CLC IEC/TS 61851-3-4:2023

Electric vehicles conductive charging system - Part 3-4: DC EV supply equipment where protection relies on double or reinforced insulation - General definitions and requirements for CANopen communication

This part of IEC 61851-3 series (in a first step as Technical Specification for three-year period) together with part 1 of IEC 61851-3, applies to communication for the conductive transfer of electric power between the supply network and a light electric road vehicle or a removable RESS or traction-battery of a light electric road vehicle, with a rated supply voltage up to 480 V a.c. or up to 400 V d.c. and a rated ìoutputî voltage up to 480 V a.c. or up to 200 V d.c.. Energy management system for control of power transfer between battery systems and voltage converter units specifies the communication for all devices that may take part in energy management control. The basic application profile for energy management systems consists of the following parts: Part 3-4: General definitions for communication; Part 3-5: Pre-defined communication parameters and general application objects; Part 3-6: Voltage converter unit communication; Part 3-7: Battery system communication.

Konduktive Ladesysteme für Elektrofahrzeuge - Teil 3-4: Gleichstrom-Versorgungseinrichtungen für Elektrofahrzeuge mit Schutzwirkung durch doppelte oder verstärkte Isolierung - Allgemeine Definitionen und Anforderungen für CANopen Kommunikation

Système de charge conductive pour véhicules électriques - Partie 3-4 : Exigences relatives aux véhicules électriques légers - Définitions générales relatives à la communication

Sistemi za napajanje električnih vozil - 3-4. del: Oprema za napajanje električnih vozil z enosmernim tokom, kjer varnost zagotavlja dvojna ali ojačena izolacija - Splošne definicije in zahteve za komunikacijo CANopen (IEC/TS 61851-3-4:2023)

Ta del skupine standardov IEC 61851-3 (v prvem koraku kot tehnične specifikacije za triletno obdobje) skupaj s 1. delom standarda IEC 61851-3 se uporablja za komuniciranje za konduktivni prenos električne energije med električnim omrežjem in lahkim električnim cestnim vozilom ali odstranjenim sistemom za shranjevanje energije z možnostjo ponovnega polnjenja ali pogonsko baterijo lahkega električnega vozila z nazivno izmenično napetostjo napajanja do 480 V ali enosmerno napetostjo do 400 V in nazivno izhodno izmenično napetostjo do 480 V oziroma izhodno enosmerno napetostjo do 200 V.
Sistem za upravljanje z energijo za nadzor prenosa moči med baterijskimi sistemi in pretvorniki napetosti določa komunikacijo med vsemi napravami, ki so lahko vključene v nadzor upravljanja z energijo.
Osnovni profil uporabe za sisteme za upravljanje z energijo vključuje naslednje dele:
3-4. del: Splošne definicije za komunikacijo;   3-5. del: Predhodno opredeljeni parametri komunikacije in splošni aplikacijski objekti; 3-6. del: Komunikacija pretvornika napetosti;
  3-7. del: Komunikacija baterijskega sistema.

General Information

• Status: Published
• Publication Date: 21-Dec-2023
• ICS: 43.120 - Electric road vehicles
• Technical Committee: CLC/TC 69X - Electrical systems for electric road vehicles
• Drafting Committee: IEC/TC 69 - IEC_TC_69
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 22-Dec-2023
• Completion Date: 22-Dec-2023
• Directive: 2014/94/EU - Directive 2014/94/EU of The European Parliament and of The Council of 22 October 2014 on the deployment of alternative fuels infrastructure
• Mandate: M/533 - [C(2015)1330] Standardisation request addressed to CEN, CENELEC and ETSI in support of the implementation of the Directive 2014/94/EU on the deployment of alternative fuels infrastructure
• Ref Project: SIST-TS CLC IEC/TS 61851-3-4:2024 - Electric vehicles conductive charging system - Part 3-4: DC EV supply equipment where protection relies on double or reinforced insulation - General definitions and requirements for CANopen communication (IEC/TS 61851-3-4:2023)

Overview

CLC IEC/TS 61851-3-4:2023 (IEC/TS 61851-3-4:2023) defines general definitions and CANopen communication requirements for DC EV supply equipment where protection relies on double or reinforced insulation. It is part of the IEC 61851-3 series and targets conductive charging communication for light electric road vehicles, removable RESS or traction batteries, and associated devices. The scope covers systems with rated supply voltages up to 480 V a.c. or 400 V d.c. and output voltages up to 480 V a.c. or 200 V d.c. This Technical Specification sets the baseline for energy management systems (EMS) that coordinate power transfer among battery systems, voltage converter units and other EMS participants using CANopen.

Key Topics and Requirements

• CANopen physical and data-layer rules: medium access unit, transmission rates, node-ID assignment and network topology for DC EV supply environments.
• Error handling and emergency messaging: standardized error fields, enhancements to emergency message handling and additional error codes for EMS communications.
• Operating principles and use cases: activation, connection/disconnection behaviour, sleep modes, and EMS operation states for EV charging configurations (Types A–F).
• Virtual EMS architecture and objects: definitions for General Application Objects (GAO), Energy Management System Controller (EMSC), Voltage Converter Units (VCU), Battery Systems and optional Security/Manufacturer-specific units.
• Device modelling: finite state automata (FSA) for EMS and related devices to ensure predictable state transitions.
• CANopen services & features: Network Management (NMT), SDO/PDO communication patterns, bootloader and application update procedures, and error management for firmware handling.
• Analogue/value representation: standardized formats for electrical and mechanical analogue values (current, voltage, power, temperature, time, etc.) to ensure consistent monitoring and control.

Applications and Practical Value

• Ensures interoperability between DC EV supply equipment, battery systems and voltage converters using CANopen.
• Guides manufacturers in designing double/reinforced-insulated DC charging equipment that meets common communication and safety expectations.
• Supports integrators and system architects implementing energy management systems for fleet charging, microgrids, and vehicle-to-infrastructure setups.
• Aids test laboratories and certification bodies in verifying CANopen compliance and robust error handling in EV charging contexts.
• Useful for OEMs, charging-station vendors, BMS and VCU suppliers, and EMS software developers focused on safety, reliability and seamless charge coordination.

Related Standards

• IEC/TS 61851-3-1, 3-5, 3-6, 3-7 (other parts of the DC EV supply equipment series)
• IEC/TS 62196-4 (DC connectors)
• ISO 11898 (CAN) and CiA CANopen profiles (e.g., CiA 302 series)
• EN 50325-4 (CANopen industrial communications)

Keywords: IEC/TS 61851-3-4:2023, CLC IEC/TS 61851-3-4, CANopen communication, DC EV supply equipment, energy management system, electric vehicles conductive charging, double reinforced insulation.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2024
Sistemi za napajanje električnih vozil - 3-4. del: Oprema za napajanje električnih
vozil z enosmernim tokom, kjer varnost zagotavlja dvojna ali ojačena izolacija -
Splošne definicije in zahteve za komunikacijo CANopen (IEC/TS 61851-3-4:2023)
Electric vehicles conductive charging system - Part 3-4: DC EV supply equipment where
protection relies on double or reinforced insulation - General definitions and
requirements for CANopen communication (IEC/TS 61851-3-4:2023)
Konduktive Ladesysteme für Elektrofahrzeuge - Teil 3-4: Gleichstrom-
Versorgungseinrichtungen für Elektrofahrzeuge mit Schutzwirkung durch doppelte oder
verstärkte Isolierung – Allgemeine Definitionen und Anforderungen für CANopen
Kommunikation (IEC/TS 61851-3-4:2023)
Système de charge conductive pour véhicules électriques - Partie 3-4 : Exigences
relatives aux véhicules électriques légers - Définitions générales relatives à la
communication (IEC/TS 61851-3-4:2023)
Ta slovenski standard je istoveten z: CLC IEC/TS 61851-3-4:2023
ICS:
43.120 Električna cestna vozila Electric road vehicles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION CLC IEC/TS 61851-3-4

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION December 2023
ICS 43.120
English Version
Electric vehicles conductive charging system - Part 3-4: DC EV
supply equipment where protection relies on double or reinforced
insulation - General definitions and requirements for CANopen
communication
(IEC/TS 61851-3-4:2023)
Système de charge conductive pour véhicules électriques - Konduktive Ladesysteme für Elektrofahrzeuge - Teil 3-4:
Partie 3-4 : Exigences relatives aux véhicules électriques Gleichstrom-Versorgungseinrichtungen für
légers - Définitions générales relatives à la communication Elektrofahrzeuge mit Schutzwirkung durch doppelte oder
(IEC/TS 61851-3-4:2023) verstärkte Isolierung - Allgemeine Definitionen und
Anforderungen für CANopen Kommunikation
(IEC/TS 61851-3-4:2023)
This Technical Specification was approved by CENELEC on 2023-12-04.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC IEC/TS 61851-3-4:2023 E

European foreword
This document (CLC IEC/TS 61851-3-4:2023) consists of the text of IEC/TS 61851-3-4:2023,
prepared by IEC/TC 69 "Electrical power/energy transfer systems for electrically propelled road
vehicles and industrial trucks”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Technical Specification IEC/TS 61851-3-4:2023 was approved by
CENELEC as a European Technical Specification without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60309 series NOTE Approved as EN IEC 60309 series
IEC 60364-7-722:2018 NOTE Approved as HD 60364-7-722:2018
IEC 60990:2016 NOTE Approved as EN 60990:2016 (not modified)
ISO 18246:2023 NOTE Approved as EN ISO 18246:2023 (not modified)

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60309 series Plugs, fixed or portable socket-outlets and EN IEC 60309 series
appliance inlets for industrial purposes
IEC 60364 series Low-voltage electrical installations HD 60364 series
IEC 60884 series Plugs and socket-outlets for household and - -
similar purposes
IEC 61850 series Communication networks and systems for EN 61850 series
power utility automation
IEC/TS 61851-3-1 2023 Electric vehicles conductive charging system - -
- Part 3-1: DC EV supply equipment where
protection relies on double or reinforced
insulation - General rules and requirements
for stationary equipment
IEC/TS 61851-3-5 2023 Electric vehicles conductive charging system - -
- Part 3-5: DC EV supply equipment where
protection relies on double or reinforced
insulation - Pre-defined communication
parameters and general application objects
IEC/TS 61851-3-6 2023 Electric vehicles conductive charging system - -
- Part 3-6: DC EV supply equipment where
protection relies on double or reinforced
insulation - Voltage converter unit
communication
IEC/TS 61851-3-7 2023 Electric vehicles conductive charging system - -
- Part 3-7: DC EV supply equipment where
protection relies on double or reinforced
insulation - Battery system communication
IEC/TS 62196-4 2022 Plugs, socket-outlets, vehicle connectors and - -
vehicles inlet - Conductive charging of
electric vehicles - Part 4: Dimensional
compatibility and interchangeability
requirements for DC pin and contact-tube
accessories for class II or class III
applications
Publication Year Title EN/HD Year
ISO/IEC 646 1991 Information technology - ISO 7-bit coded - -
character set for information interchange
ISO/IEC 14443 series Cards and security devices for personal - -
identification - Contactless proximity objects
ISO/IEC 18092 2013 Information technology - Telecommunications - -
and information exchange between systems -
Near Field Communication - Interface and
Protocol (NFCIP-1)
ISO 11898-2 2016 Road vehicles - Controller area network - -
(CAN) - Part 2: High-speed medium access
unit
ISO 11898-5 2007 Road vehicles - Controller area network - -
(CAN) - Part 5: High-speed medium access
unit with low-power mode
ISO 11898-6 2013 Road vehicles - Controller area network - -
(CAN) - Part 6: High-speed medium access
unit with selective wake-up functionality
CiA 302-1 2009 CANopen additional application layer - -
functions - Part 1: General definitions
CiA 302-2 2009 CANopen additional application layer - -
functions - Part 2: Network management
CiA 302-3 2010 CANopen additional application layer - -
functions - Part 3: Configuration and program
download
CiA 305 2013 CANopen layer setting services (LSS) and - -
protocols
Industrial communications subsystem based EN 50325-4 2002
on ISO 11898 (CAN) for controller-device
interfaces - Part 4: CANopen
Secondary lithium batteries for light EV EN 50604-1 2016
(electric vehicle) applications - Part 1:
General safety requirements and test
methods
IEC TS 61851-3-4 ®
Edition 1.0 2023-07
TECHNICAL
SPECIFICATION
colour
inside
Electric vehicles conductive charging system –

Part 3-4: DC EV supply equipment where protection relies on double or

reinforced insulation – General definitions and requirements for CANopen

communication
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 43.120 ISBN 978-2-8322-5730-2

– 2 – IEC TS 61851-3-4:2023  IEC 2023
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 13
4 Symbols and abbreviated terms . 16
5 General conditions for the tests . 17
6 Physical layer specification . 18
6.1 General . 18
6.2 Medium access unit . 18
6.3 Transmission rates. 18
6.4 Node-ID assignment . 18
6.5 Network topology . 19
6.6 Gateway . 19
7 Error handling . 19
7.1 General . 19
7.2 Enhancement of the emergency message handling . 19
7.3 Pre-defined error field . 21
7.4 Error behaviour . 21
7.5 Additional error codes . 22
8 Operating principles . 23
8.1 General . 23
8.2 Functional description . 23
8.2.1 General . 23
8.2.2 Voltages, currents, loads . 23
8.2.3 Activating of the energy management system (EMS) . 24
8.2.4 Connection and disconnection of devices . 25
8.2.5 "Sleep" . 25
8.3 Use case specific definitions for EMSs in EVs . 25
8.3.1 General . 25
8.3.2 EMS in operation . 25
8.3.3 Design and implementation for EV supply system configurations Types
"A-F" . 26
8.4 Virtual architecture of the EMS . 31
8.4.1 General . 31
8.4.2 Standard virtual EMS control network . 31
8.4.3 General application object (GAO) . 32
8.4.4 Energy management system controller (EMSC) . 33
8.4.5 Voltage converter unit (VCU) . 33
8.4.6 Battery system . 33
8.4.7 Security unit (optional) . 34
8.4.8 Manufacturer-specific virtual devices (optional) . 34
9 Finite state automaton (device modelling) . 34
9.1 General . 34
9.2 EMS finite state automaton (FSA) . 35
9.2.1 State definition . 35

IEC TS 61851-3-4:2023  IEC 2023 – 3 –
9.2.2 Transitions of the EMS FSA . 37
10 General CANopen communication capabilities in EMSs . 38
10.1 Network management . 38
10.2 SDO communication . 39
10.3 PDO communication . 39
10.4 Bootloader . 39
10.4.1 General . 39
10.4.2 Bootloader mode . 39
10.4.3 Starting and stopping the application program . 40
10.4.4 Application program file format . 41
10.4.5 Error management . 45
11 Representation of analogue values . 45
11.1 General . 45
11.2 Representation of generic analogue values . 45
11.2.1 Percent . 45
11.2.2 Temperature . 45
11.2.3 Temperature rate (∆T) . 45
11.2.4 Time (days) . 45
11.2.5 Time (minutes) . 45
11.2.6 Time (milliseconds) . 45
11.3 Electrical-related analogue value representation . 46
11.3.1 Current . 46
11.3.2 Electric charge. 46
11.3.3 Electric charge (for statistical purposes) . 46
11.3.4 Electric charge rate . 46
11.3.5 Energy power (for statistical purposes) . 46
11.3.6 Energy power . 46
11.3.7 Frequency . 46
11.3.8 Power . 46
11.3.9 Power factor . 46
11.3.10 Resistor . 46
11.3.11 Voltage . 46
11.4 Mechanical-related analogue value representation (optional) . 46
11.4.1 Angle/circular position . 46
11.4.2 Distance (long) . 47
11.4.3 Distance (short) . 47
11.4.4 Force . 47
11.4.5 Rotational speed. 47
11.4.6 Revolutions . 47
11.4.7 Torque . 47
11.4.8 Velocity . 47
11.5 Optical-related analogue value representation – Colour/brightness . 47
Annex A (informative) System architecture and use cases . 48
A.1 General . 48
A.2 Application profile for EMS . 48
A.2.1 General . 48
A.2.2 Maximum possible devices on a virtual EMS control network . 48
A.2.3 Minimum virtual EMS control network . 49
A.3 General application object. 50

– 4 – IEC TS 61851-3-4:2023  IEC 2023
A.3.1 General . 50
A.3.2 Motor control unit . 50
A.3.3 Load monitoring unit . 50
A.3.4 Generator unit . 51
A.3.5 Load unit . 51
A.3.6 HMI unit . 51
A.3.7 Sensor unit . 51
A.3.8 Gateway . 51
A.3.9 IEC 61850 gateway . 51
A.4 Use cases (informative) . 51
A.4.1 EV use case . 51
A.4.2 Stationary use case . 52
Annex B (normative) Energy management system controller (EMSC) . 55
B.1 General . 55
B.2 Object dictionary . 55
B.2.1 General . 55
B.2.2 NMT communication objects . 55
B.2.3 Produced application objects . 56
B.2.4 Consumed application objects . 59
B.3 Tasks of an EMSC . 64
B.3.1 General . 64
B.3.2 Start-up . 65
B.3.3 Compatibility check . 65
B.3.4 Releasing devices . 65
B.3.5 "Sleep"- mode. 66
Annex C (informative) Implementation guidelines . 67
C.1 General . 67
C.2 Timings . 67
C.2.1 General . 67
C.2.2 Start up . 67
C.3 Master handling . 67
C.3.1 General . 67
C.3.2 Detecting master availability . 67
C.3.3 EMSC SDO handling . 67
C.4 Design of voltage converter unit communication for EVs . 68
C.4.1 Use cases. 68
C.4.2 Recommended power transfer protocol . 69
Annex D (normative) Power management via "sleep" . 79
D.1 General . 79
D.2 Operation principles . 79
D.2.1 General . 79
D.2.2 Pre-conditions . 79
D.2.3 Finite state automaton for power management . 79
D.3 Services . 81
D.3.1 General . 81
D.3.2 Service "query sleep objection" and "sleep objection" . 81
D.3.3 Service Set "sleep" . 82
D.3.4 Service "wake-up" . 83
D.3.5 Service "request sleep" . 84

IEC TS 61851-3-4:2023  IEC 2023 – 5 –
D.4 Protocols . 84
D.4.1 Protocol "query sleep objection" . 84
D.4.2 Protocol "sleep objection" . 84
D.4.3 Protocol set "sleep" . 85
D.4.4 Protocol "wake-up" . 85
D.4.5 Protocol "request sleep" . 87
D.5 Power management timing – Sleep/wake-up . 87
D.6 Miscellaneous timing values . 88
Annex E (informative) Handling of multiple energy loads/sources. 89
E.1 General . 89
E.2 Consecutive power transfer to battery systems without power loss. 89
E.3 Parallel charge and discharge . 90
Annex F (normative) Communication connector . 92
F.1 General . 92
F.2 Configuration of 4-II for configuration type B . 92
F.3 NFC description . 93
F.4 Communication connector . 98
Annex G (informative) Orientation . 100
G.1 General . 100
G.2 Orientation definitions for pedal driven EVs. 100
G.3 Orientations for non- pedal driven EV applications . 100
Bibliography . 102

Figure 1 – Protocol emergency write for energy management applications . 20
Figure 2 – EV supply system cConfiguration type A . 27
Figure 3 – EV supply system configuration type B . 28
Figure 4 – EV supply system cConfiguration type C . 29
Figure 5 – EV supply system configuration type D . 29
Figure 6 – EV supply sytem configuration type E . 30
Figure 7 – EV supply system configuration type F . 30
Figure 8 – Conversion device for configuration type C . 31
Figure 9 – Virtual standard architecture of the EMS . 32
Figure 10 – Remote and local control . 35
Figure 11 – EMS FSA . 37
Figure 12 – Flow chart for switching between bootloader mode and application . 40
Figure 13 – Application program . 41
Figure 14 – Program identifier 1 . 41
Figure 15 – Program identifier 2 . 41
Figure 16 – Program identifier 3 . 42
Figure 17 – Program identifier 4 . 42
Figure 18 – Program identifier 5 . 42
Figure 19 – Example for program identifier handling . 43
Figure 20 – Object structure. 47
Figure A.1 – Virtual maximum architecture of the EMS. 49
Figure A.2 – Virtual minimum architecture of the EMS . 50

– 6 – IEC TS 61851-3-4:2023  IEC 2023
Figure A.3 – EMS application in EV . 52
Figure A.4 – Typically stationary photovoltaic hybrid off-grid application . 53
Figure A.5 – Use case according to self-consumption regulation . 54
Figure B.1 – Value structure . 56
Figure B.2 – Object structure . 57
Figure B.3 – Value structure . 58
Figure B.4 – Value structure . 64
Figure C.1 – Voltage converter unit used as power supply for EV . 69
Figure C.2 – Sequence diagram for startup of the connection . 70
Figure C.3 – Sequence diagram "New device connected" . 71
Figure C.4 – Preparation of the power transfer procedure . 72
Figure C.5 – Configuration of limitations . 75
Figure C.6 – Start up procedure for initiate power transfer . 76
Figure C.7 – Power transfer in progress . 78
Figure D.1 – Power management FSA . 80
Figure D.2 – "Sleep" inhibited by objection . 82
Figure D.3 – Transition into "sleep" without objection . 82
Figure D.4 – Execution of "query sleep objection" service for a device in "sleep" . 83
Figure D.5 – Execution of "wake-up" service . 83
Figure D.6 – Execution of "request sleep" service . 84
Figure D.7 – Protocol "query sleep objection" . 84
Figure D.8 – Protocol "sleep objection" . 85
Figure D.9 – Protocol set "sleep" . 85
Figure D.10 – Protocol "wake-up" . 86
Figure D.11 – Protocol "wake-up" . 86
Figure D.12 – Protocol "request sleep" . 87
Figure D.13 – "Query sleep objection" protocol timing . 87
Figure F.1 – Configuration 4-II communication only . 93
Figure F.2 – Position of NFC . 95
Figure F.3 – Latching device . 96
Figure F.4 – Position of NFC in vehicle inlet and socket-outlet according to IEC TS
62169-4:2019 sheet 4-II . 97
Figure F.5 – Overview . 97
Figure F.6 – Communication connector details . 98
Figure F.7 – Overview of communication connector . 99
Figure G.1 – Orientation definition for EVs . 100
Figure G.2 – Position of axes relative to orientation . 101

Table 1 – DRI EV supply equipment and external device node-ID assignment . 19
Table 2 – Value definition for EMCY message . 21
Table 3 – Additional error codes . 22
Table 4 – State description . 36
Table 5 – Events and actions . 38

IEC TS 61851-3-4:2023  IEC 2023 – 7 –
Table 6 – Value definition . 44
Table B.1 – Value definition . 56
Table B.2 – Object description . 57
Table B.3 – Entry description . 57
Table B.4 – Value definition EV type . 57
Table B.5 – Value definition speed . 58
Table B.6 – Object description . 58
Table B.7 – Entry description . 58
Table B.8 – Value definition . 59
Table B.9 – Object description . 59
Table B.10 – Entry description . 59
Table B.11 – Value definition . 60
Table B.12 – Object description . 60
Table B.13 – Entry description . 61
Table B.14 – Value definition . 62
Table B.15 – Object description . 62
Table B.16 – Entry description . 63
Table B.17 – Value definition . 64
Table B.18 – Object description . 64
Table B.19 – Entry description . 64
Table B.20 – Compatibility check . 65
Table C.1 – Data transfer from battery system to VCU's . 73
Table C.2 – Additional parameters relevant for power transfer process . 73
Table C.3 – Additional parameters relevant for power transfer process . 73
Table C.4 – Most important parameters for limiting . 74
Table C.5 – Limit calculation for battery systems . 75
Table C.6 – Data transfer from battery to VCUs . 77
Table C.7 – Data transfer from VCUs to the battery . 77
Table D.1 – State description . 80
Table D.2 – Events and actions . 81
Table D.3 – Timing values for "query sleep objection" . 87
Table D.4 – Timing values for "sleep" wait time . 88
Table D.5 – Miscellaneous timing values . 88
Table E.1 – Example for battery system switching procedure . 90
Table E.2 – Example for battery system handling in parallel. 91
Table F.1 – NDEF message . 94
Table F.2 – NFC description . 94

– 8 – IEC TS 61851-3-4:2023  IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC VEHICLES CONDUCTIVE CHARGING SYSTEM –

Part 3-4: DC EV supply equipment where protection relies
on double or reinforced insulation – General definitions and
requirements for CANopen communication

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maxim
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