Beckhoff EL3423, EL3443-0013, EL3453, EL3483, EL3483-0060 Documentation
...
Documentation
EL34xx
3-phase energy and power measurement terminals
Version:
Date:
1.5
2019-09-05
Table of contents
Table of contents
1 Product overview – Power measurement terminals ..............................................................................5
2 Foreword ....................................................................................................................................................6
2.1 Notes on the documentation..............................................................................................................6
2.2 Safety instructions .............................................................................................................................7
2.3 Documentation issue status ..............................................................................................................8
2.4 Version identification of EtherCAT devices .......................................................................................9
2.4.1 Beckhoff Identification Code (BIC)................................................................................... 13
3 Product overview.....................................................................................................................................15
3.1 EL34xx – Introduction......................................................................................................................15
3.2 Technical data .................................................................................................................................19
3.3 Basic function principles ..................................................................................................................23
3.4 Current transformers .......................................................................................................................29
3.5 Start .................................................................................................................................................31
4 Basics communication ...........................................................................................................................32
4.1 EtherCAT basics..............................................................................................................................32
4.2 EtherCAT cabling – wire-bound.......................................................................................................32
4.3 General notes for setting the watchdog...........................................................................................33
4.4 EtherCAT State Machine.................................................................................................................35
4.5 CoE Interface...................................................................................................................................37
4.6 Distributed Clock .............................................................................................................................42
5 Mounting and wiring................................................................................................................................43
5.1 Instructions for ESD protection........................................................................................................43
5.2 Installation on mounting rails ...........................................................................................................44
5.3 Connection ......................................................................................................................................47
5.3.1 Connection system .......................................................................................................... 47
5.3.2 Wiring............................................................................................................................... 49
5.3.3 Shielding .......................................................................................................................... 50
5.4 Installation positions ........................................................................................................................51
5.5 Positioning of passive Terminals .....................................................................................................53
5.6 EL34xx - LEDs and connection .......................................................................................................54
6 Commissioning........................................................................................................................................63
6.1 TwinCAT Quick Start .......................................................................................................................63
6.1.1 TwinCAT2 ....................................................................................................................... 66
6.1.2 TwinCAT 3 ....................................................................................................................... 76
6.2 TwinCAT Development Environment ..............................................................................................88
6.2.1 Installation of the TwinCAT real-time driver..................................................................... 88
6.2.2 Notes regarding ESI device description........................................................................... 94
6.2.3 TwinCAT ESI Updater ..................................................................................................... 98
6.2.4 Distinction between Online and Offline............................................................................ 98
6.2.5 OFFLINE configuration creation ...................................................................................... 99
6.2.6 ONLINE configuration creation ...................................................................................... 104
6.2.7 EtherCAT subscriber configuration................................................................................ 112
6.3 General Notes - EtherCAT Slave Application................................................................................121
EL34xx 3Version: 1.5
Table of contents
6.4 Process data..................................................................................................................................129
6.4.1 Sync Manager................................................................................................................ 129
6.4.2 Settings.......................................................................................................................... 137
6.4.3 Timestamp Distributed Clocks ....................................................................................... 143
6.5 Scaling factors ...............................................................................................................................144
6.6 Notices on analog specifications ...................................................................................................145
6.6.1 Full scale value (FSV).................................................................................................... 145
6.6.2 Measuring error/ measurement deviation ...................................................................... 145
6.6.3 Temperature coefficient tK [ppm/K] ............................................................................... 146
6.6.4 Single-ended/differential typification .............................................................................. 147
6.6.5 Common-mode voltage and reference ground (based on differential inputs)................ 152
6.6.6 Dielectric strength .......................................................................................................... 152
6.6.7 Temporal aspects of analog/digital conversion.............................................................. 153
6.7 Object description and parameterization .......................................................................................157
6.7.1 Restore object................................................................................................................ 157
6.7.2 EL3423 .......................................................................................................................... 158
6.7.3 EL3443-00xx.................................................................................................................. 181
6.7.4 EL3453 .......................................................................................................................... 211
6.7.5 EL3483-00xx.................................................................................................................. 248
7 Application examples............................................................................................................................259
7.1 Power measurement on motor with 2 or 3 current transformers ...................................................260
7.2 Power measurement at a machine................................................................................................262
7.3 Power measurement in a single-phase mains network with ohmic consumers ............................264
7.4 Power measurement at a fieldbus station .....................................................................................265
7.5 Power measurement at three-phase motors controlled by a frequency converter ........................266
7.6 Power measurement including differential current measurement .................................................267
7.7 Example Function Blocks for Evaluation .......................................................................................269
8 Appendix ................................................................................................................................................273
8.1 TcEventLogger and IO ..................................................................................................................273
8.2 EtherCAT AL Status Codes...........................................................................................................276
8.3 Firmware compatibility...................................................................................................................276
8.4 Firmware Update EL/ES/EM/ELM/EPxxxx ....................................................................................278
8.4.1 Device description ESI file/XML..................................................................................... 279
8.4.2 Firmware explanation .................................................................................................... 282
8.4.3 Updating controller firmware *.efw................................................................................. 283
8.4.4 FPGA firmware *.rbf....................................................................................................... 284
8.4.5 Simultaneous updating of several EtherCAT devices.................................................... 288
8.5 Restoring the delivery state ...........................................................................................................289
8.6 Support and Service ......................................................................................................................290
EL34xx4 Version: 1.5
Product overview – Power measurement terminals
1 Product overview – Power measurement
terminals
EL3423 [}16]
3-phase power measurement terminal, Economy; 480VAC, 1A
EL3443 [}15]
3-phase power measurement terminal with extended functionality; 480VAC, 1A
EL3443-0010 [}15]
3-phase power measurement terminal with extended functionality; 480VAC, 5A
EL3443-0011 [}15]
3-phase power measurement terminal with extended functionality; 480VAC, 100mA
EL3443-0013 [}15]
3-phase power measurement terminal with extended functionality; 480VAC, 333mV
EL3453 [}18]
3-phase power measurement terminal with extended functionality; 690VAC, 5A
EL3483 [}17]
3-phase mains monitoring terminal for voltage, frequency and phase; 480V
AC
EL3483-0060 [}17]
3-phase mains monitoring terminal with voltage measurement; 480V
AC
EL34xx 5Version: 1.5
Foreword
2 Foreword
2.1 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®, EtherCATG®, EtherCATG10®, EtherCATP®, SafetyoverEtherCAT®,
TwinSAFE®, XFC®, XTS® and XPlanar® 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, EP1456722, EP2137893, DE102015105702 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.
EL34xx6 Version: 1.5
Foreword
2.2 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.
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.
EL34xx 7Version: 1.5
Foreword
2.3 Documentation issue status
Version Comment
1.4 • EL3443-0011, EL3443-0013, EL3483-0060 added
• Update structure
• Update revision status
1.3 • EL3453 added
• Update structure
• Update revision status
1.2 • Addenda chapter “TcEventLogger and IO” (Appendix)
1.1 • Chapter “Technical data” updated
1.0 • 1st public release
0.2 – 0.5 • Complements, corrections
0.1 • Provisional documentation for EL34xx
EL34xx8 Version: 1.5
Foreword
2.4 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: KKYYFFHH
KK - week of production (CW, calendar week)
YY - year of production
FF - firmware version
HH - hardware version
EL34xx 9Version: 1.5
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)
EL34xx10 Version: 1.5
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
EL34xx 11Version: 1.5
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
EL34xx12 Version: 1.5
Foreword
2.4.1 Beckhoff Identification Code (BIC)
The Beckhoff Identification Code (BIC) is increasingly being applied to Beckhoff products to uniquely identify
the product. The BIC is represented as a Data Matrix Code (DMC, code scheme ECC200), the content is
based on the ANSI standard MH10.8.2-2016.
Fig.9: BIC as data matrix code (DMC, code scheme ECC200)
The BIC will be introduced step by step across all product groups.
Depending on the product, it can be found in the following places:
• on the packaging unit
• directly on the product (if space suffices)
• on the packaging unit and the product
The BIC is machine-readable and contains information that can also be used by the customer for handling
and product management.
Each piece of information can be uniquely identified using the so-called data identifier (ANSI
MH10.8.2-2016). The data identifier is followed by a character string. Both together have a maximum length
according to the table below. If the information is shorter, it shall be replaced by spaces. The data under
positions 1-4 are always available.
The following information is contained:
EL34xx 13Version: 1.5
Foreword
Item
no.
1 Beckhoff order
2 Beckhoff
3 Article description Beckhoff article
4 Quantity Quantity in packaging
5 Batch number Optional: Year and week of
6 ID/serial number Optional: Present-day serial
7 Variant number Optional: Product variant
...
Further types of information and data identifiers are used by Beckhoff and serve internal processes.
Type of information
number
Traceability
Number (BTN)
Explanation Data identifier Number of
digits incl.
data identifier
Beckhoff order number 1P 8 1P072222
Unique serial number,
see note below
description, e.g. EL1008
unit, e.g. 1, 10, etc.
production
number system, e.g. with
safety products
number on the basis of
standard products
S 12 SBTNk4p562d7
1K 32 1KEL1809
Q 6 Q1
2P 14 2P40150318001
51S 12 51S678294104
30P 32 30PF971 ,
Example
6
2*K183
Structure of the BIC
Example of composite information from items 1 - 4 and 6. The data identifiers are marked in red for better
display:
BTN
An important component of the BIC is the Beckhoff Traceability Number (BTN, item no. 2). The BTN is a
unique serial number consisting of eight characters that will replace all other serial number systems at
Beckhoff in the long term (e.g. batch designations on IO components, previous serial number range for
safety products, etc.). The BTN will also be introduced step by step, so it may happen that the BTN is not yet
coded in the BIC
Notice
This information has been carefully prepared. However, the procedure described is constantly being further
developed. We reserve the right to revise and change procedures and documentation at any time and
without prior notice. No claims for changes can be made from the information, illustrations and descriptions
in this information.
EL34xx14 Version: 1.5
3 Product overview
3.1 EL34xx – Introduction
EL3443 | 3-phase power measurement terminal with extended functionality
Product overview
Fig.10: EL3443
The EL3443 EtherCAT Terminal enables measurement of all relevant electrical data of the mains supply and
performs simple pre-evaluations. The voltage is measured via the direct connection of L1, L2, L3 and N. The
current of the three phases L1, L2 and L3 is fed via simple current transformers.
All measured currents and voltages are available as RMS values. In the EL3443 version, the active power
and the energy consumption for each phase are calculated. The RMS values of voltage U and current I as
well as active power P, apparent power S, reactive power Q, frequency f, phase shift angle cos φ and
harmonics are available. The EL3443 offers options for comprehensive grid analysis and energy
management.
Variants:
• EL3443-0000: Version with direct current measurement up to 1 A
• EL3443-0010: Version with direct current measurement up to 5 A
• EL3443-0011: Version with direct current measurement 100 mA
• EL3443-0013: Version with direct voltage measurement 333 mV
EL34xx 15Version: 1.5
Product overview
EL3423 | 3-phase power measurement terminal, Economy
Fig.11: EL3423
The EL3423 EtherCAT Terminal enables measurement of relevant data for an efficient energy management
system. The voltage is measured internally via direct connection of L1, L2, L3 and N. The current of the three
phases L1, L2 and L3 is fed via simple current transformers. The measured energy values are available
separately as generated and accepted values. In the EL3423 version, the active power and the energy
consumption for each phase are calculated. In addition, an internally calculated power quality factor provides
information about the quality of the monitored power supply. The EL3423 offers basic functionality for mains
analysis and energy management.
EL34xx16 Version: 1.5
EL3483 | 3-phase mains monitoring terminal for voltage, frequency and phase
Product overview
Fig.12: EL3483
The EL3483 EtherCAT Terminal enables monitoring of relevant electrical data of the supply network. The
voltage is measured internally via direct connection of L1, L2, L3 and N. The internal measured values are
compared with threshold values preset by the user. The result is available as digital information in the
process image.
The EL3483 monitors the correct phase sequence L1, L2, L3, phase failure, undervoltage and overvoltage
and possible phase imbalance. An error bit is set in case of an incorrect phase sequence or phase failure. If,
for example, an imbalance or voltage fault occurs, only a warning bit is set initially. In addition, an internally
calculated power quality factor provides information about the quality of the monitored power supply. The
EL3483 offers options for simple mains analysis and network control.
The EL3483-0060 variant also outputs the current effective voltage values in the process image.
EL34xx 17Version: 1.5
Product overview
EL3453 | 3-phase power measurement terminal up to 690 V AC with extended functionality
Fig.13: EL3453
The EL3453 EtherCAT power measurement terminal is an advancement based on the EL3413. With up to
690 V AC, the voltage inputs are optimised for the direct monitoring of high-capacity generators, as in the
wind power industry, for example. No upstream voltage transformer is required.
The four current inputs are electrically isolated so that the terminal can be used in all common grounded
current transformer configurations such as 2- or 3-transformer configurations with star or delta connection
incl. neutral conductor current measurement. The EL3453 can be used for simple grid analysis up to the
63rd harmonics analysis. Alternatively, all readings can be combined in a power quality factor for simplified
diagnostics. Like all measured terminal data, the harmonic content can be read via the process data.
Quick links
Also see about this
2 Basic function principles [}23]
2 Technical data [}19]
2 Object description and parameterization [}157]
2 Process data [}129]
2 Application examples [}259]
EL34xx18 Version: 1.5
3.2 Technical data
EL3423
Technical data EL3423
Number of inputs 3 x current, 3 x voltage
Technology 3-phase power measurement
Oversampling factor –
Distributed clocks –
Update interval >10 s adjustable
Measured values energy, power, power quality factor
Measuring voltage max. 480 V AC 3~ (ULX-N: max. 277 V AC; max. 240 V DC)
Measuring current max. 1 A (AC/DC), via measuring transformers x A/1 A
Measuring error 0.5% relative to full scale value (U/I), 1% calculated values
Update time mains-synchronous
Frequency range 0 (direct current) and 12 ... 400 Hz
Electrical isolation 2500 V
Current consumption power contacts -
Current consumption E -Bus typ. 120 mA
Special features single-phase operation possible, mains monitoring functionality
Configuration via TwinCAT System Manager
Weight approx. 75 g
Dimensions (WxHxD) approx. 15mmx100mmx70mm (width aligned: 12mm)
Mounting on 35 mm mounting rail according to EN 60715
Permissible ambient temperature range
during operation
Permissible ambient temperature range
during storage
Relative humidity 95% no condensation
Vibration/shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2/EN 61000-6-4
Protect. class / installation pos. IP20/any
Approvals CE
-25°C ... +60°C (extended temperature range)
-40°C ... +85°C
Product overview
EL34xx 19Version: 1.5
Product overview
EL3443-00xx
Technical data EL3443-0000 EL3443-0010 EL3443-0011 EL3443-0013
Number of inputs 3 x current, 3 x voltage
Technology 3-phase power measurement
Oversampling factor –
Distributed clocks Optional (for determining the zero crossing time)
Activation interval one mains period (20 ms at 50 Hz)
Measured values Current, voltage, active power, reactive power, apparent power, active energy, reactive energy, apparent
Measuring voltage max. 480 V AC 3~ (ULX-N: max. 277 V AC; max 240 V DC)
Measuring current max. 1 A (AC/DC),
Measuring error 0.3% relative to the full scale value (U/I),
Threshold frequency 3000 Hz
Electrical isolation 2500 V
Update time mains-synchronous
Current consumption
power contacts
Current consumption via
E-bus
Special features Single-phase operation possible, mains monitoring functionality, precise voltage zero crossing determina-
Weight approx. 75 g
Dimensions (WxHxD) approx. 15mmx100mmx70mm (width aligned: 12mm)
Mounting on 35 mm mounting rail according to EN 60715
Permissible ambient temperature range during operation
Permissible ambient temperature range during
storage
Relative humidity 95% no condensation
Vibration/shock resistance
EMC immunity/emission conforms to EN61000-6-2/EN 61000-6-4
Protect. class / installation
pos.
Approvals CE
energy, cos φ, frequency, THD, harmonics (up to 40th harmonic), power quality factor
via measuring transformers x A/1 A
0.6% calculated values (see documentation)
–
typ. 120mA
tion
-25°C ... +60°C (extended temperature range)
-40°C ... +85°C
conforms to EN60068-2-6 / EN60068-2-27
IP20/any
max. 5 A (AC/DC),
via measuring transformers x A/5 A
max. 100 mA (AC/DC),
via measuring transformers x A/5 A
max. 333 mV (AC/DC),
via measuring transformers x A/333 mV
EL34xx20 Version: 1.5
Product overview
EL3453
Technical data EL3453
Number of inputs 4 x current, 3 x voltage
Technology 3-phase power measurement
Oversampling-factor –
Distributed-Clocks Optional (for zero crossing time determination)
Accuracy of Distributed Clocks << 1 µs
Update time with every half-wave (10 ms at 50 Hz)
Measured values Current, voltage, active power, reactive power, apparent power, active energy, reactive en-
Measuring error 0.3 % relative to full scale value (U/I)
Mains voltage
(Nominal voltage range)
Technical measuring range Voltage 520 V
Maximum permissible overvoltage max. ±736 V (peak value, ULX-N, corresponds to 520 V
Internal resolution 24 bits
Input resistance Voltage path typ. 1,5 MΩ
Nominal current range corresponding to AC:
Technical measuring range current 2.25 A (peak value, corresponds to 1.59 A
Maximum permissible overcurrent max. ±10 A peak value, corresponds to 7 A
Peak overload capacity 60 A (sinusoidal) for 1 second, upstream use of current-limiting current transformers recom-
Largest short-term deviation during a
specified electrical disturbance test
Input resistance Current path typ. 3 mΩ
Frequency range 15 … 400 Hz
Threshold frequency 4000 Hz
Electrical isolation 4500 V
Current consumption power contacts –
Current consumption E-Bus 260 mA typ.
Weight approx. 100 g
Dimensions (WxHxD) approx. 27mmx100mmx70mm (width aligned: 24mm)
Mounting on 35 mm mounting rail according to EN 60715
Permissible ambient temperature range
during operation
Permissible ambient temperature range
during storage
Relative humidity 95% no condensation
Vibration/shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2/EN 61000-6-4
Protect. class / installation pos. IP20/any
Approvals CE
ergy, apparent energy, fundamental wave power and energy, cos φ, frequency, THD, harmonics (up to 63rd harmonic), power quality factor
0.6 % calculated values (see documentation)
corresponding to AC:
400 V
(ULX-N) or 690 V
rms
(ULX-N) or 897 V
rms
common reference potential N/GND
max. time for voltages above 500 V
or 863 V
(ULx-ULy): t
rms
max. ±1270 V (peak value, ULX-ULY, corresponds to 897 V
100 mA
recommended via measuring transformer x A AC/1 A AC
;1 A
rms
(default); 5 A
rms
9.6 A (peak value, corresponds to 6.8 A
max. total current (I1+I2+I3+IN) ±20 A peak value, corresponds to 14 A
(ULX-ULY) (TN-system: 600 V
rms
(ULX-ULY)
rms
(ULX-N)
< 10s *
max
rms
rms
) or.
rms
)
rms
rms
)
rms
or
rms)
)*
rms
* per channel and
*
rms
mended
< ±0.5% of full scale value for current measurement
0°C ... +55°C
-25°C ... +85°C
*) prolonged operation above the nominal range can lead to impairment of function and/or shortening of operating life
EL34xx 21Version: 1.5
Product overview
EL3483
Technical data EL3483
Number of inputs 3 x voltage
Technology 3-phase mains monitor
Oversampling factor –
Distributed clocks –
Update interval 10 mains periods (200 ms at 50 Hz)
Measured values digital thresholds and power quality factor
Measuring voltage max. 480 V AC 3~ (ULX-N: max. 277 V AC; max. 240 V DC)
Measuring procedure True RMS, True RMS calculation
Update time mains-synchronous
Electrical isolation 2500 V
Current consumption power contacts –
Current consumption E-Bus typ. 120 mA
Special features operation as voltage monitor, frequency monitor and phase monitor also possible in single-
Monitoring function phase sequence, phase failure, phase imbalance, undervoltage/overvoltage (adjustable)
Weight approx. 75 g
Dimensions (WxHxD) approx. 15mmx100mmx70mm (width aligned: 12mm)
Mounting on 35 mm mounting rail according to EN 60715
Permissible ambient temperature range
during operation
Permissible ambient temperature range
during storage
Relative humidity 95% no condensation
Vibration/shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2/EN 61000-6-4
Protect. class / installation pos. IP20/any
Approvals CE
phase operation
-25°C ... +60°C (extended temperature range)
-40°C ... +85°C
EL34xx22 Version: 1.5
Product overview
3.3 Basic function principles
Measuring principle
The EL3443 works with 6 analog/digital converters for recording the current and voltage values of all 3
phases.
Recording and processing is synchronous and identical for the 3 phases. The signal processing for one
phase is described below. This description applies correspondingly for all 3 phases.
Fig.14: Voltage u and current i curves
RMS value calculation
The RMS value for voltage and current is calculated during the period T. The following equations are used:
u
: instantaneous voltage value
(t)
i
: instantaneous current value
(t)
n:number of measured values
The instantaneous values for current and voltage are low-pass filtered with a cut-off frequency of 2.5 kHz for
the EL3443, EL3423 and EL3483.
Active power measurement
The EL34xx measures the active power P according to the following equation
P: active power
n: number of samples
u
: instantaneous voltage value
(t)
i
: instantaneous current value
(t)
EL34xx 23Version: 1.5
Product overview
Fig.15: Power s
In the first step, the power s
curve
(t)
is calculated at each sampling instant:
(t)
The mean value is calculated over a period.
The power frequency is twice that of the corresponding voltages and currents.
Apparent power measurement
In real networks, not all consumers are purely ohmic. Phase shifts occur between current and voltage. This
does not affect the methodology for determining the RMS values of voltage and current as described above.
The situation for the active power is different: Here, the product of RMS voltage and RMS current is the
apparent power.
The active power is smaller than the apparent power.
S: apparent power
P: active power
Q: reactive power
φ: Phase shift angle
EL34xx24 Version: 1.5
Product overview
Fig.16: u, i, p curves with phase shift angle (t) (t) (t)
In this context, further parameters of the mains system and its consumers are significant:
• apparent power S
• reactive power Q
• power factor cos φ
The EL3443 determines the following values:
• RMS voltage U and RMS current I
• Active power P and active energy E
• Apparent power S and apparent energy
• Reactive power Q and reactive energy
• Power factor and cos(φ)
• Distortion factors for current THDI and voltage THD
• Calculated RMS neutral conductor current I
N
U
• Voltage imbalance
• Power quality factor (details see below)
• In "DC synchronous" mode, the distributed clock time of the voltage zero crossing is also available.
EL34xx 25Version: 1.5
Product overview
Sign for power measurement
The sign of the (fundamental wave) active power P and the power factor cos φ provides information about
the direction of the energy flow. A positive sign indicates the motor mode, a negative sign indicates
generator mode.
Furthermore, the sign of the fundamental harmonic reactive power Q provides information about the direction
of the phase shift between current and voltage. Fig. Four-quadrant representation of active/fundamental
harmonic reactive power in motor and generator mode illustrates this. In motor mode (quadrant I + IV), a
positive fundamental harmonic reactive power indicates an inductive load, a negative fundamental harmonic
reactive power indicates a capacitive load. The information about a capacitive or inductive load behavior is
also shown in the sign of the phase angle φ, which is already contained in the EL3443.
In generator mode (quadrant II & III), an inductive generator is indicated by a positive fundamental harmonic
reactive power, a capacitive generator by a negative fundamental harmonic reactive power.
Since the total reactive power is defined as the quadratic difference between apparent and active power, it
has no sign. For the total active power, signs are permitted, as described above.
Fig.17: Four-quadrant representation of active power/fundamental harmonic reactive power in motor and
generator mode
Frequency measurement
The EL34xx can measure the frequency for a voltage path input signal and a current path input signal. CoE
objects "Reference" and "Frequency Source" (F800:11 [}159] and F800:13 [}159]) can be used to set which
frequency is to be output as PDO.
Power quality factor
The EL34xx calculates a PQF (power quality factor), which reflects the quality of the voltage supply as a
simplified analog value between 1.0 and 0.
To calculate this factor, the measured values, frequency, RMS voltage, distortion factor and voltage
imbalance are calculated and combined as shown in the following diagram.
EL34xx26 Version: 1.5
Product overview
Fig.18: Representation of the power quality factor calculation
As can be seen for the time value 120, the calculation method is chosen in such a way that even very short
voltage drops cause a clear signal deflection.
The value above which the power supply is to be regarded as "sufficiently good" is strongly dependent on the
connected application. The more sensitive the application, the higher the minimum limit value of the PQF
should be.
To adapt the power quality factor to your mains supply, enter the nominal voltage and frequency in CoE
object "0xF801 PMX Total Settings PQF [}159]". This can also be done via the "Settings" tab, which
summarizes all the important terminal setting options in a user-friendly manner.
Voltage zero crossing
The EL3443 and EL3453 have the ability to determine the exact time of a voltage zero crossing. However, in
order for this to be transmitted to a higher-level controller in a meaningful manner, the controller and the
EtherCAT Terminal must have the same time base. Using distributed clocks technology, an EtherCAT
system provides such a common time base (for details see EtherCAT system description). In order to be able
to use these, the EL3443 must be in "DC synchronous" mode and the EtherCAT master must support the
corresponding function.
Once these basic requirements have been met, the EL3443 and EL3453 provide the DC time of the
penultimate zero crossing. In order to facilitate exact determination of the fundamental wave, the voltage
signal to be evaluated must first be filtered, which inevitably entails a delay. In addition to the time of the
voltage zero crossing, the EL3453 also determines the respective current zero crossings.
Statistical evaluation
In addition to the cyclic data, the EL34xx terminals also produce statistical evaluations over longer periods
(can be set in the CoE: "F803 PMX Time Settings [}162]"). By default, the "F803:12 Measurement Interval
[}162]" is set to 15 minutes. The clock available for this purpose in the terminal can not only be read out via
the CoE object "F803:13 Actual System Time [}162]", it can also be actively influenced. Depending on the
EL34xx 27Version: 1.5
Product overview
application, it may make sense to regularly synchronize the clock with an external clock. By default, the clock
is set once at system startup based on the local Windows system time, taking into account the set time zone,
usually UTC.
In addition, the interval can also be restarted manually via the "Reset Interval" output bit or directly from the
application, for example to obtain statistics on a process that varies over time.
Calculation of the neutral current
Since the EL34xx terminals have direct access to the instantaneous current values of all three phases, the
neutral current can be calculated or estimated, assuming that no current is lost to the system (in other words:
the differential current is zero). The calculated (i.e. not measured) current value is output in index "F601:13
Calculated Neutral Line Current [}188]".
Since in the worst case all measurement errors add up, the maximum measurement error is correspondingly
higher.
The additional possibility of measuring a fourth current value in the EL3453 means that either the differential
current or the neutral current can be calculated. The other current can be measured directly using the fourth
current channel. Due to the usual conditions and the corresponding measurement tolerances, however, it
makes much more sense to measure the differential current with the aid of a summation current transformer
and have the neutral conductor current calculated. Further information on this can be found in the chapter
Application examples [}259] under the section Power measurement including residual current measurement
[}267].
Harmonic calculation
The EL34xx terminals perform an internal harmonic analysis for all current and voltage channels. For this
purpose, a fundamental wave in the frequency range from 45 to 65 Hz is determined at the beginning
(separately from the system frequency). The frequency value determined for the voltage harmonics can be
read, for example, from index 99 (plus channel offset) of the variable output values and the amplitude in volts
from index 98. The same applies to the current values - see "Variable output values".
The actual harmonic measured values are output as a percentage of the fundamental wave amplitude. It
should also be noted that the zero harmonic indicates the DC component of the signal.
EL34xx28 Version: 1.5
Product overview
3.4 Current transformers
In principle, the choice of current transformer for the EL34xx is not critical. The internal resistance within the
current circuit of the EL34xx is so small that it is negligible for the calculation of the total resistances of the
current loop. The transformers should be able to produce a secondary rated current of 1A. The primary
rated current Ipn can be selected arbitrarily. The common permissible overload of 1.2xIpn is no problem for
the EL34xx, but may lead to small measuring inaccuracies.
Accuracy
Please note that the overall accuracy of the set-up consisting of EL34xx and current transformers to a large
degree depends on the accuracy class of the transformers.
No approval as a billing meter
Even an arrangement with a current transformer of class 0.5 or better is not subject to approval and
certification. The EL34xx is not an approved billing meter within the meaning of the standard for
electricity meters (DIN 43 856).
NOTE
DC currents with the EL3453
DC currents can lead to saturation of the internal current transformers and thus to measurement errors!
Current types
The EL34xx can measure any current type up to a limiting proportion of 400Hz. Since such currents are
frequently created by inverters and may contain frequencies of less than 50Hz or even a DC component,
electronic transformers should be used for such applications.
Overcurrent limiting factor FS
The overcurrent limiting factor FS of a current transformer indicates at what multiple of the primary rated
current the current transformer changes to saturation mode, in order to protect the connected measuring
instruments.
NOTE
Attention! Risk of damage to the device!
The EL34xx-xxxx must not be subjected to continuous loads that exceed the current values specified in the
technical data! In systems, in which the overcurrent limiting factors of the transformers allow higher secondary currents, additional intermediate transformers with a suitable ratio should be used.
NOTE
Attention! Risk of damage to the device!
The EL3453-xxxx must not be permanently loaded with more than I1 + I2 + I3 + IN = 20 A total current across
all channels!
Protection against dangerous touch voltages
During appropriate operation of the EL34xx with associated current transformers, no dangerous voltages
occur. The secondary voltage is in the range of a few Volts. However, the following faults may lead to
excessive voltages:
• Open current circuit of one or several transformers
• Neutral conductor cut on the voltage measurement side of the EL34xx
• General insulation fault
EL34xx 29Version: 1.5
Product overview
WARNING
WARNING Risk of electric shock!
The complete wiring of the EL34xx must be protected against accidental contact and equipped with associated warnings! The insulation should be designed for the maximum conductor voltage of the system to be
measured!
The EL34xx allows a maximum voltage of 480V for normal operating conditions. The conductor voltage on
the current side must not exceed this value! For higher voltages, an intermediate transformer stage should
be used!
An EL34xx is equipped with a protection impedance of typically 1.2MΩ on the voltage measurement side. If
the neutral conductor is not connected and only one connection on the side of the voltage measurement is
live, the resulting voltage against earth in a 3-phase system with a phase-to-phase voltage of 400VAC is
230VAC. This should also be measured on the side of the current measurement using a multimeter with an
internal resistance of 10MΩ, which does not represent an insulation fault.
Connection cable for current transformers
Please note the following minimum power values for current transformers to be connected:
Rated secondary transformer current
1 A 1 A 1 A 1 A 5 A 5 A 5 A 5 A
Cross-section 0.5 mm² 1 mm² 1.5 mm² 2.5 mm² 0.5 mm² 1 mm² 1.5 mm² 2.5 mm²
1 m 0.3 0.2 0.2 0.2 2.4 1.3 0.9 0.6
2 m 0.4 0.3 0.3 0.2 4.6 2.4 1.7 1.1
3 m 0.5 0.3 0.3 0.3 6.8 3.5 2.4 1.5
4 m 0.6 0.4 0.3 0.3 9.0 4.6 3.1 2.0
5 m 0.6 0.4 0.3 0.3 11.2 5.7 3.9 2.4
10 m 1.1 0.6 0.5 0.4 22.2 11.2 7.5 4.6
20 m 2.0 1.1 0.8 0.6 44.2 22.2 14.9 9.0
30 m 2.8 1.5 1.1 0.7 66.2 33.2 22.2 13.4
40 m 3.7 2.0 1.4 0.9 88.2 44.2 29.5 17.8
50 m 4.6 2.4 1.7 1.1 110.2 55.2 36.9 22.2
100 m 9.0 4.6 3.1 2.0 220.2 110.2 73.5 44.2
Cable length Minimum operating load in VA for current transformers with copper cables and 80°C
operating temperature
Additional measuring devices in the current circuit
Please note that the addition of additional measuring devices (e.g.ammeters) in the current circuit can lead
to a significant increase in the total apparent power.
Furthermore, connection IN of the EL34xx must represent a star point for the three secondary windings.
Additional measuring devices therefore have to be potential-free and must be wired accordingly.
EL34xx30 Version: 1.5
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