parametrized via menu
selection on the control panel (see chapter 7.1).
Figure 4.3 Controls on the Receiver unit
Operation indicator: indicates power-on, power-save mode, IO-Link mode aktive, or fault
state
Status indicator: indicates detection field status, functional reserve, or fault state
Function Diagnostic Description
Operation indicator (green LED)
Green LED permanently on Power-on
Green LED permanently off Power-save mode
Green LED flashes with short interruption Active IO-Link mode, receiver's operating
panel locked
Green LED flashes with 4 Hz Fault status: short circuit at the outputs
Status indicator (yellow LED)
Yellow LED permanently on Detection field interrupted
Yellow LED permanently off Detection field vacant
Yellow LED flashes (approx. 4 Hz) Insufficient functional reserve
Yellow LED flashes (approx. 8 Hz) Fault state: fault during signal measurement
23
Q
H1 H2 H3 F2
2
3
1
12
Q
H1
H2
H3 F2

LGM Series
Product Description
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Control elements
For a detailed description of the function status indicators, please see see chapter 7.1.
4.3 Interfaces and Connections
Use two M12 plugs for the electrical connection. The emitter unit has a cable with a 4-pin plug
and the receiver unit a cable with an 8-pin plug.
Emitter unit
Figure 4.4 Emitter unit connection layout
Receiver unit
Figure 4.5 Receiver unit connection layout
IO-Link communication is established via the C/Q (Pin 4) connection.
Number Symbol Parameter Description
Menu button Function selection
OK button Function confirmation
1
12
124 V DC
2Range (In)
30 V DC
4Test (In)
1+ UB
2SC (Stability Control, Out)
30 V DC
4C/Q (IO-Link / Out)
5Q (Out)
6not connected
7not connected
8Teach-In (In)
1
3
4
2
1
4
6
7
8
53
2

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LGM Series
Product Description
4.4 Accessories
An extensive range of accessories with detailed descriptions can be found in the appendix see
chapter 11.7.
4.5 Scope of Delivery
The scope of delivery includes:
■Emitter unit and receiver unit
■Quick start guide
■Cable lug and housing screw as spare part
Brackets 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 brackets and recom-
mended cables.

LGM Series
Installation
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5 Installation
5.1 Preparation
Unpacking the Device
1. Check the packaging and contents for damage.
In 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
Make sure the detection field is free from obstacles. The first and last beams within the detec-
tion field are used for optical synchronization of emitter and receiver units. If both beams are
blocked, synchronization is lost and the measurement is inhibited.The system is preconfigured
for operation wth cable outlet upwards. For installation with cable outlet downwards, the
receiver unit can be configured via IO-Link for the zero-point reference on the cable side.
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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LGM Series
Installation
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 ISO 4035).
Various brackets are available for mounting the light grid see chapter 11.7.1.
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 DIN 4035) fit into this groove.You can mount the light grid using these
inserted nuts.
Mounting Using Customized Bore Holes
You can mount the light grid using user-defined holes. The maximum screw size is M4. Make
sure to follow the instructions when positioning the hole. Improper handling can damage inter-
nal electronics.
Preparation
1. Mark the position of the holes. Focus on the lateral continuous line on the light grid .
2. Mark the position of the holes.
3. Using a 4.5 diameter drill, drill right through the housing.
4. Deburr the hole.
5. Repeat the first steps to drill all the holes.
6. Make sure that the aluminum chippings do not scratch the optical surface.
Secure the light grid in its final position with the holes you made.
Q
H1
Fix
H2 H3 Fn
Emitter unit
Detection field + 159
n Beam 1. Beam
Receiver unit
Detection field
5
21.2 137.8
20
30.5

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Installation
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Figure 5.2 Position the center point of the installation holes.
Figure 5.3 Installation holes
Installation
1. Align the emitter and receiver units so they are parallel to one another and at the same height.
2. The units must be aligned with an accuracy of approximately ±5°.
3. During installation, ensure that the two units are the same way up. (Both units with the cable
outlet either up or down).
4. Do not exceed the maximum range.
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.
9
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
If 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.

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LGM Series
Installation
Figure 5.5 Multiple assignment of two pairs of light grids
5.4 Connecting the Sensor Units
Connecting the Emitter unit
Connect the emitter unit as described in the section Interfaces and Connections (see chapter
4.3). Insulate unused wires. See circuit example on the following page.
E1 S1 S2 E2
Caution!
Electrical connection
Wiring work that requires the opening and closing of electrical connections must always be per-
formed with the power disconnected.
Use a Class 2 power supply to supply the power (certified according to UL 1310).
Connection Description
Range input
Pin 2
The emitter power can be adjusted for specific sensing ranges
according to application requirements. Reducing emitter
power is useful for avoiding optical interference with other sen-
sors.
Input open Max. 1.6 m
+UBMax. 6 m
0V Max. 6 m

LGM Series
Installation
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Connecting the Receiver unit
Connect the receiver unit as described in the section Interfaces and Connections (see chapter
4.3). All outputs are short-circuit proof. Insulate unused wires. See circuit example shown
below.
Te s t i n p u t
Pin 4
The emitter unit features a test input with two functionalities:
•test mode
•power safe mode
These functionalities can be activated by connection of the
test input to either +UBor 0 V. The functions are inactive if the
test pin is left open (high impedance).
Te s t m o d e : Activate the test input for max.
1.2 seconds. The emitter
beams are turned off. The
receiver unit will detect this the
same way as a beam interrup-
tion by an object.
Power save mode: Test input is active for more
than 1.2 seconds:
The emitter unit enters the
power save mode.The
receiver unit will change to
power save mode if optically
synchronized with the emitter.
The measurement is inhibited
in this mode and power con-
sumption is reduced to mini-
mum. Test input set to to
inactive:
Emitter and receiver units
resume to normal operation.
Note: The receiver unit as well
resumes to normal operation if
the optical synchronization is
lost.
Connection Description
Stability control (SC) output
Pin 2
The SC output gets active with a delay of
5 seconds, if the receiver unit detects signals
below stability control threshold (functional
reserve). The status indicator flashes at 4 Hz.
The SC output returns immediately to normal
operation (inactive state) with receiver signals
above the stability control threshold.
Connection Description

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LGM Series
Installation
Circuit Example
The LEDs on the outputs are optional.
Figure 5.6 Circuit example LGM
Switching output (C/Q)
Pin 4
This connection has 2 functions. (By default,
the switching output is active once the device
is powered on; SIO mode)
Switching output: This signal output is active
(active with dark ON, inactive with light ON) if
an object is detected or identified according to
parameter settings.This means that the out-
put is always active when status indicator 4
(Q) is on.
IO-Link interface: When the light grid is run-
ning in IO-Link mode, it communicates with
the master via this connection.
Remote control (Teach-in input)
Pin 8
The receiver unit features a Teach-in input.
This input can be used to remotely stimulate
the functions of the two control buttons:
•Menu button (input connected to +UB)
•OK button (input connected to 0 V)
(see circuit example below)
Note: The Teach-in input functionality can be
inhibited by connecting this terminal perma-
nently to +UB.
Connection Description
24 V
0 V
Test
Emitter unit Receiver
unit 24 V DC
Stability Control
0 V
C/Q
Q
n.c.
n.c.
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

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Installation
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5.5 Grounding/Shielding
Grounding/Shielding
The system does not require grounding in standard cases. If 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. It 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:
1. Make up a grounding cable (max. 1 mm2) using the supplied cable lug.
2. Remove one housing screw from the cover at the cable end, using a Torx T8 screwdriver.
3. Place the cable lug with the prepared cable under the cover and tighten the housing screw
again.
4. Connect the other end of the ground cable to adjacent metal components (e.g., mounting base,
frame, etc.).
The sensor is now grounded.
5.6 Storage and Transportation
Keep the original packaging. Always store and transport the device in the original packaging.
Store the device in a clean and dry environment. The permitted ambient conditions must be
considered, see datasheet.

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LGM Series
Commissioning
6 Commissioning
6.1 Final Assembly
Checking the Mounting and Settings
1. Check the position of the light strips in relation to one another. The emitter strip and receiv-
er strip must be aligned with one another with an accuracy of approximately ±5°.
2. The light strips can be operated briefly to check that the final assembly has been per-
formed correctly. The light strips are aligned perfectly with each other when the yellow sta-
tus LED on the receiver strip does not light up continuously or flash.
3. Now secure the light strips. Check all screw connections and tighten as necessary.
4. Check the cabling, referring to the wiring diagrams.
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. If both synchronous beams are interrupted, the detection field is no longer measured.
The signal needs to be calibrated to achieve the best possible resolution for the relevant appli-
cation. Therefore, after any modifications to the application (installation situation), start the sys-
tem to recalibrate the signal and maintain the same level of availability.
The signal output responds to detected objects, heavy soiling on the lenses, or misaligned pro-
files.The electronics compensate for signal changes caused by gradual soiling or temperature
changes. If a minimum of one light beam is interrupted, the output remains active until the light
beam is interrupted (with dark on) or soiling is detected.
6.2 Commissioning the Light Grid
1. Check that the power supply and signal lines to the light grid are connected correctly. When
using an IO-Link Master, make sure that the C/Q communication line is connected to the
corresponding port on the IO-Link master.
2. Check that the light grid is in the correct position and orientation.
3. Turn on the power supply.The green operation indicators on emitter and receiver units are on.
4. If the emitter and receiver units are aligned, the status indicator is off.The status indicator lights
up when the device is misaligned or an object is detected.
The two units are perfectly aligned and can now be configured .
For commissioning and operation of the light grid in IO-Link mode, please refer see chapter
7.2.