Operating manual
ELX3202 and ELX3204
2- and 4-channel analog input terminals, RTD, 16 bit, Ex i
1.2.0
2018-08-08
Version:
Date:
Table of contents
ELX3202 and ELX3204 3Version: 1.2.0
Table of contents
1 Foreword ....................................................................................................................................................5
1.1 Notes on the documentation........................................................................................................... 5
1.2 Safety instructions .......................................................................................................................... 6
1.3 Documentation Issue Status........................................................................................................... 7
1.4 Marking of ELX terminals................................................................................................................ 8
2 Product overview.....................................................................................................................................11
2.1 ELX3202 - Introduction ................................................................................................................. 11
2.2 ELX3204 - Introduction ................................................................................................................. 12
2.3 Technical data .............................................................................................................................. 13
2.4 Intended use ................................................................................................................................. 14
3 Mounting and wiring ...............................................................................................................................15
3.1 Special conditions of use for ELX terminals ................................................................................. 15
3.2 Installation notes for ELX terminals .............................................................................................. 15
3.3 Arrangement of ELX terminals within a bus terminal block .......................................................... 17
3.4 Installation position and minimum distances ................................................................................ 20
3.5 Installation of ELX terminals on mounting rails............................................................................. 21
3.6 Connection.................................................................................................................................... 22
3.6.1 Connection system...........................................................................................................22
3.6.2 Wiring...............................................................................................................................23
3.6.3 Proper line connection .....................................................................................................24
3.6.4 Shielding and potential separation...................................................................................24
3.6.5 ELX3202 - Contact assignment .......................................................................................25
3.6.6 ELX3204 - Contact assignment .......................................................................................27
4 Appendix ..................................................................................................................................................29
4.1 EtherCAT AL Status Codes .......................................................................................................... 29
4.2 UL notice....................................................................................................................................... 29
4.3 Support and Service ..................................................................................................................... 30
Table of contents
ELX3202 and ELX32044 Version: 1.2.0
Foreword
ELX3202 and ELX3204 5Version: 1.2.0
1 Foreword
1.1 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®, 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.
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.
Foreword
ELX3202 and ELX32046 Version: 1.2.0
1.2 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.
Attention
Damage to environment/equipment or data loss
Failure to follow this instruction can lead to environmental damage, equipment damage or
data loss.
Note
Tip or pointer
This symbol indicates information that contributes to better understanding.
Foreword
ELX3202 and ELX3204 7Version: 1.2.0
1.3 Documentation Issue Status
Version Comment
1.2.0 • Contact assignment extended with sensor illustration
• Chapter Arrangement of ELX terminals within a bus terminal block updated
• Chapter Marking of ELX terminals updated
• Technical data updated
1.1.0 • Chapter Arrangement of ELX terminals at the bus terminal updated
1.0.1 • Layout updated
1.0 • Chapter Mounting and wiring updated
0.3 • Technical data updated
• Chapter Mounting and wiring updated
0.2 • Chapter Intended use added
0.1 • First preliminary version
Foreword
ELX3202 and ELX32048 Version: 1.2.0
1.4 Marking of ELX terminals
Name
An ELX terminal has a 15-digit technical designation, composed of
• family key
• type
• software variant
• revision
example family type software variant revision
ELX1052-0000-0000 ELX terminal 1052: two-channel digital input terminal
for NAMUR sensors, Ex i
0000: basic type 0001
ELX9650-0000-0000 ELX terminal 9650: power supply terminal 0000: basic type 0001
Notes
• The elements mentioned above result in the technical designation. ELX1052-0000-0001 is used in
the example below.
• Of these, ELX1052-0000 is the order identifier, commonly called just ELX1052 in the "-0000" revision.
“-0001” is the EtherCAT revision.
• The order identifier is made up of
- family key (ELX)
- type (1052)
- software version (-0000)
• The Revision -0001 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 website.
The revision has been applied to the terminals on the outside, see ELX1052 with date code
3218FMFM, BTN 10000100 and Ex marking.
• The hyphen is omitted in the labeling on the side of the terminal. Example:
Name: ELX1052-0000
Label: ELX1052
0000
• The type, software version and revision are read as decimal numbers, even if they are technically
saved in hexadecimal.
Identification numbers
ELX terminals have two different identification numbers:
• date code (batch number)
• Beckhoff Traceability Number, or BTN for short (as a serial number it clearly identifies each terminal)
Datecode
The date code is an eight-digit number given by Beckhoff and printed on the ELX terminal. The date code
indicates the build version in the delivery state and thus identifies an entire production batch, but does not
distinguish between the terminals in a batch.
Structure of the date code: WWYYFFHH
WW - week of production (calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Foreword
ELX3202 and ELX3204 9Version: 1.2.0
Example with date code: 02180100:
02 - week of production 02
18 - year of production 2018
01 - firmware version 01
00 - hardware version 00
Beckhoff Traceability Number (BTN)
In addition, each ELX terminal has a unique Beckhoff Traceability Number (BTN).
Ex marking
The Ex marking can be found at the top left on the terminal:
II 3 (1) G Ex ec [ia Ga] IIC T4 Gc
II (1) D [Ex ia Da] IIIC
I (M1) [Ex ia Ma] I
IECEx BVS 18.0005X
BVS 18 ATEX E 005 X
Examples
Fig.1: ELX1052-0000 with date code 3218FMFM, BTN 10000100 and Ex marking
Foreword
ELX3202 and ELX320410 Version: 1.2.0
Fig.2: ELX9012 with date code 32180005 and Ex marking
Product overview
ELX3202 and ELX3204 11Version: 1.2.0
2 Product overview
2.1 ELX3202 - Introduction
Fig.3: ELX3202 - 2-channel analog input terminal RTD for 2, 3 and 4-wire connection, 16 bit, Exi
The ELX3202 analog input terminal allows the direct connection of RTDs located in hazardous areas
classified Zone 0/20 or 1/21. The circuitry of the ELX3202 can operate sensors with 2, 3 and 4-wire
technology. Linearization is carried out over the entire freely selectable temperature range. By default the
terminal is set to PT100 sensors with 2-wire technology. The ELX3202 terminal indicates signal state and
sensor malfunctions (e.g. wire breakage) by means of LEDs.
Product overview
ELX3202 and ELX320412 Version: 1.2.0
2.2 ELX3204 - Introduction
Fig.4: ELX3204 - 4-channel analog input terminal RTD, 2-wire connection, 16bit, Exi
The ELX3204 analog input terminal allows the direct connection of RTDs located in hazardous areas
classified Zone 0/20 or 1/21. The circuitry of the ELX3204 can operate sensors with 2-wire technology.
Linearization is carried out over the entire freely selectable temperature range. By default the terminal is set
to PT100 sensors with 2-wire technology. The ELX3204 terminal indicates signal state and sensor
malfunctions (e.g. wire breakage) by means of LEDs.
Product overview
ELX3202 and ELX3204 13Version: 1.2.0
2.3 Technical data
Technical data ELX3202-0000 ELX3204-0000
Technology temperature measurement
Sensor types Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000
resistance measurement (10Ω…4kΩ), KT(Y)
sensors
Number of inputs 2 (differential) 4 (differential)
Connection method 2-, 3-, 4-wire,
default: 2-wire
2-wire
Measuring range Pt sensors: -200…+850°C
Ni sensors: -60…+250°C
Resolution 0.1°C per digit
Measuring current < 1 mA (depending on sensor and measuring range)
Measuring error < ±0,3 % (relative to the respective full-scale value)
Internal resistance ≥ 10kΩ typ. (differential)
Input filter limit frequency typical 1kHz
Conversion time adjustable: 10…3300ms
(default: 170ms)
adjustable: 10…3300ms
(default: 270ms)
Supply voltage electronics via E-Bus (5VDC) and Power Contacts (24V
DC
Ex,
feeding by ELX9560)
Current consumption from the E-Bus typically 70mA
Current consumption from Power Contacts typically 10 mA + load (ELX9560 power supply)
Special features limit value monitoring, digital filter and characteristic
curve linearization integrated, connection method
freely configurable
Bit width in the process image 2 x 32 bit RTD input 4 x 32 bit RTD input
Electrical isolation 1500V (E-Bus/ field voltage)
Weight ca. 60g
Permissible ambient temperature range during
operation
-25°C ... + 60°C
Permissible ambient temperature range during
storage
-40°C ... + 85°C
Permissible relative humidity 95%, no condensation
Permissible air pressure
(operation, storage, transport)
800hPa to 1100hPa
(this corresponds to a height of approx. -690m to
2000m over sea level assuming an international
standard atmosphere)
Dimensions (W x H x D) app. 15mm x 100mm x 70mm (width aligned:
12mm)
Mounting on 35mm mounting rail conforms to EN 60715
Vibration/ shock resistance conforms to EN60068-2-6/ EN60068-2-27
EMC immunity/ emission conforms to EN61000-6-2/ EN61000-6-4
Protect. class IP20
Permissible installation position
See chapter Installation position and minimum
distances [}20]
Approvals CE, ATEX, IECEx
Product overview
ELX3202 and ELX320414 Version: 1.2.0
Technical data for explosion protection ELX3202-0000, ELX3204-0000
Ex marking II 3 (1) G Ex ec [ia Ga] IIC T4 Gc
II (1) D [Ex ia Da] IIIC
I (M1) [Ex ia Ma] I
Certificate numbers IECEx BVS 18.0005X
BVS 18 ATEX E 005 X
Power supply Invariable in connection with ELX9560
Field interfaces UO = 4.94V
IO = 12mA
PO = 15mW
Characteristic curve: linear
Reactance (without consideration of the
simultaneousness)
L
0
C
0
Ex ia I 100mH 1000µF
Ex ia IIA 100mH 1000µF
Ex ia IIB 100mH 1000µF
Ex ia IIC 100mH 100µF
Ex ia IIIC 100mH 1000µF
2.4 Intended use
WARNING
Endangering the safety of persons and equipment!
The ELX components may only be used for the purposes described below!
CAUTION
Observe ATEX and IECEx!
The ELX components may only be used in accordance with the ATEX directive and the
IECEx scheme!
The ELX terminals extend the field of application of the Beckhoff bus terminal system with functions for
integrating intrinsically safe field devices from hazardous areas. The intended field of application is data
acquisition and control tasks in discrete and process engineering automation, taking into account explosion
protection requirements.
The ELX terminals are protected by the type of protection "Increased safety" (Exe) according to
IEC60079-7 and must only be operated in hazardous areas of Zone2 or in non-hazardous areas.
The field interfaces of the ELX terminals achieve explosion protection through the type of protection "intrinsic
safety" (Exi) according to IEC60079-11. For this reason, only appropriately certified, intrinsically safe
devices may be connected to the ELX terminals. Observe the maximum permissible connection values for
voltages, currents and reactances. Any infringement can damage the ELX terminals and thus eliminate the
explosion protection.
The ELX terminals are open, electrical equipment for installation in lockable cabinets, enclosures or
operating rooms. Make sure that access to the equipment is only possible for authorized personnel.
CAUTION
Ensure traceability!
The buyer has to ensure the traceability of the device via the Beckhoff Traceability Number
(BTN) [}9].
Mounting and wiring
ELX3202 and ELX3204 15Version: 1.2.0
3 Mounting and wiring
3.1 Special conditions of use for ELX terminals
WARNING
Observe the special conditions of use for the intended use of Beckhoff ELX
terminals in potentially explosive areas (ATEX directive 2014/34/EU)!
• The certified components are to be installed in a suitable housing that guarantees an
ingress protection of at least IP54 in accordance with EN60079-0 and EN60529! The
prescribed environmental conditions during installation, operation and maintenance are
thereby to be taken into account! Inside the housing, pollution degree 1 and 2 are permissible.
• If the temperatures during rated operation are higher than 70°C at the feed-in points of
cables, lines or pipes, or higher than 80°C at the wire branching points, then cables
must be selected whose temperature data correspond to the actual measured temperature values!
• Observe the permissible ambient temperature range of -25 to +60°C of Beckhoff ELX
terminals!
• Measures must be taken to protect against the rated operating voltage being exceeded
by more than 40% due to short-term interference voltages! The power supply of the
ELX9560 power supply terminal must correspond to overvoltage categoryII according
to EN60664-1
• The individual terminals may only be unplugged or removed from the bus terminal system if all supply voltages have been switched off or if a non-explosive atmosphere is
ensured!
• The connections of the ELX9560 power supply terminal may only be connected or disconnected if all supply voltages have been switched off or if a non-explosive atmosphere is ensured!
• The fuses of the EL92xx power feed terminals may only be exchanged if all supply voltages have been switched off or if a non-explosive atmosphere is ensured!
• Address selectors and switches may only be adjusted if all supply voltages have been
switched off or if a non-explosive atmosphere is ensured!
3.2 Installation notes for ELX terminals
Attention
Storage, transport and mounting
• Transport and storage are permitted only in the original packaging!
• Store in a dry place, free from vibrations.
• A brand new ELX terminal with a certified build version is delivered only in a sealed carton. Therefore, check that the carton and all seals are intact before unpacking.
• Do not use the ELX terminal if
- its packaging is damaged
- the terminal is visibly damaged or
- you cannot be sure of the origin of the terminal.
• ELX terminals with a damaged packaging seal are regarded as used.
WARNING
Observe the accident prevention regulations
During mounting, commissioning, operation and maintenance, adhere to the safety regulations, accident prevention regulations and general technical rules applicable to your devices, machines and plants.
Mounting and wiring
ELX3202 and ELX320416 Version: 1.2.0
CAUTION
Observe the erection regulations
Observe the applicable erection regulations.
Attention
Protect the terminals against electrostatic discharge (ESD)
Electronic components can be destroyed by electrostatic discharge. Therefore, take the
safety measures to protect against electrostatic discharge as described in DIN EN
61340-5-1 among others. In conjunction with this, ensure that the personnel and surroundings are suitably earthed.
Attention
Do not place terminals on E-bus contacts
Do not place the ELX terminals on the E-bus contacts located on the right-hand side. The
function of the E-bus contacts can be negatively affected by damage caused by this, e.g.
scratches.
Attention
Protect the terminals against dirt
To ensure the functionality of the ELX terminals they must be protected against dirt, especially on the contact points. For this reason use only clean tools and materials.
Attention
Handling
• It is forbidden to insert conductive or non-conductive objects of any kind into the interior
of the housing (e.g. through the ventilation slots in the housing).
• Use only the openings provided in the housing front and appropriate tools to actuate the
spring-loaded terminal contacts on the front side for attaching connection cables to the
terminal; see chapter Wiring [}23].
• The opening of the housing, the removal of parts and any mechanical deformation or
machining of an ELX terminal are not permitted!
If an ELX terminal is defective or damaged it must be replaced by an equivalent terminal. Do not carry out
any repairs to the devices. For safety reasons repairs may only be carried out by the manufacturer.
Attention
Contact marking and pin assignment
The colored inscription labels above the front connection contacts shown in the illustrations
in the introduction chapter are only examples and are not part of the scope of delivery!
A clear assignment of channel and terminal designation according to the chapter contact
assignment to the actual terminal point can be made via the lasered channel numbers 1 to
8 on the left above the respective terminal point as well as via the laser image.
Observe any possible polarity dependency of connected intrinsically safe circuits!
Mounting and wiring
ELX3202 and ELX3204 17Version: 1.2.0
3.3 Arrangement of ELX terminals within a bus terminal
block
WARNING
Observe the following instructions for the arrangement of ELX terminals!
• ELX signal terminals must always be installed behind an ELX9560 power supply terminal, without exception!
• Only signal terminals of the ELX series may be installed behind an ELX9560 power
supply terminal!
• Multiple ELX9560 power supply terminals may be set in one terminal block as long as
one ELX9410 is placed before each additional ELX9560!
• An ELX9410 power supply terminal must not be mounted to the right of an ELX9560
nor to the left of any ELX signal terminal!
• The last terminal of each ELX segment is to be covered by an ELX9012 bus end cover,
unless two ELX9410 power supply terminals are installed in direct succession for continuing the same terminal segment with standard Beckhoff EtherCAT terminals (e.g. EL/
ES/EK)!
Examples for the arrangement of ELX terminals
Fig.5: Valid arrangement of the ELX terminals (right terminal block).
Fig.6: Valid arrangement - terminals that do not belong to the ELX series are set before and after the ELX
terminal segment. The separation is realized by the ELX9560 at the beginning of the ELX terminal segment
and two ELX9410 at the end of the ELX terminal segment.
Fig.7: Valid arrangement - multiple power supplies by ELX9560, each with an upstream ELX9410.
Mounting and wiring
ELX3202 and ELX320418 Version: 1.2.0
Fig.8: Valid arrangement - ELX9410 in front of an ELX9560 power supply terminal.
Fig.9: Invalid arrangement - missing ELX9560 power supply terminal.
Fig.10: Invalid arrangement - terminal that does not belong to the ELX series within the ELX terminal
segment.
Fig.11: Invalid arrangement - second ELX9560 power supply terminal within the ELX terminal segment
without an upstream ELX9410.
Mounting and wiring
ELX3202 and ELX3204 19Version: 1.2.0
Fig.12: Invalid arrangement - missing ELX9012 bus end cover.
Attention
Observe the maximum output current of the ELX9560
When configuring the ELX terminal segment, please note the maximum available output
current of the ELX9560 power supply terminal in accordance with the specified technical
data.
If required, an additional power supply terminal ELX9560 with an upstream ELX9410 connected (see mounting examples) must be installed or a completely new terminal block must
be assembled.
Mounting and wiring
ELX3202 and ELX320420 Version: 1.2.0
3.4 Installation position and minimum distances
Installation position
For the prescribed installation position the mounting rail is installed horizontally and the mating surfaces of
the ELX terminals point toward the front (see illustration below). The terminals are ventilated from below,
which enables optimum cooling of the electronics through convection. The direction indication “down”
corresponds to the direction of positive acceleration due to gravity.
Minimum distances
Observe the following minimum distances to ensure optimum convection cooling:
• above and below the ELX terminals: 35mm (required!)
• besides the bus terminal block: 20mm (recommended)
Fig.13: Installation position and minimum distances
WARNING
Observe the minimum separation distances according to IEC 60079-14!
Observe the prescribed minimum separation distances between intrinsically safe and nonintrinsically safe circuits according to IEC 60079-14.
Mounting and wiring
ELX3202 and ELX3204 21Version: 1.2.0
3.5 Installation of ELX terminals on mounting rails
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation,
disassembly or wiring of the bus terminals!
CAUTION
Danger of injury due to power contacts!
For your own protection, pay attention to careful and careful handling of the ELX terminals.
In particular, the left side mounted, sharp-edged blade contacts pose a potential risk of injury.
Assembly
Fig.14: Attaching on mounting rail
The bus coupler and bus terminals are attached to commercially available 35mm mounting rails (DIN rails
according to EN60715) by applying slight pressure:
1. First attach the fieldbus coupler to the mounting rail.
2. The bus terminals are now attached on the right-hand side of the fieldbus coupler. Join the components with tongue and groove and push the terminals against the mounting rail, until the lock clicks
onto the mounting rail.
If the terminals are clipped onto the mounting rail first and then pushed together without tongue and
groove, the connection will not be operational! When correctly assembled, no significant gap should
be visible between the housings.
Note
Fixing of mounting rails
The locking mechanism of the terminals and couplers extends to the profile of the mounting
rail. At the installation, the locking mechanism of the components must not come into conflict with the fixing bolts of the mounting rail. To mount the mounting rails with a height of
7.5mm under the terminals and couplers, you should use flat mounting connections (e.g.
countersunk screws or blind rivets).
Mounting and wiring
ELX3202 and ELX320422 Version: 1.2.0
Disassembly
Fig.15: Disassembling of terminal
Each terminal is secured by a lock on the mounting rail, which must be released for disassembly:
1. Pull the terminal by its orange-colored lugs approximately 1cm away from the mounting rail. In doing
so for this terminal the mounting rail lock is released automatically and you can pull the terminal out of
the bus terminal block easily without excessive force.
2. Grasp the released terminal with thumb and index finger simultaneous at the upper and lower grooved
housing surfaces and pull the terminal out of the bus terminal block.
Connections within a bus terminal block
The electric connections between the Bus Coupler and the Bus Terminals are automatically realized by
joining the components:
• The six spring contacts of the E-Bus deal with the transfer of the data and the supply of the Bus
Terminal electronics.
• The power contacts deal with the supply for the field electronics and thus represent a supply rail within
the bus terminal block.
The power contacts of the ELX terminals are supplied by the ELX9560 power terminal. This interrupts
the power contacts and thus represents the beginning of a new supply rail.
Note
Power Contacts
During the design of a bus terminal block, the pin assignment of the individual Bus Terminals must be taken account of, since some types (e.g. analog Bus Terminals or digital 4channel Bus Terminals) do not or not fully loop through the power contacts.
3.6 Connection
3.6.1 Connection system
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation,
disassembly or wiring of the bus terminals!
Mounting and wiring
ELX3202 and ELX3204 23Version: 1.2.0
Overview
The terminals of ELXxxxx series with standard wiring include electronics and connection level in a single
enclosure.
Standard wiring (ELXxxxx)
Fig.16: Standard wiring
The terminals of ELXxxxx series feature integrated screwless spring force technology for fast and simple
assembly.
Ultrasonically "bonded" (ultrasonically welded) conductors
Note
Ultrasonically “bonded" conductors
It is also possible to connect the Standard Terminals with ultrasonically "bonded" (ultrasonically welded) conductors. In this case, please note the tables concerning the wire-size
width below!
3.6.2 Wiring
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation,
disassembly or wiring of the Bus Terminals!
Terminals for standard wiring ELXxxxx
Fig.17: Connecting a cable on a terminal point
Mounting and wiring
ELX3202 and ELX320424 Version: 1.2.0
Up to eight terminal points enable the connection of solid or finely stranded cables to the Bus Terminal. The
terminal points are implemented in spring force technology. Connect the cables as follows:
1. Open a terminal point by pushing a screwdriver straight against the stop into the square opening
above the terminal point. Do not turn the screwdriver or move it alternately (don't toggle).
2. The wire can now be inserted into the round terminal opening without any force.
3. The terminal point closes automatically when the pressure is released, holding the wire securely and
permanently.
Observe the requirements for connecting cables and cross sections according to IEC 60079-7 and IEC
60079-11. See the following tables for the suitable wire size width.
Power supply terminal ELX9560
Wire size width (single core wires) 0.14 ... 1.5mm
2
Wire size width (fine-wire conductors) 0.14 ... 1.5mm
2
Wire size width (conductors with a wire end sleeve) 0.14 ... 1.0mm
2
Wire stripping length 8 ... 9mm
Attention
Maximum screwdriver width for ELX9560
Use a screwdriver with a maximum width of 2mm to wire the ELX9560 power supply terminal. Wider screwdrivers can damage the terminal points.
All other ELX terminals ELXxxxx
Wire size width (single core wires) 0.08 ... 2.5mm
2
Wire size width (fine-wire conductors) 0.08 ... 2.5mm
2
Wire size width (conductors with a wire end sleeve) 0.14 ... 1.5mm
2
Wire stripping length 8 ... 9mm
3.6.3 Proper line connection
Always connect only one wire per terminal point.
When using fine-wire conductors it is recommended to connect them with wire end sleeves in order to
establish a safe, conductive connection.
In addition, make sure that the pin assignment is correct to prevent damage to the ELX terminals and the
connected devices.
3.6.4 Shielding and potential separation
Note
Shielding
Encoder, analog sensors and actors should always be connected with shielded, twisted
paired wires.
CAUTION
Observe installation requirements in areas of potentially explosive atmospheres!
During installation, observe the requirements for cables, shielding and earth potential
equalization in areas of potentially explosive atmospheres according to IEC60079-11,
IEC60079-14 and IEC60079-25.
WARNING
Ensure potential separation of the 24V Ex busbar!
In any case, make sure that the galvanic isolation made by the ELX9560 between the 24V
Ex busbar (power contacts +24VEx and 0VEx) and other system potentials (if applicable
also functional or protective earths) is not removed.
Mounting and wiring
ELX3202 and ELX3204 25Version: 1.2.0
3.6.5 ELX3202 - Contact assignment
Fig.18: ELX3202 - Contact assignment
Terminal point Description
Name No.
+RL1 1 Channel 1: Input +RL1 (RTD current source)
+R1 2 Channel 1: Input +R1 (RTD voltage measurement)
+RL2 3 Channel 2: Input +RL2 (RTD current source)
+R2 4 Channel 2: Input +R2 (RTD voltage measurement)
-RL1 5 Channel 1: Input -RL1 (RTD current sink)
-R1 6 Channel 1: Input -R1 (RTD voltage measurement)
-RL2 7 Channel 2: Input: -RL2 (RTD current sink)
-R2 8 Channel 2: Input -R2 (RTD voltage measurement)
Mounting and wiring
ELX3202 and ELX320426 Version: 1.2.0
LED displays
LED Color Meaning
Run green This LED indicates the terminal's operating state:
off State of the EtherCAT State Machine: INIT = initialization of the terminal or
BOOTSTRAP = function for firmware updates of the terminal
flashing State of the EtherCAT State Machine: PREOP = function for mailbox
communication and different standard-settings set
single flash State of the EtherCAT State Machine: SAFEOP = verification of the Sync
Manager channels and the distributed clocks.
Outputs remain in safe state
on State of the EtherCAT State Machine: OP = normal operating state; mailbox
and process data communication is possible
Error Ch1 red The resistance is in the invalid range of the characteristic curve.
Possible short circuit or wire breakage at channel1.
Error Ch2 red The resistance is in the invalid range of the characteristic curve.
Possible short circuit or wire breakage at channel2.
Mounting and wiring
ELX3202 and ELX3204 27Version: 1.2.0
3.6.6 ELX3204 - Contact assignment
Fig.19: ELX3204 - Contact assignment
Terminal point Description
Name No.
+R1 1 Channel 1: Input +R1 (RTD voltage measurement, RTD current source)
+R2 2 Channel 2: Input +R2 (RTD voltage measurement, RTD current source)
+R3 3 Channel 3: Input +R3 (RTD voltage measurement, RTD current source)
+R4 4 Channel 4: Input +R4 (RTD voltage measurement, RTD current source)
-R1 5 Channel 1: Input -R1 (RTD voltage measurement, RTD current sink)
-R2 6 Channel 2: Input -R2 (RTD voltage measurement, RTD current sink)
-R3 7 Channel 3: Input -R3 (RTD voltage measurement, RTD current sink)
-R4 8 Channel 4: Input -R4 (RTD voltage measurement, RTD current sink)
Mounting and wiring
ELX3202 and ELX320428 Version: 1.2.0
LED displays
LED Color Meaning
Run green This LED indicates the terminal's operating state:
off State of the EtherCAT State Machine: INIT = initialization of the terminal
or BOOTSTRAP = function for firmware updates of the terminal
flashing State of the EtherCAT State Machine: PREOP = function for mailbox
communication and different standard-settings set
single flash State of the EtherCAT State Machine: SAFEOP = verification of the
Sync Manager channels and the distributed clocks.
Outputs remain in safe state
on State of the EtherCAT State Machine: OP = normal operating state;
mailbox and process data communication is possible
Error Ch1 red The resistance is in the invalid range of the characteristic curve.
Possible short circuit or wire breakage at channel1.
Error Ch2 red The resistance is in the invalid range of the characteristic curve.
Possible short circuit or wire breakage at channel2.
Error Ch3 red The resistance is in the invalid range of the characteristic curve.
Possible short circuit or wire breakage at channel3.
Error Ch4 red The resistance is in the invalid range of the characteristic curve.
Possible short circuit or wire breakage at channel4.
Appendix
ELX3202 and ELX3204 29Version: 1.2.0
4 Appendix
4.1 EtherCAT AL Status Codes
For detailed information please refer to the EtherCAT system description.
4.2 UL notice
Application
Beckhoff EtherCAT modules are intended for use with Beckhoff’s UL Listed EtherCAT System only.
Examination
For cULus examination, the Beckhoff I/O System has only been investigated for risk of fire
and electrical shock (in accordance with UL508 and CSAC22.2 No.142).
For devices with Ethernet connectors
Not for connection to telecommunication circuits.
Basic principles
Two UL certificates are met in the Beckhoff EtherCAT product range, depending upon the components:
1. UL certification according to UL508. Devices with this kind of certification are marked by this sign:
2. UL certification according to UL508 with limited power consumption. The current consumed by the device is limited to a max. possible current consumption of 4A. Devices with this kind of certification are
marked by this sign:
Almost all current EtherCAT products (as at 2010/05) are UL certified without restrictions.
Application
If terminals certified with restrictions are used, then the current consumption at 24VDC must be limited
accordingly by means of supply
• from an isolated source protected by a fuse of max. 4A (according to UL248) or
• from a voltage supply complying with NECclass2.
A voltage source complying with NECclass2 may not be connected in series or parallel with another
NECclass2compliant voltage supply!
These requirements apply to the supply of all EtherCAT bus couplers, power adaptor terminals, Bus
Terminals and their power contacts.
Appendix
ELX3202 and ELX320430 Version: 1.2.0
4.3 Support and Service
Beckhoff and their partners around the world offer comprehensive support and service, making available fast
and competent assistance with all questions related to Beckhoff products and system solutions.
Beckhoff's branch offices and representatives
Please contact your Beckhoff branch office or representative for local support and service on Beckhoff
products!
The addresses of Beckhoff's branch offices and representatives round the world can be found on her internet
pages:
http://www.beckhoff.com
You will also find further documentation for Beckhoff components there.
Beckhoff Headquarters
Beckhoff Automation GmbH & Co. KG
Huelshorstweg 20
33415 Verl
Germany
Phone: +49(0)5246/963-0
Fax: +49(0)5246/963-198
e-mail: info@beckhoff.com
Beckhoff Support
Support offers you comprehensive technical assistance, helping you not only with the application of
individual Beckhoff products, but also with other, wide-ranging services:
• support
• design, programming and commissioning of complex automation systems
• and extensive training program for Beckhoff system components
Hotline: +49(0)5246/963-157
Fax: +49(0)5246/963-9157
e-mail: support@beckhoff.com
Beckhoff Service
The Beckhoff Service Center supports you in all matters of after-sales service:
• on-site service
• repair service
• spare parts service
• hotline service
Hotline: +49(0)5246/963-460
Fax: +49(0)5246/963-479
e-mail: service@beckhoff.com
Table of figures
ELX3202 and ELX3204 31Version: 1.2.0
Table of figures
Fig. 1 ELX1052-0000 with date code 3218FMFM, BTN 10000100 and Ex marking............................. 9
Fig. 2 ELX9012 with date code 32180005 and Ex marking................................................................... 10
Fig. 3 ELX3202 - 2-channel analog input terminal RTD for 2, 3 and 4-wire connection, 16 bit, Exi..... 11
Fig. 4 ELX3204 - 4-channel analog input terminal RTD, 2-wire connection, 16bit, Exi ....................... 12
Fig. 5 Valid arrangement of the ELX terminals (right terminal block). ................................................... 17
Fig. 6 Valid arrangement - terminals that do not belong to the ELX series are set before and after the
ELX terminal segment. The separation is realized by the ELX9560 at the beginning of the ELX
terminal segment and two ELX9410 at the end of the ELX terminal segment. ........................... 17
Fig. 7 Valid arrangement - multiple power supplies by ELX9560, each with an upstream ELX9410. ... 17
Fig. 8 Valid arrangement - ELX9410 in front of an ELX9560 power supply terminal............................. 18
Fig. 9 Invalid arrangement - missing ELX9560 power supply terminal.................................................. 18
Fig. 10 Invalid arrangement - terminal that does not belong to the ELX series within the ELX terminal
segment. ...................................................................................................................................... 18
Fig. 11 Invalid arrangement - second ELX9560 power supply terminal within the ELX terminal seg-
ment without an upstream ELX9410............................................................................................ 18
Fig. 12 Invalid arrangement - missing ELX9012 bus end cover. ............................................................. 19
Fig. 13 Installation position and minimum distances ............................................................................... 20
Fig. 14 Attaching on mounting rail ........................................................................................................... 21
Fig. 15 Disassembling of terminal............................................................................................................ 22
Fig. 16 Standard wiring............................................................................................................................ 23
Fig. 17 Connecting a cable on a terminal point ....................................................................................... 23
Fig. 18 ELX3202 - Contact assignment ................................................................................................... 25
Fig. 19 ELX3204 - Contact assignment ................................................................................................... 27
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