Siemens SITRANS L Series User manual

Edition 02/2021
Operating Instructions
SITRANS L
Capacitance Transmitters
SITRANS LCS050
https://www.siemens.com

SITRANS L
Capacitance Transmitters
SITRANS LCS050
Operating Instructions
Preface
Introduction 1
Safety notes 2
Description 3
Installing/mounting 4
Connecting 5
Setup 6
Diagnostics and
troubleshooting 7
Service and maintenance 8
Certificates and approvals 9
Technical data and
dimensions 10
02/2021
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Legal Information
Warning Notice System
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety
alert symbol, notices referring only to property damage have no safety alert symbol. These notices shown
below are graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger
will be used. A notice warning of injury to persons with a safety alert symbol may also include a warning
relating to property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the
specific task in accordance with the relevant documentation, in particular its warning notices and safety
instructions. Qualified personnel are those who, based on their training and experience, are capable of
identifying risks and avoiding potential hazards when working with these products/systems.
Proper Use of Siemens Products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant
technical documentation. If products and components from other manufacturers are used, these must be
recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning,
operation and maintenance are required to ensure that the products operate safely and without any
problems. The permissible ambient conditions must be complied with. The information in the relevant
documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this
publication may be trademarks whose use by third parties for their own purposes could violate the rights of
the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Siemens AG
Digital Industry
Process Automation
Postfach 48 48
90026 NÜRNBERG
GERMANY
© 02/2021 Subject to Change Copyright © Siemens 2021
All rights reserved

Table of Contents
Preface ............................................................................................................................................ v
1 Introduction ........................................................................................................................... 1
1.1 Function ................................................................................................................ 1
1.2 Target group ......................................................................................................... 1
1.3 Symbols used ........................................................................................................ 1
2 Safety notes .......................................................................................................................... 3
2.1 Authorised personnel ............................................................................................ 3
2.2 Appropriate use .................................................................................................... 3
2.3 Warning about incorrect use ................................................................................. 3
2.4 General safety instructions .................................................................................... 3
2.5 Installation and operation in the USA and Canada ................................................. 4
3 Description ............................................................................................................................ 5
3.1 Configuration ........................................................................................................ 5
3.2 Principle of operation ............................................................................................ 6
3.3 Packaging, transport and storage .......................................................................... 7
3.4 Accessories ............................................................................................................ 8
4 Installing/mounting ............................................................................................................... 9
4.1 General instructions .............................................................................................. 9
4.2 Mounting instructions ......................................................................................... 11
5 Connecting .......................................................................................................................... 13
5.1 Preparing the connection .................................................................................... 13
5.2 Connecting .......................................................................................................... 14
5.3 Wiring plan ......................................................................................................... 14
5.4 Switch-on phase .................................................................................................. 15
6 Setup ................................................................................................................................... 17
6.1 Indication of the switching status ........................................................................ 17
6.2 Function table ..................................................................................................... 17
7 Diagnostics and troubleshooting ........................................................................................ 19
7.1 Maintenance ....................................................................................................... 19
7.2 Rectify faults ....................................................................................................... 19
7.3 Diagnosis, fault messages ................................................................................... 20
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Table of Contents
7.4 Return procedure ................................................................................................ 20
7.5 How to proceed if a repair is necessary ............................................................... 21
8 Service and maintenance .................................................................................................... 23
8.1 Dismounting steps .............................................................................................. 23
8.2 Disposal .............................................................................................................. 23
9 Certificates and approvals .................................................................................................. 25
9.1 Food and pharmaceutical certificates ................................................................... 25
9.2 EU conformity ..................................................................................................... 25
9.3 Environment management system ...................................................................... 25
10 Technical data and dimensions .......................................................................................... 27
10.1 Technical data ..................................................................................................... 27
10.2 Device communication IO-Link ............................................................................ 30
10.3 Dimensions ......................................................................................................... 34
10.4 Licensing information for open source software .................................................. 35
10.5 Trademark ........................................................................................................... 35
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Preface
Editing status: 2021-02-24
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Preface
vi SITRANS LCS050
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Introduction 1
1.1 Function
This instruction provides all the information you need for mounting, connection
and setup as well as important instructions for maintenance, fault rectification,
the exchange of parts and the safety of the user. Please read this information
before putting the transmitter into operation and keep this manual accessible in the
immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained personnel. The contents of
this manual must be made available to the qualified personnel and implemented.
1.3 Symbols used
Information, note, tip: This symbol indicates helpful additional
information and tips for successful work.
Note: This symbol indicates notes to prevent failures,
malfunctions, damage to devices or plants.
Caution: Non-observance of the information marked with this
symbol may result in personal injury.
Warning: Non-observance of the information marked with this
symbol may result in serious or fatal personal injury.
Danger: Non-observance of the information marked with this
symbol results in serious or fatal personal injury.
Ex applications
This symbol indicates special instructions for Ex applications.
• List
The dot set in front indicates a list with no implied sequence.
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Introduction
1.3Symbols used
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of
batteries and accumulators.
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Safety notes 2
2.1 Authorised personnel
All operations described in this documentation must be carried out only by trained,
qualified personnel authorised by the plant operator.
During work on and with the device, the required personal protective equipment
must always be worn.
2.2 Appropriate use
The SITRANS LCS050 is a transmitter for point level detection.
You can find detailed information about the area of application in chapter " Product
description".
Operational reliability is ensured only if the transmitter is properly used according
to the specifications in the operating instructions manual as well as possible
supplementary instructions.
2.3 Warning about incorrect use
Inappropriate or incorrect use of this product can give rise to application-specific
hazards, e.g. vessel overfill through incorrect mounting or adjustment. Damage to
property and persons or environmental contamination can result. Also, the protective
characteristics of the transmitter can be impaired.
2.4 General safety instructions
This is a state-of-the-art transmitter complying with all prevailing regulations and
directives. The transmitter must only be operated in a technically flawless and
reliable condition. The operator is responsible for the trouble-free operation of
the transmitter. When measuring aggressive or corrosive media that can cause a
dangerous situation if the transmitter malfunctions, the operator has to implement
suitable measures to make sure the transmitter is functioning properly.
The safety instructions in this operating instructions manual, the national installation
standards as well as the valid safety regulations and accident prevention rules must
be observed by the user.
For safety and warranty reasons, any invasive work on the device beyond that
described in the operating instructions manual may be carried out only by personnel
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Safety notes
2.5Installation and operation in the USA and Canada
authorised by the manufacturer. Arbitrary conversions or modifications are explicitly
forbidden. For safety reasons, only the accessory specified by the manufacturer must
be used.
To avoid any danger, the safety approval markings and safety tips on the device must
also be observed.
2.5 Installation and operation in the USA and Canada
This information is only valid for USA and Canada. Hence the following text is only
available in the English language.
Installations in the US shall comply with the relevant requirements of the National
Electrical Code (ANSI/NFPA70).
Installations in Canada shall comply with the relevant requirements of the Canadian
Electrical Code
A Class 2 power supply unit has to be used for the installation in the USA and
Canada.
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Description 3
3.1 Configuration
Scope of delivery
The scope of delivery encompasses:
• SITRANS LCS050 point level switch
• Information sheet " Documents and software" with:
• Transmitter serial number
Note
Optional transmitter features are also described in this operating instructions
manual. The respective scope of delivery results from the order specification.
Scope of this operating instructions
This operating instructions manual applies to the following transmitter versions:
• Hardware version from 1.0.0
• Software version from 1.2.0
Constituent parts
The SITRANS LCS050 consists of the components:
• Housing with integrated electronics
• Process fitting
• Plug
1 Plug connection
2 360° status indication
3 Transmitter housing
4 Process fitting
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Description
3.2Principle of operation
5 Transmitter
Figure3.1 SITRANS LCS050
Nameplate
You will find the type plate on the transmitter housing.
The nameplate contains the most important data for identification and use of the
transmitter.
1 Product name
2 Order number
3 Serial number
4 Voltage supply and signal output
5 Protection rating
6 Permissible process pressure
7 Material wetted parts
8 QR code for device documentation
9 Fabrication year
10 Approvals
Figure3.2 Layout of the nameplate (example)
Documents and software
Further information can be found on our homepage.
There you will find the documentation and further information about the device.
3.2 Principle of operation
Application area
The SITRANS LCS050 is a capacitive point level transmitter for point level detection
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Description
3.3Packaging, transport and storage
It is designed for industrial use in all areas of process technology and can be used in
water-based liquids.
Typical applications are overfill and dry run protection. With a the small transmitter
unit, SITRANS LCS050 can be also mounted e.g. in thin pipelines. The transmitter
allows use in vessels, tanks and pipes. Thanks to its simple and robust measuring
system, SITRANS LCS050 is virtually unaffected by the chemical and physical
properties of the medium.
It functions even under difficult conditions such as turbulence, air bubbles, buildup,
strong external vibration or changing products.
If a malfunction is detected or in case of voltage supply, the electronics takes on a
defined switching status, i.e. the output is open (safe state).
Functional principle
An alternating electric field is generated at the tip of the measuring electrode. If the
transmitter is covered with medium, the resonance frequency changes. This change
is detected by the electronics and converted into a switching command.
Buildup is ignored to a certain degree and therefore has no influence on the
measurement.
3.3 Packaging, transport and storage
Packaging
Your transmitter was protected by packaging during transport. Its capacity to handle
normal loads during transport is assured by a test based on ISO4180.
The packaging consists of environment-friendly, recyclable cardboard. For special
versions, PE foam or PE foil is also used. Dispose of the packaging material via
specialised recycling companies.
Transport
Transport must be carried out in due consideration of the notes on the transport
packaging. Nonobservance of these instructions can cause damage to the device.
Transport inspection
The delivery must be checked for completeness and possible transit damage
immediately at receipt. Ascertained transit damage or concealed defects must be
appropriately dealt with.
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Description
3.4Accessories
Storage
Up to the time of installation, the packages must be left closed and stored according
to the orientation and storage markings on the outside.
Unless otherwise indicated, the packages must be stored only under the following
conditions:
• Not in the open
• Dry and dust free
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
Storage and transport temperature
• Storage and transport temperature see chapter " Supplement - Technical data -
Ambient conditions"
• Relative humidity 20…85%
3.4 Accessories
The instructions for the listed accessories can be found in the download area on our
homepage.
Threaded and hygienic nozzle
Various threaded and hygienic nozzles are available for devices with threaded
version.
You can find further information in the "Technical data"
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Installing/mounting 4
4.1 General instructions
Ambient conditions
The transmitter is suitable for standard and extended ambient conditions acc. to DIN/
EN/IEC/ANSI/ISA/UL/CSA61010-1. It can be used indoors as well as outdoors.
Process conditions
Note
For safety reasons, the transmitter must only be operated within the permissible
process conditions. You can find detailed information on the process conditions in
chapter " Technical data" of the operating instructions or on the nameplate.
Hence make sure before mounting that all parts of the transmitter exposed to the
process are suitable for the existing process conditions.
These are mainly:
• Active measuring component
• Process fitting
• Process seal
Process conditions in particular are:
• Process pressure
• Process temperature
• Chemical properties of the medium
• Abrasion and mechanical influences
Switching point
The SITRANS LCS050 can be mounted in any position. The transmitter must be
mounted in such a way that the transmitter is at the height of the requested
switching point.
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Installing/mounting
4.1General instructions
1 Upper level detection (max.) as overflow protection
2 Lower level detection (min.) as dry run protection
3 Dry run protection (min.) for a pump
Figure4.1 Installation examples
Note that the switching point varies depending on the type of medium and the
mounting position of the transmitter.
Protection against moisture
Protect your transmitter against moisture ingress through the following measures:
• Firmly tighten the plug connector
• Lead the connection cable downwards in front of the plug connector
This applies mainly to outdoor installations, in areas where high humidity is expected
(e.g. through cleaning processes) and on cooled or heated vessels.
Handling
The level switch is a measuring device for stationary screw mounting and must be
treated accordingly. Damage to the measuring tip will destroy the transmitter.
Use the hexagon above the thread for screwing in.
After mounting, make sure that the process fitting is screwed in correctly and thus
securely seals even at maximum process pressure.
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Installing/mounting
4.2Mounting instructions
4.2 Mounting instructions
Adhesive products
In adhesive and viscous media, the surfaces of the transmitter should protrude into
the vessel to avoid buildup. Therefore mounting bosses should not exceed a certain
length.
Figure4.2 Adhesive products
In horizontal pipelines, avoid mounting in the upper or lower area of the pipe.
In the upper part of the pipe cavities can form due to air inclusions.
Solids can settle in the lower pipe area. Both can lead to measurement errors.
In horizontal pipelines, lateral installation is therefore recommended.
1 Recommended mounting area
2 Not recommended - danger of air inclusions
3 Not recommended - Danger of buildup
Figure4.3 Installation in horizontal pipelines
Inflowing medium
If SITRANS LCS050 is mounted in the filling stream, unwanted false measurement
signals can be generated. For this reason, mount SITRANS LCS050 at a position in the
vessel where no disturbances, e.g. from filling openings, agitators, etc., can occur.
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Installing/mounting
4.2Mounting instructions
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Connecting 5
5.1 Preparing the connection
Safety instructions
Always keep in mind the following safety instructions:
• Carry out electrical connection by trained, qualified personnel authorised by the
plant operator
• If overvoltage surges are expected, overvoltage arresters should be installed
WARNING
Only connect or disconnect in de-energized state.
Voltage supply
The data for power supply are specified in chapter " Technical data".
Note
Power the transmitter via an energy-limited circuit (power max. 100W) acc. to
IEC61010-1, e.g.
• Class2 power supply unit (acc. to UL1310)
• SELV power supply unit (safety extra-low voltage) with suitable internal or
external limitation of the output current
Keep in mind the following additional factors that influence the operating voltage:
• Lower output voltage of the power supply unit under nominal load
• Influence of additional transmitters in the circuit (see load values in chapter "
Technical data")
Connection cable
The transmitter is connected with standard four-wire cable. If electromagnetic
interference is expected which is above the test values of EN61326-1 for industrial
areas, shielded cable should be used.
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