AS2000

Operating Manual | EN

EK1914
Blindtext Blindtext Blindtext
TwinSAFE Bus Coupler with 2 fail-safe inputs and 2 fail-safe outputs

2023-03-01 | Version: 2.0.0

 Table of contents

Table of contents
1 Notes on the documentation.................................................................................................................... 5
1.1 Disclaimer.......................................................................................................................................... 5
1.1.1 Trademarks ........................................................................................................................ 5
1.1.2 Patents ............................................................................................................................... 5
1.1.3 Limitation of liability ............................................................................................................ 6
1.1.4 Copyright............................................................................................................................ 6
1.2 Version numbers ............................................................................................................................... 7
1.3 Staff qualification ............................................................................................................................... 8
1.4 Safety and instruction........................................................................................................................ 9
1.4.1 Explanation of symbols ...................................................................................................... 9
1.5 Beckhoff Support and Service......................................................................................................... 10

2 For your safety ........................................................................................................................................ 11

2.1 Safety instructions ........................................................................................................................... 11
2.1.1 Before operation............................................................................................................... 11
2.1.2 In operation ...................................................................................................................... 11
2.1.3 After operation.................................................................................................................. 11

3 The Beckhoff EtherCAT Terminal system ............................................................................................ 12

3.1 EtherCAT Bus Coupler.................................................................................................................... 13
3.2 EtherCAT Terminals........................................................................................................................ 14
3.3 E-bus ............................................................................................................................................... 15
3.4 Power contacts................................................................................................................................ 15

4 System description TwinSAFE .............................................................................................................. 16

4.1 Extension of the Beckhoff I/O system with safety functions ............................................................ 16
4.2 Safety concept ................................................................................................................................ 16

5 Product description ................................................................................................................................ 17

5.1 General description ......................................................................................................................... 17
5.2 Intended use ................................................................................................................................... 18
5.3 Technical data ................................................................................................................................. 19
5.4 Safety parameters ........................................................................................................................... 21
5.5 Environmental conditions ................................................................................................................ 22
5.6 Dimensions ..................................................................................................................................... 23

6 Transport and storage ............................................................................................................................ 24

7 Installation .............................................................................................................................................. 25
7.1 Safety instructions ........................................................................................................................... 25
7.2 Transport / storage .......................................................................................................................... 25
7.3 Mechanical installation .................................................................................................................... 25
7.3.1 Control cabinet / terminal box .......................................................................................... 26
7.3.2 Installation position and minimum distances.................................................................... 26
7.3.3 Installation on mounting rails............................................................................................ 27
7.4 Electrical installation........................................................................................................................ 29
7.4.1 Connections within a Bus Terminal block ........................................................................ 29
7.4.2 Overvoltage protection ..................................................................................................... 30
7.4.3 HD housing wiring ............................................................................................................ 31

EK1914 Version: 2.0.0 3

Table of contents

7.4.4 High Density terminals ..................................................................................................... 32

7.4.5 Wire cross sections (HD) ................................................................................................. 32
7.4.6 Pin assignment................................................................................................................. 33
7.5 TwinSAFE reaction times ................................................................................................................ 39
7.5.1 Typical reaction time ........................................................................................................ 39
7.5.2 Worst-case reaction time ................................................................................................. 40
7.6 Tested devices ................................................................................................................................ 41

8 Configuration of the EK1914 in TwinCAT ............................................................................................. 42

8.1 Inserting a Beckhoff TwinSAFE Bus Coupler.................................................................................. 42
8.2 Address settings on the EK1914 TwinSAFE Bus Coupler .............................................................. 43
8.3 Entering a TwinSAFE address and parameters in the System Manager ........................................ 44
8.3.1 Configuration of the EK1914 for light barriers, light grids, light curtains, etc.................... 47
8.3.2 Configuration of the EK1914 for safety switching mats.................................................... 48

9 Diagnosis ................................................................................................................................................. 49
9.1 Diagnosis LEDs............................................................................................................................... 49
9.1.1 Diag1 (green) ................................................................................................................... 49
9.1.2 Diag2 (red) ....................................................................................................................... 50
9.2 Diagnosis objects ............................................................................................................................ 51
9.3 Possible causes of diagnostic messages........................................................................................ 53

10 Service life ............................................................................................................................................... 54

11 Maintenance and cleaning ..................................................................................................................... 55

12 Decommissioning ................................................................................................................................... 56
12.1 Disposal .......................................................................................................................................... 56
12.1.1 Returning to the vendor.................................................................................................... 56

13 Appendix .................................................................................................................................................. 57
13.1 Volatility ........................................................................................................................................... 57
13.2 Focus of certificates ........................................................................................................................ 58
13.3 Certificate ........................................................................................................................................ 59

4 Version: 2.0.0 EK1914

 Notes on the documentation

1 Notes on the documentation

1.1 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.

In these operating instructions we define all permissible use cases whose properties and operating
conditions we can guarantee. The use cases we define are fully tested and certified. Use cases beyond this,
which are not described in these operating instructions, require the approval of Beckhoff Automation GmbH
& Co KG.

1.1.1 Trademarks
Beckhoff®, TwinCAT®, EtherCAT®, EtherCAT G®, EtherCAT G10®, EtherCAT P®, Safety over EtherCAT®,
TwinSAFE®, XFC®, XTS® and XPlanar® are registered and licensed trademarks of Beckhoff Automation
GmbH.
The use of other brand names or designations by third parties may lead to an infringement of the rights of
the owners of the corresponding designations.

1.1.2 Patents
The EtherCAT technology is protected by patent rights through the following registrations and patents with
corresponding applications and registrations in various other countries:
• EP1590927
• EP1789857
• EP1456722
• EP2137893
• DE102015105702

EtherCAT® is a registered trademark and patented technology,

licensed by Beckhoff Automation GmbH.

Safety over EtherCAT® is a registered trademark and patented

technology, licensed by Beckhoff Automation GmbH.

EK1914 Version: 2.0.0 5

Notes on the documentation

1.1.3 Limitation of liability

All components in this product as described in the operating instructions are delivered in a specific
configuration of hardware and software, depending on the application regulations. 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:

• Failure to observe these operating instructions
• Improper use
• Use of untrained personnel
• Use of unauthorized spare parts

1.1.4 Copyright
© Beckhoff Automation GmbH & Co. KG, Germany.
The distribution and reproduction of this document as well as the use and communication of its contents
without express authorization are prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a
patent, utility model or design.

6 Version: 2.0.0 EK1914

 Notes on the documentation

1.2 Version numbers

Version Comment
2.0.0 • Migration
• Editorially revised
• In chapter Technical data link to download page of certificates added
• Appendix adapted and expanded
1.3.1 • Technical data permissible air pressure extended
1.3.0 • Note on the extended temperature range added to the technical data
1.2.0 • Reliability document updated
• Safety parameters updated
• Foreword revised
1.1.2 • Reliabililty document added
• Chapter reaction times added
1.1.1 • Certificate updated
1.1.0 • Version numbers added
• Company address changed
• Description DateCode added
• HFT and classification element added
1.0.1 • Certificate added
1.0.0 • First released version

Currentness

Please check whether you are using the current and valid version of this document. The current version can
be downloaded from the Beckhoff homepage at http://www.beckhoff.de/twinsafe. In case of doubt, please
contact Technical Support (see Beckhoff Support and Service [} 10]).

Origin of the document

The original documentation is written in German. All other languages are derived from the German original.

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.

EK1914 Version: 2.0.0 7

Notes on the documentation

1.3 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. This includes all applicable and valid laws, regulations, provisions and standards.

Trained specialists

Trained specialists have extensive technical knowledge from studies, apprenticeships or technical training.
Understanding of control technology and automation is available. Trained specialists can:
• Independently identify, avoid and eliminate sources of hazard.
• Apply relevant standards and directives.
• Implement specifications from accident prevention regulations.
• Evaluate, prepare and set up the workplaces.
• Evaluate, optimize and execute work independently.

8 Version: 2.0.0 EK1914

 Notes on the documentation

1.4 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 in the operating instructions.

Observe the warnings in the chapters so that you can handle and work with the product as intended and
safely.

1.4.1 Explanation of symbols

Various symbols are used for a clear arrangement:
1. The numbering indicates an action that should be taken.
• The bullet point indicates an enumeration.
[…] The square brackets indicate cross-references to other text passages in the document.
[1] The number in square brackets indicates the numbering of a referenced document.

1.4.1.1 Pictograms
In order to make it easier for you to find text passages, pictograms and signal words are used in warning
notices:

DANGER

Failure to observe will result in serious or fatal injuries.

WARNING

Failure to observe may result in serious or fatal injuries.

CAUTION

Failure to observe may result in minor or moderate injuries.

NOTE
Notes
Notes are used for important information on the product. The possible consequences of failure to observe
these include:
• Malfunctions of the product
• Damage to the product
• Damage to the environment

Information
This sign indicates information, tips and notes for dealing with the product or the software.

EK1914 Version: 2.0.0 9

Notes on the documentation

1.5 Beckhoff Support and Service

Support

Beckhoff Support offers technical advice on the use of individual Beckhoff products and system planning.
The employees support you in the programming and commissioning of sophisticated automation systems.
Hotline: +49 5246/963-157
E-mail: support@beckhoff.com
Web: www.beckhoff.com/support

Training

Training in Germany takes place in our training center at the Beckhoff headquarters in Verl, at subsidiaries
or, by arrangement, at the customer's premises.
Hotline: +49 5246/963-5000
E-mail: training@beckhoff.com
Web: www.beckhoff.com/training

Service

The Beckhoff Service Center supports you with after-sales services such as on-site service, repair service or
spare parts service.
Hotline: +49 5246/963-460
E-mail: service@beckhoff.com
Web: www.beckhoff.com/service

Download area

In the download area you can obtain product information, software updates, the TwinCAT automation
software, documentation and much more.
Web: www.beckhoff.com/download

Headquarters

Beckhoff Automation GmbH & Co. KG

Hülshorstweg 20
33415 Verl
Germany
Phone: +49 5246/963-0
E-mail: info@beckhoff.com
Web: www.beckhoff.com

For the addresses of our worldwide locations, please visit our website at Global Presence.

10 Version: 2.0.0 EK1914

 For your safety

2 For your safety

2.1 Safety instructions

2.1.1 Before operation

Ensure traceability

Ensure the traceability of the TwinSAFE component via the serial number.

Use in machines according to the Machinery Directive

Only use the TwinSAFE component in machines that comply with the Machinery Directive. This is how you
ensure safe operation.

Carry out commissioning test

Before commissioning, wiring faults to the sensors must be excluded. Before commissioning, carry out a
commissioning test. After a successful commissioning test, you can use the TwinSAFE component for the
intended safety-related task.

In case of wiring errors, the safety function of the product is at risk. Depending on the machine, death and
danger to life, serious bodily injury and damage to the machine may result.

Use SELV/PELV power supply

Use a SELV/PELV power supply unit with an output-side voltage limit of Umax = 36 VDC to supply the
TwinSAFE component with 24 VDC.

Failure to observe this will endanger the safety function of the product. Depending on the machine, death
and danger to life, serious physical injury and damage to the machine may result.

2.1.2 In 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. If you exceed the limits for emitted interference
specified in the standards, the function of the TwinSAFE component may be impaired.

2.1.3 After operation

De-energize and switch off components before working on them

Check all safety-relevant equipment for functionality before working on the TwinSAFE component. Secure
the working environment. Secure the machine or plant against being inadvertently started up. Observe the
chapter Decommissioning [} 56].

EK1914 Version: 2.0.0 11

The Beckhoff EtherCAT Terminal system

3 The Beckhoff EtherCAT Terminal system

The Beckhoff EtherCAT Terminal system is used for decentralized connection of sensors and actuators to a
controller. The components of the Beckhoff EtherCAT Terminal system are mainly used in industrial
automation and building management systems. As a minimum, a bus station consists of an EtherCAT
Coupler and connected EtherCAT Terminals. The EtherCAT Coupler forms the communication interface to
the higher-level controller, while the EtherCAT Terminals form the interface to the sensors and actuators.
The whole bus station is clipped onto a 35 mm DIN mounting rail (EN 60715). The mechanical link of the bus
station is established with a slot and key system on EtherCAT Couplers and EtherCAT Terminals.

The sensors and actuators are connected with the terminals via the screwless (spring-loaded) connection
system.

Fig. 1: Slot and key system and screwless (spring-loaded) connection system

12 Version: 2.0.0 EK1914

 The Beckhoff EtherCAT Terminal system

3.1 EtherCAT Bus Coupler

Mechanical data Bus Coupler
Material polycarbonate, polyamide (PA6.6).
Dimensions (W x H x D) 44 mm x 100 mm x 68 mm
Mounting on 35 mm mounting rail (EN 60715) with locking
Attachable by double slot and key connection

Fig. 2: Bus Coupler (EtherCAT)

Connection technology Bus Coupler

Wiring Spring-loaded system
Connection cross-section 0.08 mm² ... 2.5 mm², stranded wire, solid wire
Fieldbus connection EtherCAT
Power contacts 3 spring contacts
Current load 10 A
Nominal voltage 24 VDC

EK1914 Version: 2.0.0 13

The Beckhoff EtherCAT Terminal system

3.2 EtherCAT Terminals

Mechanical data Bus Terminal
Material polycarbonate, polyamide (PA6.6).
Dimensions (W x H x D) 12 mm x 100 mm x 68 mm or 24 mm x 100 mm x 68 mm
Mounting on 35 mm mounting rail (EN 60715) with locking
Attachable by double slot and key connection

Fig. 3: Overview of EtherCAT Terminals

Connection technology Bus Terminal

Wiring Spring-loaded system
Connection cross-section typically 0.08 mm² – 2.5 mm², stranded wire, solid wire
Communication E-bus
Power contacts Up to 3 blade/spring contacts
Current load 10 A
Nominal voltage Depending on terminal type (typically 24 VDC)

14 Version: 2.0.0 EK1914

 The Beckhoff EtherCAT Terminal system

3.3 E-bus
The E-bus is the data path within a terminal strip. The E-bus is led through from the Bus Coupler through all
the terminals via six contacts on the terminals' side walls.

3.4 Power contacts

The operating voltage is passed on to following terminals via three power contacts. Terminal strip can be
split into galvanically isolated groups by means of potential supply terminals as required. The supply
terminals play no part in the control of the terminals, and can be inserted at any locations within the terminal
strip.

EK1914 Version: 2.0.0 15

System description TwinSAFE

4 System description TwinSAFE

4.1 Extension of the Beckhoff I/O system with safety

functions
The TwinSAFE products from Beckhoff enable convenient expansion of the Beckhoff I/O system with safety
components, and integration of all the cabling for the safety circuit within the existing fieldbus cable. Safe
signals can be mixed with standard signals as required. The transfer of safety-related TwinSAFE telegrams
is handled by the standard controller. Maintenance is simplified significantly thanks to faster diagnosis and
simple replacement of components.

The following basic functionalities are included in the TwinSAFE components:

digital inputs (e.g. EL19xx, EP1908), digital outputs (e.g. EL29xx), drive components (e.g. AX5805) and logic
units (e.g. EL6900, EL6910). For a large number of applications, the complete safety sensor and actuator
technology can be wired on these components. The required logical link of the inputs and the outputs is
handled by the EL69xx. In addition to Boolean operations, the EL6910 now also enables analog operations.

4.2 Safety concept

TwinSAFE: Safety and I/O technology in one system
• Extension of the familiar Beckhoff I/O system with TwinSAFE components
• Safe and non-safe components can be combined as required
• Logical link of the I/Os in the EL69xx TwinSAFE logic terminal
• Suitable for applications up to SIL 3 according to EN 61508:2010 and Cat 4, PL e according to
DIN EN ISO 13849-1:2008
• Safety-relevant networking of machines via bus systems
• In the event of an error, all TwinSAFE components always switch to the wattless and therefore safe
state
• No safety requirements for the higher-level standard TwinCAT system

Safety over EtherCAT protocol (FSoE)

• Transfer of safety-relevant data via any media (“genuine black channel”)
• TwinSAFE communication via fieldbus systems such as EtherCAT, Lightbus, PROFIBUS, PROFINET
or Ethernet
• IEC 61508:2010 SIL 3 compliant
• FSoE is IEC standard (IEC 61784-3-12) and ETG standard (ETG.5100)

Fail-safe principle (fail stop)

The basic rule for a safety system such as TwinSAFE is that failure of a part, a system component or the
overall system must never lead to a dangerous condition. The safe state is always the switched off and
wattless state.

CAUTION
Safe state
For all TwinSAFE components the safe state is always the switched-off, wattless state.

16 Version: 2.0.0 EK1914

 Product description

5 Product description

5.1 General description

EK1914 - TwinSAFE Bus Coupler with two fail-safe inputs and two fail-safe outputs

The EK1914 is an EtherCAT Bus Coupler with 4 standard inputs, 4 standard outputs, and 2 fail-safe inputs
and 2 fail-safe outputs.

The EK1914 fulfils the requirements of DIN EN ISO 13849-1:2008 (Cat 4, PL e).

The TwinSAFE Bus Coupler has the usual design of an EtherCAT coupler.

Fig. 4: EK1914 overview

EK1914 Version: 2.0.0 17

Product description

5.2 Intended use

WARNING
Caution - Risk of injury!
The TwinSAFE compact controller may only be used for the purposes described below!

The EK1914 TwinSAFE Bus Coupler expands the application area of the Beckhoff Bus Terminal system by
functions that enable it to be used in the field of machine safety as well. The TwinSAFE Bus Coupler is
designed for machine safety functions and directly associated industrial automation tasks. They are therefore
only approved for applications with a defined fail-safe state. This safe state is the wattless state. Fail-safety
according to the relevant standards is required.

The TwinSAFE Bus Coupler permits the connection of

• 24 VDC sensors such as
emergency off push-button switches, rope pull switches, position switches, two-hand switches, safety
switching mats, light curtains, light barriers, laser scanner, etc.
• 24 VDC actuators such as
contactors, protective door switches with tumbler, signal lamps, servo drives, etc.

NOTE
Test pulses
When selecting actuators, please ensure that the EK1914 test pulses do not lead to actuator switching or a
diagnostic message from the EK1914.

This module is suitable for operation in an EtherCAT network and can be extended by EtherCAT Terminals
of the type ELxxxx.

CAUTION
Follow the machinery directive
The TwinSAFE Bus Coupler may only be used in machines in accordance with the machinery directive.

CAUTION
Ensure traceability
The buyer has to ensure the traceability of the device via the serial number.

18 Version: 2.0.0 EK1914

 Product description

5.3 Technical 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/.

Data Comment

• Task within the EtherCAT Coupling of EtherCAT Terminals

system (ELxxxx) to 100BASE-TX
EtherCAT networks
• Protocol / Baud rate EtherCAT Device Protocol / 100
MBaud
• Cable length between two Bus max. 100 m 100BASE-TX
Couplers
• Transmission medium at least Ethernet CAT-5 cable
• Bus connection 2 x RJ45
• Supply voltage for the EK1914 24 VDC (–15% / +20%)
(PELV)
• Number of standard inputs 4
• Number of standard outputs 4
• Number of safe inputs 2
• Number of safe outputs 2
• Status display 16 LEDs
• Reaction time typical: 4 ms, Read input/write to E-bus
max.: see error reaction time
• Error reaction time ≤ watchdog time
• Signal voltage “0”, standard -3 V - 5 V EN 61131-2, type 1/3
inputs
• Signal voltage “1”, standard 11 V - 30 V EN 61131-2, type 3
inputs
• Input filter of standard inputs 500 µs
• Input current of standard inputs typical 3 mA EN 61131-2, type 3
• Output current per standard max. 0,5A
output
• Output current of the clock typical 10 mA,
outputs max. 15 mA
• Output current per safe output max. 500 mA,
min. 20 mA
• Actuators When selecting actuators please
ensure that the test pulses from
the safe outputs do not lead to
actuator switching
• Cable length unshielded max. 100 m
between (at 0,75 or 1 mm²)
sensor/
actuator and shielded max. 100 m
Bus Coupler (at 0,75 or 1 mm²)
• Input process image 8 byte
• Output process image 8 byte
• E-bus power supply (5 V) max. 500 mA In case of higher current consumption,
use additional EL9410 power feed
terminals.
• Power contacts (PELV) max. 24VDC, max. 4A

EK1914 Version: 2.0.0 19

Product description

Data Comment

• Current consumption typical 72 mA Excluding current consumption of the

sensors/actuators and further
terminals on the E-bus.
• Power loss of the Bus Coupler typical 1,8 W Without connected sensors/actuators
• Electrical isolation channels No Between the channels
• Electrical isolation E-bus No Between the channels and the E-bus
• Electrical isolation EtherCAT Yes Between the EtherCAT connections
and the channels/E-bus
• Insulation voltage Insulation tested with 500 VDC Between the EtherCAT connections
and the channels/E-bus, under
common operating conditions
• Dimensions (W x H x D) approx. 44 mm x 100 mm x 68 For further information see
mm Dimensions [} 23].
• Weight approx. 123 g

20 Version: 2.0.0 EK1914

 Product description

5.4 Safety parameters

Safety parameters Comment

Lifetime 20 a
Prooftest-Intervall / Special proof tests during the entire
service life of the TwinSAFE Bus
Coupler are not required.
PFHD 2,64E-09
%SIL3 2,64%
PFD 3,92E-05
%SIL3 3,92%
MTTFD High
DC High
SFF >99 %
Performance Level e
Category 4
HFT 1
Element classification Typ B According to EN 61508-2:2010
chapter 7.4.4.1.2 and 7.4.4.1.3.

The TwinSAFE Bus Coupler can be used for safety-related applications within the meaning of EN ISO
13849-1 up to PL e (Cat4).

To calculate or estimate the MTTFd value out of the PFHD value please refer to the Application Guide
TwinSAFE or to the ISO 13849-1:2015 table K.1.

EK1914 Version: 2.0.0 21

Product description

5.5 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.

WARNING
Do not use TwinSAFE components under the following operating conditions:
• under the influence of ionizing radiation (which exceeds the level of natural ambient radiation)
• in a corrosive environment
• in an environment that leads to inadmissible contamination of the TwinSAFE component.

Permissible requirements for the environment Explanation

Umweltbedingungen
• Permissible ambient temperature 0°C to +55°C
(operation) up to HW05
• Permissible ambient temperature -25°C to +55°C
(operation) from HW06
• Permissible ambient temperature -25°C to +70°C
(transport/storage)
• Permissible air humidity 5% to 95%, non-condensing
• Permissible air pressure (operation/ 750 hPa to 1100 hPa This corresponds to a height of approx.
storage/transport) -690 m to 2450 m over sea level
assuming an international standard
atmosphere.
• Climate category 3K3 According to EN 60721-3-3:1995/
A2:1997.
The deviation from 3K3 is possible
only with optimal environmental
conditions and also applies only to the
technical data which are specified
differently in this documentation.
• Pollution degree 2 comply with the chapter Maintenance
and cleaning [} 55].
• EMC immunity/emission According to EN 61000-6-2 /
EN 61000-6-4
• Vibration/shock resistance According to EN 60068-2-6 /
EN 60068-2-27
• Shocks 15 g with pulse duration 11
ms in all three axes
• Protection class IP20
• Permitted operating environment In the control cabinet or
terminal box, with minimum
protection class IP54
according to IEC 60529
• Correct installation position See chapter Installation
position and minimum
distances [} 26].

22 Version: 2.0.0 EK1914

 Product description

5.6 Dimensions

Fig. 5: Dimensions

Width: 44 mm

Height: 100 mm

Depth: 68 mm

EK1914 Version: 2.0.0 23

Transport and storage

6 Transport and storage

WARNING
Observe specified environmental conditions
Ensure that the digital TwinSAFE components are only transported and stored under the specified
environment conditions. The environmental conditions can be found in chapter Environmental conditions
[} 22].
Incorrect transport or storage can damage the TwinSAFE components.

Ensure that the TwinSAFE component is not damaged during transport and storage. Use the manufacturer's
original packaging.

You have the option of storing the TwinSAFE component for a short or longer period. Observe the conditions
from chapter Environmental conditions [} 22].

Checking 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 [} 10].

24 Version: 2.0.0 EK1914

 Installation

7 Installation

7.1 Safety instructions

Before installing and commissioning the TwinSAFE components please read the safety instructions in the
foreword of this documentation.

7.2 Transport / storage

For transport and storage of the TwinSAFE components, use the original packaging in which the
components were delivered.

CAUTION
Note the specified environmental conditions
Ensure that the digital TwinSAFE components are only transported and stored under the specified ambient
conditions. The ambient conditions can be found in the technical data.
Incorrect transport or storage can damage the TwinSAFE components. Never use damaged TwinSAFE
components. Dispose of the affected product.

7.3 Mechanical installation

WARNING
Only work on TwinSAFE components when they are de-energized
The Bus Terminal system is live. Set the Bus Terminal system to a safe, de-energized state before you
start mounting, dismounting or wiring the TwinSAFE components.
If you work on the TwinSAFE components while the Bus Terminal system is live, you may be injured by
electric shock. In addition, the device may be damaged.

EK1914 Version: 2.0.0 25

Installation

7.3.1 Control cabinet / terminal box

The TwinSAFE terminals must be installed in a control cabinet or terminal box with IP54 protection class
according to IEC 60529 as a minimum.

7.3.2 Installation position and minimum distances

Fig. 6: Installation position and minimum distances

Mount the mounting rail horizontally for the specified installation position. The connection surfaces of the EL
terminals or KL terminals must face forwards. This can be seen from the illustration.

The components are ventilated from bottom to top, which enables optimum cooling of the electronics by
convection ventilation. The direction specification "down" corresponds to the direction of the positive
acceleration due to gravity.

NOTE
Observe minimum distances
Maintain the distances to neighboring devices and control cabinet walls specified in the figure. This is the
only way to ensure optimum convection cooling.
If sufficient convection cooling is not ensured, the devices may overheat and be damaged.

26 Version: 2.0.0 EK1914

 Installation

7.3.3 Installation on mounting rails

WARNING
Only work on TwinSAFE components when they are de-energized
The Bus Terminal system is live. Set the Bus Terminal system to a safe, de-energized state before you
start mounting, dismounting or wiring the TwinSAFE components.
If you work on the TwinSAFE components while the Bus Terminal system is live, you may be injured by
electric shock. In addition, the device may be damaged.

Assembly

Fig. 7: Installation on the mounting rail

The EtherCAT Couplers and TwinSAFE Terminals are snapped onto standard 35 mm mounting rails by
applying slight pressure. The mounting rails are top-hat rails according to EN 60715. Mount the components
in the following sequence:
1. Plug the EtherCAT coupler onto the mounting rail.
2. Plug the TwinSAFE terminals together with tongue and groove.
3. ush the TwinSAFE terminals against the mounting rail until the latch audibly engages on the mounting
rail.

Ensure functional component connection

Adhere to the described assembly sequence. First plug the TwinSAFE terminals together with
tongue and groove. Only push the TwinSAFE terminals onto the mounting rail after they have been
plugged together.
If you first snap the TwinSAFE terminals onto the mounting rail and then push them next to each
other without the tongue and groove interlocking, no functional connection will be established.
When correctly mounted, no significant gap should be visible between the housings.

EK1914 Version: 2.0.0 27

Installation

Use suitable mounting rail fastening

The locking mechanism of the TwinSAFE terminals and the EtherCAT Coupler extends into the
profile of the mounting rail. When mounting the components, ensure that the locking mechanism
does not come into conflict with the mounting screws of the mounting rail. Use flat mounting
connections such as countersunk screws or blind rivets to fasten mounting rails with a height of 7.5
mm under the terminals and couplers.

Disassembly

Fig. 8: Removal from mounting rail

Each TwinSAFE terminal is secured on the mounting rail by a latch. For disassembly, the locking of the
TwinSAFE terminals must be released as follows:
4. Pull the TwinSAFE terminal down approx. 1 cm from the mounting rail by the orange-colored tab. The
mounting rail lock of the TwinSAFE terminal is released automatically.
5. Grip the unlocked TwinSAFE terminal simultaneously at the top and bottom of the housing surfaces with
thumb and index finger.
6. Pull the TwinSAFE terminal out of the Bus Terminal block with little force.

28 Version: 2.0.0 EK1914

 Installation

7.4 Electrical installation

7.4.1 Connections within a Bus Terminal block

The electric connections between the Bus Coupler and the Bus Terminals are automatically realized by
joining the components:

Spring contacts (E-bus)

The 6 spring contacts of the E-bus take over the transmission of the data and the supply of the bus terminal
electronics.

NOTE
Observe E-bus current
Observe the maximum current that your EtherCAT coupler can supply for E-bus supply! Use the EL9410
power supply terminal if the current consumption of your TwinSAFE terminals exceeds the maximum
current that your EtherCAT coupler can supply for E-bus supply.

Power contacts

The power contacts transmit the supply for the field electronics and thus represent a supply rail within the
Bus Terminal block. The power contacts are supplied via terminals on the EtherCAT coupler.

Observe contact assignments of the power contacts

When configuring a Bus Terminal block, note the contact assignments of the individual TwinSAFE
terminals, since some types do not loop through the power contacts, or not completely. This may be
the case, for example, with analog Bus Terminals or digital 4-channel Bus Terminals.
Power feed terminals interrupt the power contacts and thus represent the start of a new supply rail.
Possible power supply terminals are the EL91xx and the EL92xx.

EK1914 Version: 2.0.0 29

Installation

PE power contact

The power contact labelled PE can be used as a protective earth. For safety reasons this contact mates first
when plugging together, and can ground short-circuit currents of up to 125 A.

Fig. 9: PE power contact

DANGER
Serious risk of injury
Never use the PE power contact for other potentials.

CAUTION
Disconnect PE supply line for insulation test
For insulation testing disconnect the PE feed line at the EtherCAT coupler or the power terminal. In order to
decouple further supply points for the test, you can unlock these supply terminals and pull them at least 10
mm out of the interconnection of the other terminals.
Note that for EMC reasons the PE contacts are capacitively connected to the mounting rail. This can lead to
incorrect results during insulation testing and also to damage to the TwinSAFE component.

7.4.2 Overvoltage protection

Provide a surge filter against overvoltage for the supply voltage of the Bus Terminal block and the TwinSAFE
components, if protection against overvoltages is required in your system.

30 Version: 2.0.0 EK1914

 Installation

7.4.3 HD housing wiring

Fig. 10: Connection of a cable to a terminal point

Up to 16 terminal points enable the connection of solid or finely stranded wires to the EtherCAT Terminal.
The terminal points are spring-loaded.

Several conductors at one connection

If it is necessary to connect several conductors to one connection, pre-connect them with terminal
blocks, for example.

Solid and stranded wire conductors with ferrules can be inserted directly into the terminal point. This
eliminates steps 1 and 3 in the above illustration. For all other conductor types, the terminal point must be
opened with a screwdriver to establish the connection.

Connect the cables as follows:

1. Open a terminal point by pushing a screwdriver straight into the

square opening above the terminal point as far as it will go. Do not turn or move the screwdriver back
and forth (do not lever)
2. The wire can now be inserted into the round terminal opening without any force.
3. The terminal closes automatically when the pressure is released, holding the wire safely and
permanently.

EK1914 Version: 2.0.0 31

Installation

7.4.4 High Density terminals

Fig. 11: HD terminals

The ELx8xx / KLx8xx series Bus Terminals, like the EK1914 with 16 connection points, are characterized by
a particularly compact design, since the packing density on 12 mm is twice that of standard Bus Terminals.
Solid conductors equipped with a wire end ferrule can be plugged directly into the spring terminal point
without tools.

Ultrasonic strand-compressed conductors

Ultrasonic stranded (ultrasonically welded) conductors can also be connected to the standard and
high-density (HD) terminals.
Please refer to the following table for the conductor cross-section.

7.4.5 Wire cross sections (HD)

With the HD Terminals or Bus Couplers the wires are connected without tools in the case of solid wires using
the direct plug-in technique, for example the wire is simply inserted into the contact point after stripping the
insulation. The cables are released, as in the case of the standard terminals, using the contact release with
the aid of a screwdriver. The permissible conductor cross-sections can be taken from the following table.

Terminal housing EK1914

Wire cross-section (core wire with wire end sleeve) 0,14 - 0,75 mm2
Wire cross-section (solid) 0,08 - 1,5 mm2
Wire cross-section (fine-wire) 0,25 - 1,5 mm2
Wire cross-section (Ultrasonically "bonded") 1,5 mm2 only
Strip length 8 - 9 mm

32 Version: 2.0.0 EK1914

 Installation

7.4.6 Pin assignment

Fig. 12: Pin assignment of the EK1914

Terminalpoint Signal Description

1 +24V Supply Voltage Us
2 In1 Standard input 1
3 In3 Standard input 3
4 Out 1 Standard output 1
5 Out 3 Standard output 3
6 Safe In1 Clock output safe input 1
7 Safe input 1
8 Safe Out 1 Safe output 1
9 0V Supply Voltage Us
10 In2 Standard input 2
11 In4 Standard input 4
12 Out 2 Standard output 2
13 Out 4 Standard output 4
14 Safe In2 Clock output safe input 2
15 Safe input 2
16 Safe Out 2 Safe output 2

Configurable safe inputs

The safe inputs 1 and 2 can be optionally assigned with normally closed contacts or normally open
contacts. The corresponding evaluation takes place in the safety PLC.

NOTE
Test pulses of the safe outputs
When selecting the actuators, ensure that the test pulses of the EK1914 do not lead to switching of the
actuator or a diagnostic message of the EK1914.

EK1914 Version: 2.0.0 33

Installation

7.4.6.1 Permitted cable length - inputs

Fig. 13: Cable length input

When connecting a single switching contact via its own continuous cabling (or via a non-metallic sheathed
cable), the maximum permitted cable length is 100 m.

NOTE
Route the signal cable separately
Route signal cable separately from potential sources of interference. Possible sources of interference are,
for example, motor supply cables or power cables with 230 VAC. Keep the distance between the cables as
large as possible.
Interference from cables routed in parallel can influence the signal shape of the test pulses and thus cause
diagnostic messages. Possible diagnostic messages are, for example, sensor errors.

The following illustrations show correct and incorrect signal routing. Observe the illustration legend.

Fig. 14: Route signal lines correctly

34 Version: 2.0.0 EK1914

 Installation

Fig. 15: Route signal lines incorrectly

Illustration legend
D Distance between cable ducts
Blue arrows Signature lines
Red arrows Potential sources of interference

A common signal routing with other clocked signals in a bus also reduces the maximum extension. The
reason for this is that crosstalk of the signals may occur on a long line length and diagnostic messages
appear. If the connection via a bus line is unavoidable, the test pulses can be switched off (Sensor test
parameter). However, this then leads to a reduction in the diagnostic coverage when calculating the
performance level.
The use of contact points, connectors or additional switching contacts in the cabling also reduces the
maximum expansion.

The typical length of a test pulse (switching from 24 V to 0 V and back to 24 V) is approximately 380 µs and
occurs about 400 times per second.
In the step mat mode (parameter: "Short cut is no module fault"), test pulses with a typical length of 750 µs
are generated in addition to the typical test pulse lengths of 380 µs.

EK1914 Version: 2.0.0 35

Installation

7.4.6.2 Permitted cable length - outputs

Fig. 16: Cable length output

When connecting a single actuator via its own continuous cabling (or via a sheathed cable), the maximum
permitted cable length is 100 m.

NOTE
Route the signal cable separately
Route signal cable separately from potential sources of interference. Possible sources of interference are,
for example, motor supply cables or power cables with 230 VAC. Keep the distance between the cables as
large as possible.
Interference from cables routed in parallel can influence the signal shape of the test pulses and thus cause
diagnostic messages. Possible diagnostic messages are, for example, sensor errors.

The following illustrations show correct and incorrect signal routing. Observe the illustration legend.

36 Version: 2.0.0 EK1914

 Installation

Fig. 17: Route signal lines correctly

Fig. 18: Route signal lines incorrectly

Illustration legend
D Distance between cable ducts
Blue arrows Signature lines
Red arrows Potential sources of interference

The common routing of signals together with other clocked signals in a common cable also reduces the
maximum propagation since crosstalk of the signals can occur over long cable lengths and cause diagnostic
messages. If connection via a common cable cannot be avoided, the test pulses can be switched off
(parameter: “Testing of outputs active”). However, this then leads to a reduction in the degree of diagnostic
cover when calculating the performance level.
The use of contact points or plug connectors in the cabling similarly reduces the maximum expansion.

The typical length of a test pulse (switching from 24 V to 0 V and back to 24 V) is 300 µs to 800 µs but can
also be longer in individual cases. Testing usually takes place 3 to 6 times per second.

EK1914 Version: 2.0.0 37

Installation

Test pulses for the outputs

The following diagram shows a typical test pulse curve for the two outputs of an EK1914. The parameter
Testing of outputs active is enabled.

Fig. 19: Test pulses

38 Version: 2.0.0 EK1914

 Installation

7.5 TwinSAFE reaction times

The TwinSAFE terminals form a modular safety system that exchanges safety-oriented data via the Safety-
over-EtherCAT protocol. This chapter is intended to help you determine the system's reaction time from the
change of signal at the sensor to the reaction at the actuator.

7.5.1 Typical reaction time

The typical reaction time is the time that is required to transmit information from the sensor to the actuator, if
the overall system is working without error in normal operation.

Definition Description
RTSensor Reaction time of the sensor until the signal is provided at the interface.
Typically supplied by the sensor manufacturer.
RTInput Reaction time of the safe input, such as EL1904 or EP1908. This time can
be found in the technical data. In the case of the EL1904 it is 4 ms.
RTComm Reaction time of the communication This is typically 3x the EtherCAT cycle
time, because new data can only be sent in a new Safety-over-EtherCAT
telegram. These times depend directly on the higher-level standard
controller (cycle time of the PLC/NC).
RTLogic Reaction time of the logic terminal. This is the cycle time of the logic
terminal and typically ranges from 500 µs to 10 ms for the EL6900,
depending on the size of the safety project. The actual cycle time can be
read from the terminal.
RTOutput Reaction time of the output terminal. This typically lies within the range of 2
to 3 ms.
RTActor Reaction time of the actuator. This information is typically supplied by the
actuator manufacturer
WDComm Watchdog time of the communication

The following formula results for the typical reaction time:

ReactionTimetyp = RTSensor + RTInput + 3 * RTComm + RTLogic + 3 * RTComm + RTOutput + RTActuator

Example for reaction time calculation:

ReactionTimetyp = 5 ms + 4 ms + 3 * 1 ms + 10 ms + 3 * 1 ms + 3 ms + 20 ms = 48 ms

EK1914 Version: 2.0.0 39

Installation

7.5.2 Worst-case reaction time

The worst-case reaction time is the maximum time required to switch off the actuator in the case of an error.

This assumes that a signal change occurs at the sensor and is transmitted to the input. A
communication error occurs at precisely the moment when the signal is to be transferred to the
communication interface. This is detected by the logic following the watchdog time of the
communication link.
This information should then be transferred to the output, but a further communication error occurs
here. This error is detected at the output following a safety watchdog time out and leads to a switch-
off.

This results in the following equation for the worst-case reaction time:

ReactionTimemax = WDComm + WDComm + RTActuator

Example for the calculation of the worst-case reaction time:

ReactionTimemax = 15 ms + 15 ms + 20 ms = 50 ms

40 Version: 2.0.0 EK1914

 Installation

7.6 Tested devices

The following list contains devices that were tested together with the EK1914 TwinSAFE Bus Coupler. The
results only apply for the current device hardware version at the time of testing. The tests were carried out in
a laboratory environment. Modifications of these products cannot be considered here. If you are unsure, test
the hardware together with the TwinSAFE Bus Coupler.

The tests were carried out as function tests only. The information provided in the respective manufacturer
documentation remains valid.

Sensors

Manufacturer Type Comment

SICK C4000 Safety light curtain
SICK S3000 Safety light scanner
Wenglor SG2-14ISO45C1 Safety light grids
Leuze lumiflex ROBUST 42/43/44 Safety light barriers
Schmersal BNS250-11ZG Safety switch
ifm GM701S Inductive safety sensor
Keyence SL-V (with PNP cable set) Safety light curtain

Actuators
Manufacturer Type Comment
Beckhoff AX5801 TwinSAFE Drive option card: safe restart lock
Siemens SIRIUS Serie S00 Contactor
3RT1016-1BB42

NOTE
Recommended protective circuits
For actuators, we recommend R/C or diode protective circuits. Varistor protective circuits should not be
used.

EK1914 Version: 2.0.0 41

Configuration of the EK1914 in TwinCAT

8 Configuration of the EK1914 in TwinCAT

CAUTION
Do not change register values
Do not make any changes to the CoE objects of the TwinSAFE bus coupler. Changes (e.g. via the
SystemManager) to the CoE objects set the coupler permanently to the Fail-Stop state.

8.1 Inserting a Beckhoff TwinSAFE Bus Coupler

An EK1914 is inserted in the same way as any other Beckhoff Bus Coupler. In the list, open Safety
Terminals and select the EK1914.

Fig. 20: Insert bus coupler

42 Version: 2.0.0 EK1914

 Configuration of the EK1914 in TwinCAT

8.2 Address settings on the EK1914 TwinSAFE Bus

Coupler

Fig. 21: Address switches

The TwinSAFE address of the coupler must be set using the three rotary switches on the side of the EK1914
TwinSAFE Bus Coupler. TwinSAFE addresses between 1 and 4095 are available.

Rotary switch Address

1 (left) 2 (center) 3 (right)
0 0 1 1
0 0 2 2
0 0 3 3
… … … …
0 0 F 15
0 1 0 16
0 1 1 17
… … … …
0 F F 255
1 0 0 256
1 0 1 257
… … … …
F F F 4095

WARNING
Unique TwinSAFE address
Each set TwinSAFE address may only occur once within a network! Address 0 is not a valid address.

EK1914 Version: 2.0.0 43

Configuration of the EK1914 in TwinCAT

8.3 Entering a TwinSAFE address and parameters in the

System Manager
The TwinSAFE address set using the DIP switch must also be set on the Safe Parameter tab (FSoE Address
entry) underneath the EK1914. The parameters for the safe inputs and outputs can also be set here.

Fig. 22: Parameters of the EK1914

The parameter settings of the EK1914 can also be set under the respective TwinSAFE connection on the
Connection and Safe Parameter tabs.

44 Version: 2.0.0 EK1914

 Configuration of the EK1914 in TwinCAT

Fig. 23: Connection settings

Fig. 24: Parameter settings

Parameter overview

PrmName Bedeutung Werte

FSoE_Address DIP switch address 1 to 4095
Standard outputs In addition the safe output can be switched off from true / false
active the standard PLC. The safe output is linked with the
standard logic signal AND.

EK1914 Version: 2.0.0 45

Configuration of the EK1914 in TwinCAT

PrmName Bedeutung Werte

Testing of outputs Test pulses for the outputs are activated true / false
active
Error acknowledge True: true / false
active Bus Coupler errors lead to a reset of the TwinSAFE
connection (error code 14 (0x0E)). This error code is
shown in the diagnostic data for the connection until
the user acknowledges it via ErrAck in the TwinSAFE
group.
False (Default):
Bus Coupler errors can only be reset by switching the
power supply off and back on again.
Sensortest Kanal 1 The clock signal of the “Clock output safe input 1” true / false
aktiv connection is tested at the “Safe input 1” connection.
Sensortest Kanal 2 The clock signal of the “Clock output safe input 2” true / false
aktiv connection is tested at the “Safe input 2” connection.
Logik Kanal 1 und 2 Logic of channels 1 and 2 • single logic
• asynchronous repetition
OSSD (sensor test must be
switched off)
• any pulse repetition OSSD
(sensor test must be
switched off)
• Short cut is no module fault
Store Code This parameter is required for the TwinSAFE Restore -
Mode.
Project CRC This parameter is required for the TwinSAFE Restore -
Mode.
Identity These parameters are used internally only. -
Detected Modules These parameters are used internally only. -

46 Version: 2.0.0 EK1914

 Configuration of the EK1914 in TwinCAT

8.3.1 Configuration of the EK1914 for light barriers, light grids,

light curtains, etc.
The EK1914 also supports direct connection of contact-free protective devices with two self-testing outputs
such as light barriers, light grids, light curtains, laser scanners, etc.

CAUTION
Sensors with self-testing outputs
Only sensors with self-testing outputs whose sensor self-test does not exceed the duration of 350 µs may
be connected to the EK1914 (see figure)!

Fig. 25: Clock outputs

Parameter

To connect these sensors please set the following parameters for the EK1914 in the TwinCAT System
Manager:
• Connect the two sensor signals to channels 1 and 2 and activate the entry asynchronous repetition
OSSD or any pulse repetition for both the inputs used under the parameter Logic for channel 1 and 2.
The difference between these settings is that with any pulse repetition simultaneous tests of the OSSD
signals up to 350 µs are allowed.
• Switch the sensor test of the EK1914 to false for both the inputs used

EK1914 Version: 2.0.0 47

Configuration of the EK1914 in TwinCAT

8.3.2 Configuration of the EK1914 for safety switching mats

The EK1914 also supports the direct connection of safety switching mats.

Parameter

To connect these safety mats please set the following parameters for the EK1914 in the TwinCAT System
Manager:
• Connect the two sensor signals to channels 1 and 2 and activate the entry short cut channel x/y is no
module fault for both the inputs used under the parameter Logic for channel 1 and 2.
• Switch the sensor test of the EK1914 to true for both the inputs used

48 Version: 2.0.0 EK1914

 Diagnosis

9 Diagnosis

9.1 Diagnosis LEDs

The LEDs Diag 1 (LED 7) and Diag 2 (LED 15) display diagnostic information for the EK1914.

Fig. 26: Diagnosis LEDs

9.1.1 Diag1 (green)

The Diag 1 LED indicates the state of the TwinSAFE interface. The LED is set as soon as the FSoE State
Reset is quit and TwinSAFE communication is thus started

EK1914 Version: 2.0.0 49

Diagnosis

9.1.2 Diag2 (red)

Diag2 lights up

The Diag 2 LED lights up red when the bus coupler has detected an external power supply or a cross-circuit.
If the error has been eliminated, the LED goes out.

A more detailed error cause is set in diagnostic CoE object 0x800E.

Diag2 flashes

In case of an error, the Diag 2 LED displays a blink code that describes the error in more detail. The blink
codes are structured as follows:

Flashing sequence Meaning

Rapid flickering Start of flashing code
First slow sequence Error code 1
Second slow sequence Error code 2
Third slow sequence Error code 3
Fourth slow sequence Error code 4

Fig. 27: Start Error code 1 Error code 2

The errors indicated by the following flashing codes are reversible. After rectification of the error cause, the
Bus Coupler can be put back into operation with a restart.

Flashing Meaning Remedy

code
2-1-1-1 The temperature has exceeded the maximum permissible Ensure observance of the
temperature (µC1) permissible ambient 3
3-1-1-1 The temperature has exceeded the maximum permissible temperature.
temperature (µC2)
4-1-1-1 The temperature has fallen below the minimum permissible
temperature (µC1)
5-1-1-1 The temperature has fallen below the minimum permissible
temperature (µC2)

If another flashing code is displayed, there is an internal coupler error that has stopped the Bus Coupler. In
this case the Bus Coupler must be checked by Automation GmbH & Co. KG.

NOTE
Note flashing codes; return the Bus Coupler
Note the flashing code displayed and include this information with the Bus Coupler when you return it.

50 Version: 2.0.0 EK1914

 Diagnosis

9.2 Diagnosis objects

The CoE objects 800Ehex display further diagnostic information.

CAUTION
Do not change CoE objects
Do not make any modifications to the CoE objects of the TwinSAFE Bus Coupler! Any modifications (e.g.
using the TwinCAT system manager) of the CoE objects would permanently set the Bus Coupler to the
Fail-Stop state.

Index 800Ehex: diagnostic objects - safe inputs

Index Name Meaning Flags Default

800E:0 Diag The following sub-indices contain detailed diagnostic RO
information.
800E:0A Sensor test error Bit Error during the sensor test RO
0 1bin Error at input 1 0bin
1 1bin Error at input 2 0bin
800E:0B Error during two- Bit Error during the contiguous evaluation of two RO
channel evaluation channels, i.e. the two channels contradict
each other.
0 1bin Error in the first input pair 0bin
800E:0C Error in the safety mat Bits Error in the input pair RO
operating mode: input 1, 0 11bin Error in the first input pair 00bin
pair not identical
800E:0D Error in the safety mat Bit Error in the test pulses in the safety mat RO
operating mode: operating mode; i.e. the Bus Coupler has
external supply detected an external supply.
0 1bin Error at input 1 0bin
1 1bin Error at input 2 0bin

Index 800Ehex: diagnostic objects - safe outputs

Index Name Meaning Flags Default

800E:0E Diagnose µC1 Value Description RO
5 Cross-circuit output 1 and output 2 0
6 Cross-circuit output 1 and output 2 0
10 Overvoltage 0
11 Undervoltage 0
21... Error when testing the field voltage switches 0
27
30... Start-up of the output circuit failed 0
33
101 External supply 0 V output 1, detected with 0
set output
102 External supply 24 V output 1 0
103 External supply 0 V output 2, detected with 0
set output
104 External supply 24 V output r 0
800E:0F Diagnose µC2 Value Description RO
201 External supply 0 V output 1, detected with 0
set output
202 External supply 24 V output 1 0

EK1914 Version: 2.0.0 51

Diagnosis

Index Name Meaning Flags Default

203 External supply 0 V output 2, detected with 0
set output
204 External supply 24 V output 2 0

NOTE
Differing diagnostic messages possible
Due to the variable order or execution of the test series, diagnostic messages differing from those given in
the table above are possible.

52 Version: 2.0.0 EK1914

 Diagnosis

9.3 Possible causes of diagnostic messages

Diagnosis Possible cause Remedial actions
Diag 2 LED 800E:0E / If parameter Testing of outputs active is switched on:
800E:0F set to: 5.6 or Faulty test pulses. Eliminate cross-circuit or
greater than 100 external supply.
Cause: external supply or cross-circuit.
Faulty test pulses. Cause: parallel routed cables with Isolate lines and lay in
high capacitive coupling and dynamized signals, separate non-metallic
possibly also in common cables sheathed cable. Create a
distance between the non-
metallic sheathed cables.
Cause: current exceeds the limit of 500 mA. Select actuator accordingly.
Current < 500 mA
Irrespective of whether the parameter Testing of outputs active is switched on:
The output voltage lies below the permissible voltage Eliminate short-circuit.
range (24 V -15%/+20%). A possible cause is a Design power supply
short-circuit at the output or e.g. a voltage drop at the accordingly. Check supply
instant of switching. lines for voltage drop.
EMC faults Take suitable EMC
measures
Internal defect Exchange Bus Coupler
Diag 2 LED 800E:0E / Voltage on the power contacts too low. Increase Bus Coupler supply
800E:0F set to: 11 voltage and reset error
display by power-on reset of
the Bus Coupler
EMC faults Take suitable EMC
measures
Internal defect Exchange Bus Coupler
Diag 2 LED 800E:0E / Field potential too high. Voltage on the power Decrease Bus Coupler
800E:0F set to: 10 contacts too high. supply voltage and reset
error display by power-on
reset of the Bus Coupler
Field potential too high. Voltage on the power Use an R/C or diode-based
contacts too high. protective circuit on the
actuators
EMC faults Take suitable EMC
measures
Internal defect Exchange Bus Coupler

EK1914 Version: 2.0.0 53

Service life

10 Service life
The TwinSAFE Bus Couplers are designed for a service life of 20 years. Due to the high diagnostic coverage
within the lifecycle no special proof tests are required.

The TwinSAFE Bus Couplers bear a date code, which is composed as follows:
Date Code: CW YY SW HW

Legend: Example: Date Code 27 14 01 00

CW: Calendar week of manufacture Calendar week: 27
YY: Year of manufacture Year: 2014
SW: Software version Software version: 01
HW: Hardware version Hardware version: 00

In addition the TwinSAFE Bus Couplers bear a unique serial number.

Fig. 28: Date Code of EK1914

54 Version: 2.0.0 EK1914

 Maintenance and cleaning

11 Maintenance and cleaning

Cleaning by the manufacturer only
Do not operate the TwinSAFE component if it is impermissibly dirty according to protection class
IP20. Send impermissibly dirty TwinSAFE components to the manufacturer for cleaning.

TwinSAFE components are basically maintenance-free.

EK1914 Version: 2.0.0 55

Decommissioning

12 Decommissioning

12.1 Disposal
NOTE
Correct disposal
Observe the applicable national laws and guidelines for disposal.
Incorrect disposal may result in environmental damage.

Remove the TwinSAFE component for disposal.

Depending on your application and the products used, make sure that the respective components are
disposed of properly:

Cast iron and metal

Hand over cast iron and metal parts to scrap metal recycling.

Cardboard, wood and polystyrene

Dispose of packaging materials made of cardboard, wood or Styrofoam in accordance with regulations.

Plastic and hard plastic

You can recycle parts made of plastic and hard plastic via the waste management center or reuse them in
accordance with the component regulations and markings.

Oils and lubricants

Dispose of oils and lubricants in separate containers. Hand over containers to the waste oil collection point.

Batteries and accumulators

Batteries and accumulators may also be marked with the crossed-out wheeled garbage can symbol. You
must separate these components from waste. You are legally obliged to return used batteries and
accumulators within the EU. Outside the validity of the EU Directive 2006/66/EC, observe the respective
regulations.

12.1.1 Returning to the vendor

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
D-33415 Verl

In addition, you have the option to contact a local certified specialist company for the disposal of used
electrical and electronic appliances. Dispose of the old components in accordance with the regulations
applicable in your country.

56 Version: 2.0.0 EK1914

 Appendix

13 Appendix

13.1 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. Non-volatile components keep the data even after loss of power.

If there is customer specific data saved on the product, it cannot be ensured that this data might not be
restored through for example forensic measures, even after the data is deleted through the provided tool
chain. If this data is confidential, the scrapping of the product after usage is recommended to protect this
data.

EK1914 Version: 2.0.0 57

Appendix

13.2 Focus of certificates

The most decisive document for certified components of the TwinSAFE department is the EC type
examination certificate. The document contains both the test coverage and the regarded component and
component family.

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). This is applicable for all components like EtherCAT
Terminals, EtherCAT Boxes, EtherCAT plug-in modules and Bus Terminals.

If you regard the example EL1918 in the picture, the certificate is valid for both the EL1918 and the available
variant EL1918-2200.

58 Version: 2.0.0 EK1914

 Appendix

13.3 Certificate

Fig. 29: EK1914 EC Declaration of Conformity

EK1914 Version: 2.0.0 59

List of figures

List of figures
Fig. 1 Slot and key system and screwless (spring-loaded) connection system ..................................... 12
Fig. 2 Bus Coupler (EtherCAT) .............................................................................................................. 13
Fig. 3 Overview of EtherCAT Terminals................................................................................................. 14
Fig. 4 EK1914 overview ......................................................................................................................... 17
Fig. 5 Dimensions .................................................................................................................................. 23
Fig. 6 Installation position and minimum distances................................................................................ 26
Fig. 7 Installation on the mounting rail ................................................................................................... 27
Fig. 8 Removal from mounting rail ......................................................................................................... 28
Fig. 9 PE power contact ......................................................................................................................... 30
Fig. 10 Connection of a cable to a terminal point..................................................................................... 31
Fig. 11 HD terminals ................................................................................................................................ 32
Fig. 12 Pin assignment of the EK1914..................................................................................................... 33
Fig. 13 Cable length input ........................................................................................................................ 34
Fig. 14 Route signal lines correctly .......................................................................................................... 34
Fig. 15 Route signal lines incorrectly ....................................................................................................... 35
Fig. 16 Cable length output ...................................................................................................................... 36
Fig. 17 Route signal lines correctly .......................................................................................................... 37
Fig. 18 Route signal lines incorrectly ....................................................................................................... 37
Fig. 19 Test pulses................................................................................................................................... 38
Fig. 20 Insert bus coupler......................................................................................................................... 42
Fig. 21 Address switches ......................................................................................................................... 43
Fig. 22 Parameters of the EK1914........................................................................................................... 44
Fig. 23 Connection settings...................................................................................................................... 45
Fig. 24 Parameter settings ....................................................................................................................... 45
Fig. 25 Clock outputs ............................................................................................................................... 47
Fig. 26 Diagnosis LEDs............................................................................................................................ 49
Fig. 27 Start Error code 1 Error code 2 .................................................................................................... 50
Fig. 28 Date Code of EK1914 .................................................................................................................. 54
Fig. 29 EK1914 EC Declaration of Conformity......................................................................................... 59

60 Version: 2.0.0 EK1914

More Information:
www.beckhoff.com/EK1914

Beckhoff Automation GmbH & Co. KG

Hülshorstweg 20
33415 Verl
Germany
Phone: +49 5246 9630
info@beckhoff.com
www.beckhoff.com