CARLO GAVAZZI DCT1A30V10LK1EC Manuale del proprietario

DCT1

direct connection energy transducer

22/06/2023

USER MANUAL

Contents

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This manual 3

DCT1 4

Introduction 4

Description 4

Available versions 6

Evaluation certificate 6

Configuration software 6

Use 7

Maintenance mode and cable loss compensation 7

Settings 7

Reset 7

Commissioning 8

Modbus RTU 8

SML 8

Essential information 9

Cable loss 9

Easy connection 9

Temperature monitoring 9

Signature 9

Introduction 9

Modbus RTU versions 10

SML version 10

Run-hour meters 10

Maintenance and disposal 11

Troubleshooting 11

Communication problems 11

Cleaning 11

Responsibility for disposal 11

Download 11

Symbols 12

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This manual

Information property

CARLO GAVAZZI Controls SpA reserves the right to apply modifications or make improvements to the relative documentation

without the obligation of advance notice.

Safety messages

The following section describes the warnings related to user and device safety included in this document:

NOTICE: indicates obligations that if not observed may lead to damage to the device.

CAUTION! Indicates a risky situation which, if not avoided, may cause data loss.

IMPORTANT: provides essential information on completing the task that should not be neglected.

General warnings

This manual is an integral part of the product and accompanies it for its entire working life. It should be consulted for all

situations tied to configuration, use and maintenance. For this reason, it should always be accessible to operators.

NOTICE: no one is authorized to open the analyzer. This operation is reserved exclusively for CARLO GAVAZZI technical

service personnel.

Protection may be impaired if the instrument is used in a manner not specified by the manufacturer.

Service and warranty

In the event of malfunction, fault, requests for information or to purchase accessory modules, contact the CARLO GAVAZZI

branch or distributor in your country. Installation and use of analyzers other than those indicated in the provided instructions void

the warranty.

DCT1

Introduction

DCT1 is a direct connection energy transducer for DC systems up to 1000 V dc and current up to 600 A dc. Dedicated versions can

implement three different communication protocols:

lModbus RTU, or

lModbus RTU with either 256-bit or 384-bit signature, or

lSML with 385-bit signature

Furthermore, thanks to the evaluation certificate, certified DCT1 versions are suitable for installation on electric vehicle chargers

that requires Eichrecht approval.

Description

Figure 1 DCT1 front

Area Description

AVoltage/current inputs

BLEDs

CPower supply

DRS485 port

ECurrent inputs

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Figure 2 DCT1 back

Area Description

ABracket for DIN rail mounting (optional)

BHoles for back panel mounting by screw terminals (mandatory)

Available versions

Part number Voltage Current Output Signature Evaluation

certificate

DCT1A60V10LS1X 150…1000 V 6-120 (600) A Modbus RTU - -

DCT1A60V10LS2EC 150…1000 V 6-120 (600) A Modbus RTU 256 bit x

DCT1A60V10LS3EC 150…1000 V 6-120 (600) A Modbus RTU 384 bit x

DCT1A60V10LK1EC 150…1000 V 6-120 (600) A SML 384 bit x

DCT1A30V10LS1X 150…1000 V 2.5-50 (300) A Modbus RTU - -

DCT1A30V10LS2EC 150…1000 V 2.5-50 (300) A Modbus RTU 256 bit x

DCT1A30V10LS3EC 150…1000 V 2.5-50 (300) A Modbus RTU 384 bit x

DCT1A30V10LK1EC 150…1000 V 2.5-50 (300) A SML 384 bit x

Evaluation certificate

The evaluation certificate is provided by an independent notify body, which performs tests and verifications to fulfill the following

standards:

Standard Description

IEC 62052-11 Electricity metering equipment (AC) – General requirements, tests and test conditions – Part 11:

Metering equipment

IEC62052-31 Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 31:

Product safety requirements and tests

IEC62053-41* Electricity metering equipment - Particular requirements - Part 41: Static meters for DC energy

(classes 0,5 and 1)

VDE-AR-E 2418-3-100

Annex A

Electric mobility - Measuring systems for charging stations

WELMEC 7.2 Software Guide (Measuring Instruments Directive 2014/32/EU)

(*) Except for durability test

Configuration software

UCS is the DCT1 configuration software available in desktop version. It may connect to DCT1 via RS485 (Modbus RTU protocol).

UCS allows to:

lset up the unit (online or offline);

ldisplay the system state for diagnostic and setup verification purposes

Overview of the UCS functions:

lSetting up the system with DCT1 connected (online setup)

lEnter maintenance mode and set cable loss parameters (cable resistance)

lDefining the setup with DCT1 non connected, then applying it later (offline setup)

lDisplaying the main measurements

lCheck temperature on the shunt

lDisplaying overrange and overtemperature warnings

lRecording the measurements of selected variables

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Use

Maintenance mode and cable loss compensation

Maintenance mode is a special status of the meter where the cable loss parameter can be changed. To change cable loss

parameters using UCS software, follow the wizard available in the section Maintenance. To change cable loss parameters using

Modbus commands follow this procedure, referring to the Modbus protocol:

Step Action

1 Power on DCT1

2 Send Maintenance command by 5 seconds from power on.

3 Send Time sync command by 10 seconds from previous command

4 Set new Resistance value by 10 seconds from previous command

Note: in certified models (part numbers ending with “EC”), this parameter can only be changed 50 times.

Settings

The following parameters can be set using UCS or Modbus commands:

lRS485 parameters

lAddress

lBaudrate

lParity

lStop bit

lEasy connection enabling (only non-certified models)

lStart up current for run hour meters

lDevice tag

Reset

The following reset commands are available only through modbus command

lTotal meters (only non-certified models)

lPartial meters

lFactory settings

Commissioning

Modbus RTU

Modbus RTU communication port is used to transmit data to a Modbus master.

For further information about Modbus RTU communication refer to the communication protocol.

SML

For further information about SML communication refer to the communication protocol.

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Essential information

Cable loss

DCT1 implements the cable loss correction factor, considering the resistance of the cable in the measurement of voltage and

power (and therefore also energy). They are calculated as follows:

lV = Vmeas- R·lmeas

lP=Vmeas* Imeas-RImeas^2

Thus, the cable loss correction factor allows a more accurate measurement of the actual energy that flows from the charger to the

car. Cable loss can only be set up in maintenance mode, through the dedicated procedure described above.

Easy connection

Easy connection function allows ignoring current and power direction, increasing only the positive energy meter, and not affecting

the negative one when bidirectionality is not needed. The function is:

lavailable only for the non-certified version of the device

ldisabled by default and can be enabled using UCS or Modbus command.

Temperature monitoring

DCT1 monitors the temperature of the shunt constantly; through the Modbus RTU the user can control two parameters:

lthe temperature of the upper part of the shunt and

lthe temperature of the lower part of the shunt.

The shunt should never exceed 120 degrees to avoid damage to the electronic components. The temperature is measured at two

different points because the shunt can connect to conductors with different resistance.

Signature

Introduction

The signature, available in certificate versions, is a 256-bit or 384-bit data field that guarantees data authenticity. The process of

the digital signature includes three stages:

1. Generation stage: an algorithm generates a couple of correlated keys,

lthe private key, which is known only by the DCT1 itself, and

lthe public key, lasered on the front of the meter (QR code) and available through Modbus RTU

2. Authentication stage: the set of data collected by the DCT1 is signed using the private key, which asserts the authenticity of

the data,

3. Integrity stage: the data can be verified by the user only through the public key that matches the private one. Otherwise, the

system leads to an error. It guarantees the integrity of the data reported by the device.

DCT1 implements this procedure to ensure the information it reports is not corrupted by an external system because no one apart

from the DCT1 knows the private key, which is necessary to verify the authenticity of the data.

Modbus RTU versions

In EC versions with Modbus RTU port, in addition to the standard Modbus map, DCT1 provides an additional set of data, including

a 256-bit (S2 version) or a 384-bit (S3 version) signature.

Step Signature Description

S2 256-bit 256 bit ECDSA SHA 256, using curve

brainpoolP256r1

S3 384-bit 384 bit ECDSA SHA 384, using curve

brainpoolP384r1

SML version

The SML version is available only with 384-bit signature.

Run-hour meters

DCT1 provides 3 run-hour meters:

Run-hour meter Increases...

Run hour meter (kWh+) when the power is positive and the current above I_tr

Run hour meter (kWh-) when the power is positive and the current below -I_tr

Run hour meter (ON time) always when DCT1 is ON.

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Maintenance and disposal

Troubleshooting

Note: in case of other malfunctions or of any failure, please contact the CARLO GAVAZZI branch or the distributor for your country

Problem Cause Possible solution

The values are not the expected ones Electrical connections are incorrect Verify the connections

Exported energy meters (kWh-) don’t

increase

Measurement mode is set to A (default

setting)

Set Measurement mode from A to B in

UCS

Communication problems

Problem Cause Possible solution

No communication can be established

with the analyser

Communication settings are incorrect Check the set parameters

Communication connections are incorrect Verify the connections

The settings of the communication device

(third-party PLC or software) are incorrect

Check the communication with the UCS

software

Cleaning

Disconnect the power supply and loads before cleaning. To keep the device clean, use a slightly wet cloth. Never use abrasives or

solvents.

Responsibility for disposal

Dispose of the unit by separately collecting its materials and bringing them to the facilities specified by government

authorities or by local public bodies. Proper disposal and recycling will help preventing potentially harmful consequences

for the environment and for people.

Download

This manual https://gavazziautomation.com/images/PIM/MANUALS/ENG/DCT1_IM_USE.pdf

DCT1 datasheet https://gavazziautomation.com/images/PIM/DATASHEET/ENG/DCT1_DS_ENG.pdf

DCT1 installation manual https://gavazziautomation.com/images/PIM/MANUALS/ENG/DCT1_IM_INST.pdf

UCS Software https://www.gavazziautomation.com/images/PIM/OTHERSTUFF/ucs.zip

Symbols

Symbol Description

Danger

Provides essential information on completing the task that should not be

neglected

Manual symbol

Safety sign notice

The product is not to be discarded with normal household waste

Double insulation

Single phase

The indicated measurement is strongly recommended for the correct functioning

of the device

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CARLO GAVAZZI Controls SpA

via Safforze, 8

32100 Belluno (BL) Italy

www.gavazziautomation.com

[email protected]

info: +39 0437 355811

fax: +39 0437 355880

DCT1 - User manual

DCT1

Convertitore di segnale a connessione diretta

22/06/2023

MANUALE UTENTE

Indice

2 DCT1 - Manuale utente | 22/06/2023 | CARLO GAVAZZI Controls SpA

Questo manuale 3

DCT1 4

Introduzione 4

Descrizione 4

Versioni disponibili 6

Certificato di valutazione 6

Software di configurazione 6

Uso 7

Modalità Manutenzione e compensazione perdita cavo 7

Impostazioni 7

Reset 7

Messa in servizio 8

Modbus RTU 8

SML 8

Cose da sapere 9

Perdita cavo 9

Easy connection 9

Monitoraggio della temperatura 9

Firma 9

Introduzione 9

Versioni Modbus RTU. 10

Versione SML 10

Contaore 10

Manutenzione e smaltimento 11

Risoluzione problemi 11

Problemi di comunicazione 11

Pulizia 11

Smaltimento 11

Download 11

Simboli 12

DCT1 - Manuale utente | 22/06/2023 | CARLO GAVAZZI Controls SpA 3

Questo manuale

Proprietà delle informazioni

CARLO GAVAZZI Controls SpA si riserva il diritto di apportare modifiche o correzioni alla relativa documentazione senza alcun

obbligo di preavviso.

Messaggi di sicurezza

La sezione seguente descrive gli avvisi relativi alla sicurezza degli utenti e dei dispositivi presenti in questo documento:

AVVISO: indica obblighi che se non osservati possono portare al danneggiamento del dispositivo.

ATTENZIONE! Indica una situazione pericolosa che, se non evitata, può causare la perdita di dati.

IMPORTANTE: offre indicazioni essenziali al completamento del compito che non devono essere trascurate.

Avvertenze generali

Questo manuale è parte integrante del prodotto e accompagna il prodotto per tutta la sua vita. Deve essere consultato in

tutte le situazioni connesse alla configurazione, all'uso e alla manutenzione. Per tale ragione dovrebbe essere sempre

accessibile agli operatori.

AVVISO: nessuno è autorizzato ad aprire l’analizzatore. Questa operazione può essere eseguita soltanto dal personale di

assistenza tecnica di CARLO GAVAZZI.

La protezione può essere compromessa se lo strumento viene usato in un modo non specificato dal costruttore.

Servizio e garanzia

In caso di malfunzionamenti, guasti, richieste di informazioni, o acquisto di moduli accessori, contattare la filiale CARLO GAVAZZI

o il distributore nel proprio paese. L’installazione e l’uso dell’analizzatore diversi da quanto indicato nelle istruzioni fornite

invalidano la garanzia.

DCT1

Introduzione

DCT1 è un convertitore di segnale a connessione diretta per sistemi CC fino a 1000 V cc e corrente fino a 600 A cc. Specifiche

versioni possono implementare tre diversi protocolli di comunicazione:

lModbus RTU, o

lModbus RTU con firma a 256 bit o 384 bit, o

lSML con firma a 385 bit

Grazie al certificato di valutazione, inoltre, le versioni DCT1 possono essere installate su caricatori per veicoli elettrici che

richiedono l’approvazione Eichrecht.

Descrizione

Figura 1 DCT1 Fronte

Area Descrizione

AIngressi tensione/corrente

BLED

CAlimentazione

DPorta RS485

EIngressi di corrente

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Figura 2 DCT1 - Retro

Area Descrizione

AStaffa per montaggio su guida DIN (opzionale)

BFori per montaggio su pannello posteriore con morsetti a vite (obbligatori)

Versioni disponibili

Codice Tensione Corrente Uscita Firma Certificato di

valutazione

DCT1A60V10LS1X 150…1000 V 6-120 (600) A Modbus RTU - -

DCT1A60V10LS2EC 150…1000 V 6-120 (600) A Modbus RTU 256 bit x

DCT1A60V10LS3EC 150…1000 V 6-120 (600) A Modbus RTU 384 bit x

DCT1A60V10LK1EC 150…1000 V 6-120 (600) A SML 384 bit x

DCT1A30V10LS1X 150…1000 V 2.5-50 (300) A Modbus RTU - -

DCT1A30V10LS2EC 150…1000 V 2.5-50 (300) A Modbus RTU 256 bit x

DCT1A30V10LS3EC 150…1000 V 2.5-50 (300) A Modbus RTU 384 bit x

DCT1A30V10LK1EC 150…1000 V 2.5-50 (300) A SML 384 bit x

Certificato di valutazione

Il certificato di valutazione viene fornito da un organismo notificato indipendente, che esegue test e verifiche conformemente alle

seguenti norme:

Standard Descrizione

IEC 62052-11 Apparati per la misura dell'energia elettrica (CA) – Prescrizioni generali, prove e condizioni di prova

– Parte 11: Apparato di misura

IEC62052-31 Apparati per la misura dell'energia elettrica (CA) – Prescrizioni generali, prove e condizioni di prova

– Parte 31: Requisiti e prove di sicurezza del prodotto

IEC62053-41* Apparati per la misura dell'energia elettrica - Prescrizioni particolari - Parte 41: Contatori statici di

energia CC (classi 0,5 e 1)

VDE-AR-E 2418-3-100

Allegato A

Mobilità elettrica - Sistemi di misura per stazioni di ricarica

WELMEC 7.2 Guida al software (Direttiva 2014/32/UE sugli strumenti di misura)

(*) Tranne che per la prova di durata

Software di configurazione

UCS è il software per la configurazione del DCT1 disponibile nella versione desktop. Può essere collegato al DCT1 tramite RS485

(protocollo Modbus RTU). Con UCS è possibile:

lconfigurare l'unità (online o offline);

lvisualizzare lo stato del sistema a fini diagnostici e di verifica della configurazione

Panoramica delle funzioni di UCS:

lConfigurazione del sistema con DCT1 connesso (configurazione online)

lEntrare in modalità Manutenzione e impostare i parametri “perdita cavo” (resistenza del cavo)

lDefinizione del setup con DCT1 non connesso e sua successiva applicazione (setup offline)

lVisualizzare le principali misure

lControllo della temperatura massima sullo shunt

lVisualizzazione degli avvisi di superamento del range e di sovratemperatura

lRegistrazione delle misure delle variabili selezionate

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