Beckhoff TwinSAFE EL1918 Operating Instructions Manual
Terminal with 8 digital fail-safe inputs
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Summary of Contents for Beckhoff TwinSAFE EL1918
- Page 1 Operating Instructions | EN EL1918 and EL1918-2200 TwinSAFE Terminal with 8 digital fail-safe inputs 2024-12-18 | Version: 3.0.0...
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Page 3: Table Of Contents
Table of contents Table of contents 1 Notes on the documentation........................ 5 Disclaimer............................ 5 1.1.1 Trademarks ........................ 5 1.1.2 Patents .......................... 5 1.1.3 Limitation of liability ...................... 6 1.1.4 Copyright.......................... 6 Version numbers of the documentation .................... 7 Version history of the TwinSAFE product .................. 8 References ............................ - Page 4 Table of contents Electrical installation........................ 37 6.3.1 Overvoltage protection ..................... 37 6.3.2 Connection ........................ 37 6.3.3 Connecting ........................ 38 6.3.4 Connections ........................ 40 6.3.5 Signal lines........................ 43 7 Operation .............................. 44 Environmental conditions ........................ 44 Configuration of the terminal in TwinCAT .................. 45 7.2.1 Inserting a Bus Coupler....................
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Page 5: Notes On The Documentation
Notes on the documentation Disclaimer Beckhoff products are subject to continuous further development. We reserve the right to revise the operating instructions at any time and without prior announcement. No claims for the modification of products that have already been supplied may be made on the basis of the data, diagrams and descriptions in these operating instructions. -
Page 6: Limitation Of Liability
Modifications and changes to the hardware and/or software configuration that go beyond the documented options are prohibited and nullify the liability of Beckhoff Automation GmbH & Co. KG. The following is excluded from the liability: •... -
Page 7: Version Numbers Of The Documentation
Notes on the documentation Version numbers of the documentation Version Comment 3.0.0 • Appendix extended with links to certificates and declarations of conformity • New chapters “Laser image” and “Notes on information security” added • In chapter “EL1918 and EL1918-2200” IEC 61511 added •... -
Page 8: Version History Of The Twinsafe Product
Product features Only the product properties specified in the current operating instructions are valid. Further information given on the product pages of the Beckhoff homepage, in emails or in other publications is not authoritative. Version history of the TwinSAFE product This version history lists the software and hardware version numbers. -
Page 9: References
Notes on the documentation References Version Description Not used. Not used. 1.4.1 or newer Operating Manual for EL6910 TwinSAFE Logic Module The document contains a description of the logic functions of the EL6910 and its programming. 3.1.0 or newer Dokumentation TwinSAFE-Logic-FB The document describes the safety-related function blocks that are available in the EL6910 and thus also in the TwinSAFE card and form the safety-related application. -
Page 10: Staff Qualification
Notes on the documentation Staff qualification These operating instructions are intended exclusively for trained specialists in control technology and automation with the relevant knowledge. The trained specialist personnel must ensure that the applications and use of the described product meet all safety requirements. -
Page 11: Safety And Instruction
Notes on the documentation Safety and instruction Read the contents that refer to the activities you have to perform with the product. Always read the chapter For your safety [} 14] in the operating instructions. Observe the warnings in the chapters so that you can handle and work with the product as intended and safely. -
Page 12: Support And Service
Please contact your Beckhoff branch office or representative for local support and service on Beckhoff products! The addresses of Beckhoff's branch offices and representatives round the world can be found on our internet page: www.beckhoff.com You will also find further documentation for Beckhoff components there. -
Page 13: Notes On Information Security
Notes on the documentation Notes on information security The products of Beckhoff Automation GmbH & Co. KG (Beckhoff), insofar as they can be accessed online, are equipped with security functions that support the secure operation of plants, systems, machines and networks. -
Page 14: For Your Safety
• ISO 13849-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design Beckhoff is not responsible for the safe operation of the system. No disposal in domestic waste Products marked with a crossed-out waste bin must not be disposed of with domestic waste. -
Page 15: Safety Image Signs
For your safety Safety image signs Beckhoff products feature safety pictograms, either on stickers or printed, which vary depending on the product. They serve to protect people and to prevent damage to the products. Safety pictograms may not be removed and must be legible for the user. -
Page 16: General Safety Instructions
Engineering tools allowed are TE9000 - TwinCAT 3 Safety Editor and TE9200 - TwinSAFE Loader. Use only the latest versions of the engineering tools. You will find this on the Beckhoff website. Procedures or engineering tools that deviate from this are not covered by the certificate. This is especially true for externally generated xml files for the TwinSAFE import. -
Page 17: During Operation
For your safety 2.3.2 During operation Interference due to emitted interference Do not operate the following devices in the vicinity of the TwinSAFE component: for example, radio telephones, radios, transmitters or high-frequency systems. TwinSAFE components comply with the requirements of the applicable electromagnetic compatibility standards with regard to interference emission and immunity. - Page 18 For your safety A global shutdown temporarily disables the TwinSAFE component. You can reset the error by switching off and on again. For further information, refer to the chapter Diagnosis [} 55]. Observe lifetime Observe the lifetime of the TwinSAFE component. The lifetime is 20 years. Observe the safe state of the application The safe state of the application must be the de-energized state (quiescent current principle).
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Page 19: Product Overview
Product overview Product overview EL1918 and EL1918-2200 The EL1918 is a digital input terminal for sensors with potential-free contacts for 24 V . The TwinSAFE Terminal has 8 fail-safe inputs. With a two-channel connection, the EL1918 meets the requirements of IEC 61508:2010 SIL 3, EN ISO 13849-1:2023 (Cat 4, PL e) and IEC 61511 (SIL 3). -
Page 20: Block Diagram
Product overview Block diagram The block diagram describes the internal structure of the TwinSAFE component. The EL1918 TwinSAFE Terminal has an internal two-channel design based on a 1oo2 structure. EL1918 24 V µC1 EtherCAT ASIC µC2 Version: 3.0.0 EL1918 and EL1918-2200... -
Page 21: Laser Image
Product overview Laser image Item number Explanation UL mark of conformity Labeling of products that must not be disposed of with household waste in accordance with Directive 2012/19/EU EX conformity mark for ATEX with certificate number and temperature specification RoHS mark of conformity Product label “Read operating instructions”, website TÜV-SÜD NRTL mark of conformity TÜV-SÜD test mark for functional safety... -
Page 22: Intended Use
The functions allow the Beckhoff TwinSAFE components to be used in the field of machine safety and as safety devices for the process industry. The intended field of application for TwinSAFE components is safety functions on machines and process control technology in accordance with EN 61511 and the directly associated tasks in industrial automation. -
Page 23: Technical Data
Technical data Technical data Product data The current certificates of all TwinSAFE products with the underlying standards and directives can be found at https://www.beckhoff.com/en-en/support/download-finder/certificates-approvals/. Electrical data of the EL1918 and EL1918-2200 Explanation Electrotechnical data • Supply voltage 24 VDC (- 15 % / + 20 %) According to IEC 61508-1:2010. -
Page 24: Target Failure Measures
Technical data Software data of the EL1918 and EL1918-2200 Explanation • Response time in operation Typically 4 ms read input/write to E-bus maximum see fault reaction time • Fault reaction time Adjustable ≤ watchdog time Process image • Input 7 byte For more information, see the chapter Process image of the EL1918 [} 50]. -
Page 25: Environmental Conditions
Technical data Environmental conditions Beckhoff products are designed for operation under certain environmental conditions, which vary according to the product. The following specifications must be observed for operation and environment in order to achieve the optimum service life of the products as well as to ensure product safety. - Page 26 Technical data Permissible requirements for the environment Explanation Tested according to IEC 60068-2-1:2007, IEC 60068-2-2:2007 and IEC 60068-2-14:2009. The measuring device has a tolerance range of ± 3 °C for the minimum temperature and ± 2 °C for the maximum temperature. • during operation -30 °C to +55 °C For altitudes above 2000 m, the derating factors in the following table apply.
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Page 27: Dimensions
Technical data Dimensions Fig. 2: EL1918 dimensions Width: 12 mm (side-by-side installation) Height: 100 mm Depth: 68 mm Safe input The safe inputs and associated clock outputs are implemented as a single channel for each module. This has the advantage that any channels, e.g. for a two-channel safe sensor, can be combined and used. For error evaluation of these two channels, the Module Fault Link active parameter of the two modules involved must be set to TRUE. -
Page 28: Characteristic Curve Of The Inputs
Technical data Characteristic curve of the inputs The characteristic curve of the inputs is similar to type 3 according to EN 61131-2. Fig. 3: Characteristic curve of the inputs Version: 3.0.0 EL1918 and EL1918-2200... -
Page 29: Lifetime
Technical data Lifetime TwinSAFE components have a lifetime of 20 years, during which the target failure measures are guaranteed. For more information, see chapter Target failure measures [} 24]. The lifetime starts from the date of manufacture according to the Date Code. WARNING Replace TwinSAFE component after 20 years After a lifetime of 20 years, the target failure measures are no longer guaranteed. -
Page 30: Transport And Storage
The TwinSAFE components can be stored for shorter or longer periods. Observe the conditions specified in chapter Environmental conditions. Check the seal for damage Check the barcode sticker used to seal the outer packaging for damage. If the sticker is missing, opened or damaged, contact Beckhoff Support and Service. Version: 3.0.0 EL1918 and EL1918-2200... -
Page 31: Installation
Installation Installation Safety instructions Before installing and commissioning the TwinSAFE components read the safety instructions in this documentation. Mechanical installation WARNING Only work in a de-energized state The bus terminal system is under tension. Bring the bus terminal system into a safe, de-energized state before starting installation, disassembly or wiring of the TwinSAFE component. -
Page 32: Installation Position
07 08 PE PE EL1904 BECKHOFF Fig. 6: Installation position • All figures in millimeters Mount the mounting rail horizontally for the prescribed installation position. The connection surfaces of the EL terminals or KL terminals must point to the front. This can be seen in the figure below. -
Page 33: Arrangement Instructions
EL1904 EL1904 EL1904 EL3102 EL1904 EL3102 EL1904 EL6900 EL1904 EL1104 EL9410 EL1904 EL1104 EL1904 EL2904 EL1904 EL1904 EL2008 EL1904 EL6900 BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF... -
Page 34: Fig. 8 Thermally Poor Arrangement
EL1904 EL1904 EL1904 EL3102 EL1904 EL3102 EL1104 EL1904 EL1904 EL1104 EL9410 EL6900 EL1904 EL1904 EL2904 EL1904 EL1904 EL2008 EL1904 EL2008 BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF BECKHOFF... -
Page 35: Temperature Measurement
Installation 6.2.4 Temperature measurement The temperature measurement consists of an EK1100 EtherCAT Coupler, to which EtherCAT Terminals are attached, based on the typical distribution of digital and analog signal types at a machine. On the EL6910 a safety project is active, which reads safe inputs and enables safe outputs during the measurement. NOTICE External heat sources / radiant heat / impaired convection The maximum permissible ambient temperature of 55°C was checked with the example configuration... - Page 36 Installation 1. Plug the EtherCAT Coupler [2] onto the mounting rail [1] 2. Push the TwinSAFE Terminal [3] together with the adjacent component with tongue and groove Version: 3.0.0 EL1918 and EL1918-2200...
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Page 37: Electrical Installation
Installation 3. Push the TwinSAFE Terminal [3] against the mounting rail [1] until the locking mechanism audibly engages on the mounting rail Electrical installation 6.3.1 Overvoltage protection Provide a surge filter against overvoltage for the supply voltage of the bus terminal block and the TwinSAFE components if protection against overvoltage is required in your system. -
Page 38: Connecting
Installation Terminal point Input Signal Input 1- (safe input) Input 3+ (clock output) Input 3- (safe input) Input 5+ (clock output) Input 5- (safe input) Input 7+ (clock output) Input 7- (safe input) Input 2+ (clock output) Input 2- (safe input) Input 4+ (clock output) Input 4- (safe input) Input 6+ (clock output) - Page 39 Installation 1. Push the screwdriver [2] straight into the square opening above the terminal point of the terminal [1] as far as it will Do not turn, move back and forth or lever the screwdriver. The terminal point opens. 2. Keep screwdriver [2] pressed 3.
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Page 40: Connections
Installation 4. Pull the screwdriver [2] out of the opening The terminal [1] closes automatically when the pressure is released. The wire [3] is held securely and permanently. The permissible conductor cross-section can be found in the technical data. 6.3.4 Connections The electrical connections between the TwinSAFE components are realized automatically by plugging the components together. - Page 41 Installation 6.3.4.1.1 E-bus cables Input side +5VDC supply voltage of the E-bus 0 VDC ground of the E-bus supply voltage Receive line RX + Receive line RX - Transmission line TX + Transmission line TX - Output side +5VDC supply voltage of the E-bus 0 VDC ground of the E-bus supply voltage Transmission line TX + Transmission line TX -...
- Page 42 Installation 6.3.4.2 Power contacts Note the connection of the power contacts During the design of a bus terminal block, note the contact assignments of the individual TwinSAFE components, as some components do not loop through the power contacts or do not loop them through completely.
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Page 43: Signal Lines
Installation 6.3.5 Signal lines NOTICE Route the signal line separately Route the signal line separately from potential sources of interference. Possible sources of interference are, for example, motor supply cables or power cables with 230 V . Keep the distance between the cables as large as possible. -
Page 44: Operation
Operation Operation Environmental conditions Ensure that the TwinSAFE components are only transported, stored and operated under the specified conditions according to the Technical Data. WARNING Risk of injury! The TwinSAFE components must not be used under the following operating conditions. •... -
Page 45: Configuration Of The Terminal In Twincat
See TwinCAT automation software documentation. 7.2.3 Adding an EL1918 An EL1918 is added in exactly the same way as any other Beckhoff EtherCAT Terminal. Open TwinSAFE Terminals item in the list and select the EL1918. Fig. 10: Adding an EL1918 EL1918 and EL1918-2200... -
Page 46: Fig. 11 Address Settings On Twinsafe Terminals With 1023 Possible Addresses
Operation 7.2.4 Address settings on TwinSAFE terminals with 1023 possible addresses Fig. 11: Address settings on TwinSAFE terminals with 1023 possible addresses You must set the TwinSAFE address using the 10-way DIP switch [1] on the left-hand side of a TwinSAFE terminal. -
Page 47: Alias Devices
Operation 7.2.5 Alias devices The communication between the safety logic and the I/O level is realized via an alias level. At this alias level (sub-node Alias Devices) corresponding alias devices are created for all safe inputs and outputs, and also for standard signal types. -
Page 48: El1918 Parameters In Twincat
Operation Fig. 13: Creating alias devices by the user 7.2.6 EL1918 parameters in TwinCAT After creating the alias device, it can be parameterized according to the user specifications. The FSoE address is set under the Linking tab, and the link to the physical device is created. Fig. 14: Linking tab of the alias device Version: 3.0.0 EL1918 and EL1918-2200... -
Page 49: Fig. 15 Connection Tab Of The Alias Device
Operation Under the Connection tab you can make further settings, e.g. the mapping of the info data or the behavior in case of a module error. Fig. 15: Connection tab of the alias device The Safety Parameters tab contains the parameters of the EL1918 to be set. The parameters are set separately for each input. -
Page 50: Process Image Of The El1918
Operation Index Name Default value/ Description unit 80x0:04 Diag TestPulse active TRUE / Boolean Activation of test pulses for the corresponding input module 80x0:05 Module Fault Link active TRUE / Boolean If a module error occurs in this module, a module error is also set for all other modules of this TwinSAFE component for which this parameter is also set to TRUE. -
Page 51: El1918: Using The Integrated Twinsafe Logic Functions
Operation Name Process Bit position Description image FSIN Module4.Input Safe input 4 FSIN Module4.Module Fault Module error information for input 4 FSIN Module5.Input Safe input 5 FSIN Module5.Module Fault Module error information for input 5 FSIN Module6.Input Safe input 6 FSIN Module6.Module Fault Module error information for input 6 FSIN Module7.Input... -
Page 52: Twinsafe Reaction Times
Operation NOTICE Execution time of the logic function The execution time of the logic program - with identical logic program - will typically be longer compared to the EL6910, since the safe I/O signals must be processed additionally. This also has a corresponding effect on the processing of the I/O signals, since with increasing project size these can only be evaluated with a lower frequency. -
Page 53: Worst Case Response Time
Operation Definition Description RTInput Response time of the safe input, e.g. EL1904 or EP1908. This time can be found in the technical data. In the case of the EL1904 it is 4 ms. RTComm Response time of the communication. This is typically 3 times the EtherCAT cycle time, since a new Safety-over-EtherCAT telegram has to be generated before new data can be sent. - Page 54 Operation ReactionTime Version: 3.0.0 EL1918 and EL1918-2200...
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Page 55: Diagnosis
Diagnosis Diagnosis LEDs This chapter describes the functions of LEDs. The LEDs are divided into status LEDs and diagnostic LEDs. The following chapters contain a description of the individual LEDs. 8.1.1 Status LEDs This section contains information about the meaning of the different status LEDs. The LEDs “Input1”... -
Page 56: Diag Leds
Diagnosis 8.1.2 Diag LEDs The diagnostic LEDs show different operating modes of the TwinSAFE component. Diag1 Diag2 Diag3 Diag4 Fig. 22: Diag LEDs Diag1 Diag2 Diag3 Diag4 Description The device has no power supply. lights The ambient conditions, operating voltage and internal tests are within the valid range. -
Page 57: Logic Error Codes
Diagnosis 8.1.3 Logic error codes • The error codes refer to the LED Diag2. • LED Diag1 is on. Flash code Description Function block error in one of the TwinSAFE groups Communication error in one of the TwinSAFE groups Error combination: Function block and communication General error in one of the TwinSAFE groups Error combination: General and function block Error combination: General and communication... - Page 58 Diagnosis Both the control entries and the history itself can be found in the CoE object 0x10F3. The entry Newest Message (0x10F3:02) contains the subindex of 0x10F3, which contains the latest diagnostic message, e.g. 0x06 for diagnostic message 1. Index 10F3 Diagnosis History Index (hex) Name Meaning...
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Page 59: Fig. 23 Esi/Xml Message Text
Diagnosis Dynamic parameters in the diagnostic messages Type Data type Description Flags parameter 1 UINT16 Describes the type of parameter 1 Bits 12 to 15 = Bits 0 to 11 = data type of parameter 1 0x0001 - BOOLEAN 0x0002 - INT8 0x0003 - INT16 0x0004 - INT32 0x0005 - UINT8... -
Page 60: Diag History Tab
Diagnosis Diag History tab All errors occurring within the TwinSAFE components are stored in their diag history. The diag history can be viewed by selecting the corresponding TwinSAFE component in the I/O tree structure and then selecting the Diag History tab. Use the Update History button to fetch the current data from the TwinSAFE component. Errors within the logic, the function blocks, the connections or the component itself are stored with a corresponding time stamp. - Page 61 Diagnosis Setting Description Emergency In addition to saving the message in the diag history, an emergency object is also sent and displayed in the TwinCAT logger window. Overwrite / Acknowledge Mode This setting is currently not supported. EL1918 and EL1918-2200 Version: 3.0.0...
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Page 62: Maintenance And Cleaning
Maintenance and cleaning Maintenance and cleaning Cleaning by the manufacturer only Do not operate the TwinSAFE component if it is unacceptably dirty. Refer to the technical data for the protection class. Send unacceptably dirty TwinSAFE component to the manufacturer for cleaning. TwinSAFE components are basically maintenance-free. - Page 63 Maintenance and cleaning 3. Pull the TwinSAFE component [1] out of the bus terminal block from the mounting rail [3] with little effort EL1918 and EL1918-2200 Version: 3.0.0...
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Page 64: 10 Decommissioning
In accordance with the WEEE-2012/19/EU directives, you can return used devices and accessories for professional disposal. The transport costs are borne by the sender. Send the used devices with the note "For disposal" to: Beckhoff Automation GmbH & Co. KG Gebäude „Service“ Stahlstraße 31... -
Page 65: 11 Appendix
Appendix 11 Appendix 11.1 Volatility If there are requirements concerning the volatility of products in your application, for example of the U.S. Department of Defense or similar authorities or security organizations, the following process applies: The product has both volatile and non-volatile components. Volatile components lose their data immediately after removing power. -
Page 66: Focus Of Certificates
The current certificates of all TwinSAFE components with the underlying standards and directives can be found at https://www.beckhoff.com/en-en/support/download-finder/certificates-approvals/. If the document refers only to the first four figures of a product (ELxxxx), the certificate is valid for all available variants of the component (ELxxxx-abcd). -
Page 67: List Of Figures
List of figures List of figures Fig. 1 EL1918 – TwinSAFE Terminal with 8 fail-safe inputs ..............Fig. 2 EL1918 dimensions........................Fig. 3 Characteristic curve of the inputs....................Fig. 4 Serial number and Date Code...................... Fig. 5 Spring contacts ..........................Fig. - Page 69 More Information: www.beckhoff.com/EL1918 Beckhoff Automation GmbH & Co. KG Hülshorstweg 20 33415 Verl Germany Phone: +49 5246 9630 info@beckhoff.com www.beckhoff.com...
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