Beckhoff EL2124, EL2002, EL2004, EL2014, EL2024 Documentation

Documentation

EL20xx, EL2124

Digital Output Terminals

Version:
Date:

5.2
2019-06-06

Table of contents

Table of contents

1 Foreword ....................................................................................................................................................5

1.1 Product overview, digital output terminals .........................................................................................5

1.2 Notes on the documentation..............................................................................................................5

1.3 Safety instructions .............................................................................................................................7

1.4 Documentation issue status ..............................................................................................................8

1.5 Version identification of EtherCAT devices .......................................................................................9

1.6 Non-reactive Bus Terminals ............................................................................................................13

2 Product overview, digital output terminals...........................................................................................17

2.1 EL2002, EL2004, EL2008 - Introduction .........................................................................................17

2.1.1 EL2002, EL2004, EL2008 - Technical data ..................................................................... 19

2.1.2 EL2002 - LEDs and connection ....................................................................................... 20

2.1.3 EL2004 - LEDs and connection ....................................................................................... 21

2.1.4 EL2008 - LEDs and connection ....................................................................................... 22

2.2 EL2014 ............................................................................................................................................23

2.2.1 EL2014 - Introduction ...................................................................................................... 23

2.2.2 EL2014 - Technical data.................................................................................................. 24

2.2.3 EL2014 - LEDs and pin assignment ................................................................................ 25

2.2.4 Overload protection ......................................................................................................... 26

2.2.5 Operating modes and settings......................................................................................... 28

2.2.6 Object description and parameterization ......................................................................... 34

2.3 EL2022, EL2024, EL2024-0010 - Introduction ................................................................................43

2.3.1 EL2022, EL2024, EL2024-0010 - Technical data............................................................ 44

2.3.2 EL2022 - LEDs and connection ....................................................................................... 45

2.3.3 EL2024, EL2024-0010 - LEDs and connection ............................................................... 46

2.4 EL2032, EL2034 - Introduction........................................................................................................47

2.4.1 EL2032, EL2034 - Technical data ................................................................................... 48

2.4.2 EL2032 - LEDs and connection ....................................................................................... 49

2.4.3 EL2034 - LEDs and connection ....................................................................................... 50

2.5 EL2042 - Introduction ......................................................................................................................51

2.5.1 EL2042 - Technical data.................................................................................................. 52

2.5.2 EL2042 - LEDs and connection ....................................................................................... 53

2.6 EL2084, EL2088 - Introduction........................................................................................................54

2.6.1 EL2084, EL2088 - Technical data ................................................................................... 55

2.6.2 EL2084 - LEDs and connection ....................................................................................... 56

2.6.3 EL2088 - LEDs and connection ....................................................................................... 57

2.7 EL2124 - Introduction ......................................................................................................................58

2.7.1 EL2124 - Technical data.................................................................................................. 59

2.7.2 EL2124 - LEDs and connection ....................................................................................... 60

3 Basics communication ...........................................................................................................................61

3.1 EtherCAT basics..............................................................................................................................61

3.2 EtherCAT cabling – wire-bound.......................................................................................................61

3.3 General notes for setting the watchdog...........................................................................................62

3.4 EtherCAT State Machine.................................................................................................................64

3.5 CoE Interface...................................................................................................................................67

EL20xx, EL2124 3Version: 5.2

Table of contents

3.6 Distributed Clock .............................................................................................................................71

4 Mounting and wiring................................................................................................................................72

4.1 Installation on mounting rails ...........................................................................................................72

4.2 Installation instructions for enhanced mechanical load capacity .....................................................74

4.3 Connection ......................................................................................................................................75

4.3.1 Connection system .......................................................................................................... 75

4.3.2 Wiring............................................................................................................................... 77

4.3.3 Shielding .......................................................................................................................... 78

4.4 Installation positions ........................................................................................................................78

4.5 Positioning of passive Terminals .....................................................................................................80

4.6 ATEX - Special conditions (standard temperature range) ...............................................................81

4.7 ATEX - Special conditions (extended temperature range) ..............................................................82

4.8 ATEX Documentation ......................................................................................................................83

5 Commissioning........................................................................................................................................84

5.1 TwinCAT Quick Start .......................................................................................................................84

5.1.1 TwinCAT2 ....................................................................................................................... 87

5.1.2 TwinCAT 3 ....................................................................................................................... 97

5.2 TwinCAT Development Environment ............................................................................................109

5.2.1 Installation of the TwinCAT real-time driver................................................................... 109

5.2.2 Notes regarding ESI device description......................................................................... 115

5.2.3 TwinCAT ESI Updater ................................................................................................... 119

5.2.4 Distinction between Online and Offline.......................................................................... 119

5.2.5 OFFLINE configuration creation .................................................................................... 120

5.2.6 ONLINE configuration creation ...................................................................................... 125

5.2.7 EtherCAT subscriber configuration................................................................................ 133

5.3 General Notes - EtherCAT Slave Application................................................................................142

6 Appendix ................................................................................................................................................150

6.1 EtherCAT AL Status Codes...........................................................................................................150

6.2 UL notice .......................................................................................................................................150

6.3 Firmware compatibility...................................................................................................................151

6.4 Firmware Update EL/ES/EM/ELM/EPxxxx ....................................................................................151

6.4.1 Device description ESI file/XML..................................................................................... 152

6.4.2 Firmware explanation .................................................................................................... 155

6.4.3 Updating controller firmware *.efw................................................................................. 156

6.4.4 FPGA firmware *.rbf....................................................................................................... 157

6.4.5 Simultaneous updating of several EtherCAT devices.................................................... 161

6.5 Restoring the delivery state ...........................................................................................................162

6.6 Support and Service ......................................................................................................................163

EL20xx, EL21244 Version: 5.2

1 Foreword

1.1 Product overview, digital output terminals

Foreword

EL2002 [}17]

EL2004 [}17]

EL2008 [}17]

EL2014 [}23]

EL2022, EL2024 [}43]

EL2024-0010 [}43]

EL2032, EL2034 [}47]

EL2042 [}51]

EL2084, EL2088 [}54]

EL2124 [}58]

2 channels, 24VDC, 0.5A

4 channels, 24VDC, 0.5A

8 channels, 24VDC, 0.5A

4 channels, 24VDC, 0.5A, diagnostics

2 and 4 channels, 24VDC, 2A

4 channels, 12VDC, 2A

2 and 4 channels, 24VDC, 2A, diagnostics

2 channels, 24VDC; 2 x 4A/1 x 8A

4 and 8 channels, 24VDC, 0.5A

4 channels, 5VDC, CMOS-outputs

1.2 Notes on the documentation

Intended audience

This description is only intended for the use of trained specialists in control and automation engineering who
are familiar with the applicable national standards.
It is essential that the documentation and the following notes and explanations are followed when installing
and commissioning these components.
It is the duty of the technical personnel to use the documentation published at the respective time of each
installation and commissioning.

The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.

Disclaimer

The documentation has been prepared with care. The products described are, however, constantly under
development.

We reserve the right to revise and change the documentation 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 this documentation.

Trademarks

Beckhoff®, TwinCAT®, EtherCAT®, EtherCATP®, SafetyoverEtherCAT®, TwinSAFE®, XFC® and XTS® are
registered trademarks of and licensed by Beckhoff Automation GmbH.
Other designations used in this publication may be trademarks whose use by third parties for their own
purposes could violate the rights of the owners.

Patent Pending

The EtherCAT Technology is covered, including but not limited to the following patent applications and
patents: EP1590927, EP1789857, DE102004044764, DE102007017835 with corresponding applications or
registrations in various other countries.

The TwinCAT Technology is covered, including but not limited to the following patent applications and
patents: EP0851348, US6167425 with corresponding applications or registrations in various other countries.

EL20xx, EL2124 5Version: 5.2

Foreword

EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH,
Germany.

Copyright

© Beckhoff Automation GmbH & Co. KG, Germany.
The reproduction, distribution and utilization of this document as well as the communication of its contents to
others 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.

EL20xx, EL21246 Version: 5.2

Foreword

1.3 Safety instructions

Safety regulations

Please note the following safety instructions and explanations!
Product-specific safety instructions can be found on following pages or in the areas mounting, wiring,
commissioning etc.

Exclusion of liability

All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.

Personnel qualification

This description is only intended for trained specialists in control, automation and drive engineering who are
familiar with the applicable national standards.

Description of instructions

In this documentation the following instructions are used.
These instructions must be read carefully and followed without fail!

DANGER

Serious risk of injury!

Failure to follow this safety instruction directly endangers the life and health of persons.

WARNING

Risk of injury!

Failure to follow this safety instruction endangers the life and health of persons.

CAUTION

Personal injuries!

Failure to follow this safety instruction can lead to injuries to persons.

NOTE

Damage to environment/equipment or data loss

Failure to follow this instruction can lead to environmental damage, equipment damage or data loss.

Tip or pointer

This symbol indicates information that contributes to better understanding.

EL20xx, EL2124 7Version: 5.2

Foreword

1.4 Documentation issue status

Version Comment

5.2 - Update structure

- Chapter “Non-reactive Bus Terminals” updated

5.1 - Update structure

- Chapter “Non-reactive Bus Terminals” updated

5.0 - Update structure

- Chapter “Technical data” updated

4.9 - Chapter “Non-reactive Bus Terminals” updated

4.8 - Chapter “Introduction” updated

- Chapter “LEDs and connection” updated

- Update structure

4.7 - Chapter “Non-reactive Bus Terminals” updated

- Update structure

4.6 - Chapter “Non-reactive Bus Terminals” updated

- Chapter “Technical data” updated

4.5 - Chapter “Introduction” Notes updated

- Chapter “Technical data” updated

4.4 - Chapter “Foreword” – “Notes on the documentation“ updated

- Technical data corrected

- Chapter “TwinCAT Quickstart” added

- Chapter “EtherCAT slave process data settings” removed

4.3 - Chapter “Technical data” updated

- Chapter “Connection” updated

4.2 - Chapter “Non-reactive Bus Terminals” added

4.1 - Terminal EL2014 added

4.0 - First publication in PDF format

- Structural update

- Correction: EL2032 pin assignment, EL2042 pin assignment, EL2088 pin assignment

3.5 - “Technical data” section updated

- “Assembly instructions with increased mechanical load capacity” section supplemented

- Structural update

3.4 - *“Technical data” section updated

3.3 - Sections "EtherCAT state machine" and "Watchdog" updated

3.2 - Connection diagrams updated

3.1 - Firmware compatibility note amended

3.0 - UL note added

2.9 - EL2084, EL2088 added

2.8 - "Device description update" amended

2.7 - Trademark notes added

2.6 - Technical description amended, EL2042 amended

2.5 - Technical description amended, EL2024-0010 amended

2.4 - Technical description amended, EL2124 amended

2.3 - Technical description amended

2.2 - Technical data amended, watchdog documentation amended

2.1 - Terminals EL2022, EL2024, EL2034 added

2.0 - Terminals EL2002, EL2008 added, technical data amended

1.0 - Technical data amended

0.1 - Provisional documentation for EL20xx

EL20xx, EL21248 Version: 5.2

Foreword

1.5 Version identification of EtherCAT devices

Designation

A Beckhoff EtherCAT device has a 14-digit designation, made up of

• family key

• type

• version

• revision

Example Family Type Version Revision

EL3314-0000-0016 EL terminal

(12 mm, non­pluggable connection
level)

ES3602-0010-0017 ES terminal

(12 mm, pluggable
connection level)

CU2008-0000-0000 CU device 2008 (8-port fast ethernet switch) 0000 (basic type) 0000

3314 (4-channel thermocouple
terminal)

3602 (2-channel voltage
measurement)

0000 (basic type) 0016

0010 (high­precision version)

0017

Notes

• The elements mentioned above result in the technical designation. EL3314-0000-0016 is used in the
example below.

• EL3314-0000 is the order identifier, in the case of “-0000” usually abbreviated to EL3314. “-0016” is the
EtherCAT revision.

• The order identifier is made up of

- family key (EL, EP, CU, ES, KL, CX, etc.)

- type (3314)

- version (-0000)

• The revision -0016 shows the technical progress, such as the extension of features with regard to the
EtherCAT communication, and is managed by Beckhoff.
In principle, a device with a higher revision can replace a device with a lower revision, unless specified
otherwise, e.g. in the documentation.
Associated and synonymous with each revision there is usually a description (ESI, EtherCAT Slave
Information) in the form of an XML file, which is available for download from the Beckhoff web site.
From 2014/01 the revision is shown on the outside of the IP20 terminals, see Fig. “EL5021 EL terminal,
standard IP20 IO device with batch number and revision ID (since 2014/01)”.

• The type, version and revision are read as decimal numbers, even if they are technically saved in
hexadecimal.

Identification number

Beckhoff EtherCAT devices from the different lines have different kinds of identification numbers:

Production lot/batch number/serial number/date code/D number

The serial number for Beckhoff IO devices is usually the 8-digit number printed on the device or on a sticker.
The serial number indicates the configuration in delivery state and therefore refers to a whole production
batch, without distinguishing the individual modules of a batch.

Structure of the serial number: KKYYFFHH

KK - week of production (CW, calendar week)
YY - year of production
FF - firmware version
HH - hardware version

EL20xx, EL2124 9Version: 5.2

Foreword

Example with
Ser. no.: 12063A02: 12 - production week 12 06 - production year 2006 3A - firmware version 3A 02 ­hardware version 02

Exceptions can occur in the IP67 area, where the following syntax can be used (see respective device
documentation):

Syntax: D ww yy x y z u

D - prefix designation
ww - calendar week
yy - year
x - firmware version of the bus PCB
y - hardware version of the bus PCB
z - firmware version of the I/O PCB
u - hardware version of the I/O PCB

Example: D.22081501 calendar week 22 of the year 2008 firmware version of bus PCB: 1 hardware version
of bus PCB: 5 firmware version of I/O PCB: 0 (no firmware necessary for this PCB) hardware version of I/O
PCB: 1

Unique serial number/ID, ID number

In addition, in some series each individual module has its own unique serial number.

See also the further documentation in the area

• IP67: EtherCAT Box

• Safety: TwinSafe

• Terminals with factory calibration certificate and other measuring terminals

Examples of markings

Fig.1: EL5021 EL terminal, standard IP20 IO device with serial/ batch number and revision ID (since
2014/01)

EL20xx, EL212410 Version: 5.2

Fig.2: EK1100 EtherCAT coupler, standard IP20 IO device with serial/ batch number

Foreword

Fig.3: CU2016 switch with serial/ batch number

Fig.4: EL3202-0020 with serial/ batch number 26131006 and unique ID-number 204418

EL20xx, EL2124 11Version: 5.2

Foreword

Fig.5: EP1258-00001 IP67 EtherCAT Box with batch number/ date code 22090101 and unique serial
number 158102

Fig.6: EP1908-0002 IP67 EtherCAT Safety Box with batch number/ date code 071201FF and unique serial
number 00346070

Fig.7: EL2904 IP20 safety terminal with batch number/ date code 50110302 and unique serial number
00331701

Fig.8: ELM3604-0002 terminal with unique ID number (QR code) 100001051 and serial/ batch number
44160201

EL20xx, EL212412 Version: 5.2

Foreword

1.6 Non-reactive Bus Terminals

Use of non-reactive Bus or EtherCAT Terminals in safety applications

If a Bus or EtherCAT Terminal is described as non-reactive, this means that the consecutive termi­nal behaves passively in a safety application (e.g. in the case of the all-pole switch-off of a potential
group).
In this case the terminals do not represent an active part of the safety controller and do not affect
the Safety Integrity Level (SIL) or Performance Level (PL) attained in the safety application.

For details, please refer to chapter 2.17f in the TwinSAFE application manual.

NOTE

Pay attention to the hardware version

Please pay attention to the information about the hardware version and non-reactivity of the respective Bus
Terminal in the chapters "Technical Data" or "Firmware Compatibility"!
Only terminals with the appropriate hardware version may be used without the attained SIL/PL being af­fected!

The Bus or EtherCAT Terminals regarded as non-reactive at the time of preparing this document are listed in
the following tables together with their respective hardware versions.

Terminal name
Bus Terminal

KL2408 05

KL2809 02

KL2134 09

KL2424 05

KL9110 07

Terminal name
EtherCAT terminal

EL2004 15

EL2008 07

EL2022 09

EL2024 06

EL2034 06

EL2809 01

EL2872 01

EL2878-0005 00

EL9110 13

EL9410 16

from hardware version

from hardware version

External wiring

The following requirements are to be ensured by the system manufacturer and must be incorporated into the
user documentation.

• Protection class IP54
The terminals must be installed in IP54 control cabinets to ensure the necessary protection class IP54.

• Power supply unit
The standard terminals must be supplied with 24V by an SELV/PELV power supply unit with an output
voltage limit U

• Prevention of feedback
Feedback can be prevented through different measures. These are described below. In addition to
mandatory requirements there are also optional requirements, of which only one needs to be selected.

EL20xx, EL2124 13Version: 5.2

of 60V in the event of a fault.

max

Foreword

◦ No switching of loads with a separate power supply

Loads that have their own power supply must not be switched by standard terminals, since in this
case feedback via the load cannot be ruled out.

Fig.9: Negative example – active load

◦ The control of an STO input of a frequency converter could serve here as a negative example.

Exceptions to the general requirement are allowed only if the manufacturer of the connected load
guarantees that feedback to the control input cannot occur. This can be achieved, for example,
through adherence to load-specific standards.

◦ Option 1: Ground feedback and all-pole disconnection

The ground connection of the connected load must be fed back to the safely switched ground of
the respective output terminal.

EL20xx, EL212414 Version: 5.2

Foreword

Fig.10: Ground connection of the load: correct (K1) and incorrect (K2)

◦ If either

a) the ground of the load is not fed back to the terminal or
b) the ground is not safely switched but connected permanently

then fault exclusions are necessary with regard to a short-circuit with external potential in order to
be able to achieve Cat. 4 PLe according to EN ISO 13849-1:2007 or SIL3 according to IEC
61508:2010 (refer here to the overview in the chapter "Effect of options on the safety level").

◦ Option 2: Cable short-circuit fault exclusion

If solution option 1 is not feasible, the ground feedback and all-pole disconnection can be
dispensed with if the danger of feedback due to a cable short-circuit can be excluded by other
measures. These measures, which can be implemented alternatively, are described in the
following sections.

EL20xx, EL2124 15Version: 5.2

Foreword

Fig.11: Short circuit fault exclusion through protected cable laying

◦ a) Possibility 1: Load connection via separate sheathed cables

The non-safely switched potential of the standard terminal may not be conducted together with
other potential-conducting cores inside the same sheathed cable. (Fault exclusion, see EN ISO

13849-2:2013, Table D.4)

◦ b) Possibility 2: Wiring only inside the control cabinet

All loads connected to the non-safe standard terminals must be located in the same control
cabinet as the terminals. The cables are routed entirely inside the control cabinet. (Fault exclusion,

see EN ISO 13849-2:2013, Table D.4)

◦ c) Possibility 3: Dedicated earth connection per conductor

All conductors connected to the non-safe standard terminals are protected by their own earth
connection. (Fault exclusion, see EN ISO 13849-2:2013, Table D.4)

◦ d) Possibility 4: Cable permanently (fixed) installed and protected against external damage

All conductors connected to the non-safe standard terminals are permanently fixed and, e.g.
protected against external damage by a cable duct or armored pipe.

• Effect of the options on the safety level
In principle, standard terminals in safely switched potential groups are not an active part of the safety
controller. Accordingly, the safety level attained is defined only by the higher-level safety
controller, i.e. the standard terminals are not included in the calculation! However, the wiring of the
standard terminals can lead to limitations in the maximum attainable safety level.
Depending on the solution selected for the avoidance of feedback and the safety standard considered
(see Option 1 and Option 2), different maximum attainable safety levels result, which are summarized
in the following table:

Summary of safety classifications

Feedback avoidance mea­sures

Fault exclusion

Cable short-circuit

Ground feedback and all­pole disconnection

DIN EN ISO 13849-1 IEC 61508 EN 62061

max.

Cat. 4

PLe

max. SIL3 max. SIL2 *

max. SIL3

EL20xx, EL212416 Version: 5.2

Product overview, digital output terminals

2 Product overview, digital output terminals

2.1 EL2002, EL2004, EL2008 - Introduction

Fig.12: EL2002, EL2004

Fig.13: EL2008

Two-, four-, and eight-channel digital output terminals 24VDC, 0.5A

The EL200x digital output terminals relay binary control signals of the automation device in an electrically
isolated manner to the actuators of the process level. They are protected against reverse polarity at the
power contacts. The digital output terminals of the EL200x series indicate their signal state through an LED
for each channel.

EL20xx, EL2124 17Version: 5.2

Product overview, digital output terminals

CAUTION

Watchdog settings

Please refer to section "Notes for setting the watchdog [}62]".

EL20xx, EL212418 Version: 5.2

Product overview, digital output terminals

2.1.1 EL2002, EL2004, EL2008 - Technical data

Technical data EL2002 EL2004 EL2008

Number of outputs 2 4 8

Non-reactive outputs - yes

(see notice [}13])

Load type ohmic, inductive, lamp load

Nominal output voltage 24VDC (-15%/ +20%)

Switching times TON: 60µs typ.; T

Output current per channel maximum 0.5A (short-circuit proof)

Switch-off energy (inductive) max. 150mJ/channel

Current consumption from load
voltage (power contacts)

Supply voltage for electronic via the E-Bus

Current consumption via E-bus typ. 100mA typ. 100mA typ. 110mA

Electrical isolation 500V (E-bus/field voltage)

Bit width in the process image 2 output bits 4 output bits 8 output bits

Configuration no address setting, configuration via TwinCAT System Manager

Weight approx. 55g

Permissible ambient temperature
range during operation

Permissible ambient temperature
range during storage

Permissible relative humidity 95%, no condensation

Dimensions (W x H x D) approx. 15 mm x 100 mm x 70 mm (width aligned: 12 mm)

Mounting [}72]

Vibration/shock resistance according to EN 60068-2-6/EN 60068-2-27,

EMC resistance burst/ESD conforms to EN 61000-6-2 / EN 61000-6-4

Protection class IP20

Installation position variable variable

Approval CE

typ. 15mA

-25°C ... +60°C (extended temperature
range)

-40°C ... +85°C

on 35 mm mounting rail conforms to EN 60715

see also Installation instructions for terminals with increased mechanical load capacity [}74]

cULus [}150]
ATEX [}82]

: 300µs typ.

OFF

yes
(see notice [}13])

Aligned in horizontal installation position:

-25°C ... +60°C (extended temperature range)

All other installation positions, see note
[}78]:-25°C... +45°C

see note [}78]

EL20xx, EL2124 19Version: 5.2

Product overview, digital output terminals

2.1.2 EL2002 - LEDs and connection

Fig.14: EL2002

EL2002 - LEDs

LED Color Meaning

OUTPUT 1
OUTPUT 2

green off No output signal

on 24VDC output signal at the respective output

EL2002 - Connection

Terminal point Description

Name No.

Output 1 1 Output 1

+24V 2 +24V (internally connected to terminal point6 and positive power contact)

0V 3 Ground for output1 (internally connected to terminal point7 and negative power contact)

PE 4 PE (internally connected to terminal point8)

Output 2 5 Output 2

+24V 6 +24V (internally connected to terminal point2 and positive power contact)

0V 7 Ground for output2 (internally connected to terminal point3 and negative power contact)

PE 8 PE (internally connected to terminal point4)

EL20xx, EL212420 Version: 5.2

2.1.3 EL2004 - LEDs and connection

Product overview, digital output terminals

Fig.15: EL2004

EL2004 - LEDs

LED Color Meaning

OUTPUT 1- 4 green off No output signal

on 24VDC output signal at the respective output

EL2004 - Connection

Terminal point Description

Name No.

Output 1 1 Output 1

0V 2 Ground for output1 (internally connected to terminal point3, 6, 7 and negative power contact)

0V 3 Ground for output3 (internally connected to terminal point2, 6, 7 and negative power contact)

Output 3 4 Output 3

Output 2 5 Output 2

0V 6 Ground for output2 (internally connected to terminal point2, 3, 7 and negative power contact)

0V 7 Ground for output4 (internally connected to terminal point2, 3, 6 and negative power contact)

Output 4 8 Output 4

EL20xx, EL2124 21Version: 5.2

Product overview, digital output terminals

2.1.4 EL2008 - LEDs and connection

Fig.16: EL2008

EL2008 - LEDs

LED Color Meaning

OUTPUT 1- 8 green off No output signal

on 24VDC output signal at the respective output

EL2008 - Connection

Terminal point Description

Name No.

Output 1 1 Output 1

Output 3 2 Output 3

Output 5 3 Output 5

Output 7 4 Output 7

Output 2 5 Output 2

Output 4 6 Output 4

Output 6 7 Output 6

Output 8 8 Output 8

EL20xx, EL212422 Version: 5.2

2.2 EL2014

2.2.1 EL2014 - Introduction

Product overview, digital output terminals

Fig.17: EL2014

Four-channel digital output terminal, 24VDC, 0.5A, with diagnostics

The EL2014 digital output terminal connects the binary control signals from the automation device on to the
actuators at the process level with electrical isolation. The EL2014 is protected against polarity reversal and
processes load currents with outputs protected against overload and short-circuit. The integrated diagnosis
can be evaluated in the controller and is indicated by the LEDs. Overtemperature and the lack of a voltage
supply to the terminal are supplied as diagnostic information. Beyond that each channel can among other
things signal a short circuit individually. The output behavior of the channels in the case of a bus error can be
parameterized. The switching state and any error of the output are indicated by the LED. Maintenance of the
application is simplified by the diagnosis. The power contacts are continuous; reference potential of the
outputs is the 0V power contact.

The outputs are fed via the 24V power contact in the EL2014.

NOTE

Watchdog settings

Please refer to section "Notes for setting the watchdog [}62]".

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Product overview, digital output terminals

2.2.2 EL2014 - Technical data

Technical data EL2014

Connection technology 1-wire

digital outputs 4

Rated load voltage 24VDC (-15%/ +20%)

Load type ohmic, inductive, lamp load

Distributed clocks No

Max. output current 0.5A (short-circuit-proof) per channel

Short circuit current < 1A typ.

Breaking energy < 150mJ/channel

Output stage push (high-side switch)

Reverse voltage protection Yes

Switching times TON: 50µs typ., T

Supply voltage for electronic Via the power contacts

Current consumption via E-bus typ. 60mA

Recommended cycle time ≥ 200µs; with cycle times < 200µs the process data is not

updated in each cycle.

Current consumption of power contacts typ. 15mA + load

Electrical isolation 500V (E-bus/field voltage)

Bit width in process image 4-bit output and 20-bit diagnostics

Supports NoCoeStorage [}68] function

Yes

Configuration via System Manager

Conductor types solid wire, stranded wire and ferrule

Special features diagnostics via process data and LED: overtemperature,

PowerFail, short circuit (per channel)

Weight approx. 70g

Permissible ambient temperature range

0 °C ... +55 °C

during operation

Permissible ambient temperature range

-25 °C ... +85 °C

during storage

Permissible relative humidity 95%, no condensation

Dimensions (W x H x D) approx. 15mm x 100mm x 70mm (width aligned: 12mm)

Mounting [}72]

on 35mm mounting rail conforms to EN 60715

Vibration/shock resistance conforms to EN 60068-2-6 / EN 60068-2-27

EMC immunity/emission conforms to EN 61000-6-2 / EN 61000-6-4

Protection class IP20

Installation position variable

Approval CE,

IECEx

: 100µs typ.

OFF

EL20xx, EL212424 Version: 5.2

2.2.3 EL2014 - LEDs and pin assignment

Product overview, digital output terminals

Fig.18: EL2014

EL2014 - LEDs

LED Color Meaning

OUTPUT 1- 4 green off No output signal

on Output signal 24V

OUTPUT 1- 4 red on ERROR: Overcurrent / Overtemperature

Flashing red ERROR: Short circuit to 24V

OUTPUT 1- 4 red / green

alternating

EL2014 - Pin assignment

Terminal point Description

Designa­tion

Output 1 1 Output 1

0V 2 Ground for output1 (internally connected to terminal point3, 6, 7 and negative power

0V 3 Ground for output3 (internally connected to terminal point2, 6, 7 and negative power

Output 3 4 Output 3

Output 2 5 Output 2

0V 6 Ground for output2 (internally connected to terminal point2, 3, 7 and negative power

0V 7 Ground for output4 (internally connected to terminal point2, 3, 6 and negative power

Output 4 8 Output 4

No.

contact)

contact)

contact)

contact)

ERROR: Open Load

EL20xx, EL2124 25Version: 5.2

Product overview, digital output terminals

2.2.4 Overload protection

Technical data

Please note the information in the technical data regarding load type, max. output current and short
circuit current.

When switching on lamp loads, high starting currents occur that are limited by the output circuit of the
terminals (see fig. Overload current limitation).

Fig.19: Overload current limitation

Fig.20: Schematic illustration of the thermal switch-off in case of overload

In case of a long-term overload and/or short-circuit, the output is protected by the thermal switch-off of the
channel.
The output circuit of the terminal limits the current. The terminal maintains this current until important self­heating of the channel occurs.
On exceeding the upper temperature limit, the terminal switches the channel off.
The channel is switched on again after it has cooled down to below the lower temperature limit.
The output signal is clocked until the output is switched off by the controller or the short-circuit is eliminated
(see fig. Schematic illustration of the thermal switch-off in case of overload). The clock frequency depends
on the ambient temperature and the load of the other terminal channels.

EL20xx, EL212426 Version: 5.2

Product overview, digital output terminals

Short-circuit or prolonged overload on a channel leads to an increase in the device temperature. If several
channels are overloaded, this leads to a rapid increase in the device temperature. The overloaded channels
are switched off when the upper limit for the device temperature is exceeded. The channels are only
switched on again if the temperature falls below the lower limit values for both the device and the channel.
The non-overloaded channels continue operating properly.

When switching off inductive loads, high induction voltages result from interrupting the current too quickly.
These are limited by an integrated free-wheeling diode (breaking energy see Technical data). Since the
current reduces only slowly, a delayed switch-off can occur in many control applications. For example, a
valve remains open for many milliseconds. Switch-off times are realized that correspond, for instance, to the
switch-on time of the coil.

Protection against high induction voltages

To protect against voltage peaks such as can occur when switching inductive loads, we recommend
to provide suitable protective circuits (e.g. with the free-wheeling diode, RC combination or varistor)
directly at the actuator.

Fig.21: Switch-off of inductive loads

EL20xx, EL2124 27Version: 5.2

Product overview, digital output terminals

2.2.5 Operating modes and settings

2.2.5.1 Process data

Parameterization

An EL2014 is parameterized via 2 tabs in the TwinCAT System Manager: the Process Data tab (A) for the
communication-specific settings and the CoE directory (B) for the settings in the slave.

Fig.22: EL2014 “Process Data” tab

• Changes to the process data-specific settings are generally only effective after a restart of the
EtherCAT master:
Restart TwinCAT in RUN or CONFIG mode; RELOAD in CONFIG mode

• Changes to the online CoE directory

◦ are in general immediately effective

◦ are generally stored in non-volatile memory in the terminal/slave. They should be entered in the

CoE StartUp list so that the settings are accepted after a replacement of the terminal. The CoE
StartUp list is processed at each EtherCAT start and the settings are loaded into the slave.

Illustration of the process data and structural contents

The EL2014 provides three different process data for transmission:

• the diagnostics per channel “DIG Diag Inputs” (16-bit),

• the device diagnostics “DIG Inputs Device” (4-bit),

• The switching state of the outputs “DIG output” (4-bit)

EL20xx, EL212428 Version: 5.2

Product overview, digital output terminals

Fig.23: EL2014 Online illustration of the process data and structural contents in the System Manager

The plain text display of the bit meanings is particularly helpful not only in commissioning but also for linking
to the PLC program.
By right-clicking on the Status variable in the configuration tree (A), the structure can be opened for linking
(B).
Activation of the “Show Sub Variables” button (C) displays all subvariables and links to the PLC (D) in the
online view.

“Predefined PDO Assignment” selection dialog (from TwinCAT 2.11 build 1544 onwards)

The process data to be transmitted (PDO, ProcessDataObjects) can be selected by the user

• for all TwinCAT versions via the “Predefined PDO Assignment” selection dialog (see fig. “EL2014
Process Data tab” A) or

• selectively for individual PDOs (see fig. “EL2014 Process Data tab” B)

. These changes become effective after activation and an EtherCAT restart or a reload.

EL20xx, EL2124 29Version: 5.2

Product overview, digital output terminals

Fig.24: EL2014 “Process Data” tab

A Selection of the diagnostic scope via the selection dialog “Predefined PDO Assignment”
B Display of (optional) PDOs (process data objects)
C Selection of the required Sync Manager
D Display of the PDOs available for selection

Three pre-defined PDO assignments can be selected:

• Full Diagnostics:
Inputs: Selection of the PDOs 0x1A00 (diagnostics per channel) and 0x1A02 (device diagnostics). Both
the diagnostic data for each channel and the data for the device diagnostics are displayed and
transmitted.
Outputs: PDO 0x1600 (switching state of the outputs) is displayed and transmitted.

• Compact Diagnostics:
Inputs: Selection of the PDO 0x1A02 (device diagnostics). Only the diagnostic data for the device are
displayed in the System Manager and transmitted to the control system.
Outputs: PDO 0x1600 (switching state of the outputs) is displayed and transmitted.

• No Diagnostics: Neither 0x1A00 nor 0x1A02 is selected. No diagnostic data are displayed in the
System Manager and none are transmitted to the control system.
Outputs: PDO 0x1600 (switching state of the outputs) is displayed and transmitted.

Compact Diagnostics, No Diagnostics

When converting from “Full Diagnostics” to “Compact Diagnostics” or “No Diagnostics”, or when de­activating the PDO 0x1600, links already established to the deactivated objects are deleted.

EL20xx, EL212430 Version: 5.2