EVSE Viridian EV EPC20 Series Manuale utente

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 1

EVSE Protocol Controller 2.0 (EPC 2.0)

hp://viridianev.co.uk

info@viridianev.co.uk

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 2

Introducon

1.1 ABOUT THIS DOCUMENTATION

PURPOSE OF THIS DOCUMENTATION

This Manual contains all the informaon you need for commissioning and using the Viridian EV EPC 2.0. They are intended for

use by electrically skilled persons who commission the device.

SCOPE OF VALIDITY OF THIS DOCUMENTATION

This documentaon is valid for all components of the Viridian EV EPC 2.0 specied in this Manual and describes the delivery

state as of Feb 2020.

THIS PRODUCT IS BASED ON THE IEC 61851 AND SAE J1772 INTERNATIONAL STANDARDS

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 3

2 .

SAFETY INSTRUCTIONS

2.1 CAUTIONS & DANGERS

CAUTION: PLEASE OBSERVE THE SAFETY INSTRUCTIONS AND LEGAL NOTES

Installaon requirements for electrical equipment and EVSE vary by country and jurisdicon. It is the responsibility of the

installer/user of this product to ensure that legal installaon requirements are met. In the UK, this product must be

installed and used by a competent and qualied person who will ensure the equipment adheres to the IEE wiring

regulaons BS7671 (18th Edion or later) and current Building regulaons. This device has safety features that enable

and help with meeng these regulaons.

DANGER: VOLTAGE HAZARDS

Contact with live components can result in serious injuries. Disconnect the system and all devices from the power supply

before starng work.

2.2 FUSES

WARNING: UNDESIRABLE HEAT GENERATION OR FIRE DUE TO INADEQUATE FUSING.

The internal fuses are designed only to protect the device itself. The system installer and plant operator are responsible

for the necessary line protecon.

The relay outputs are not fused within the device. Without appropriate protecon of the relay outputs, overloading can

cause undesirable heat generaon or even re. The relay outputs are to be fused externally by the plant constructor.

2.3 REPAIRS

Repairs are not permied. Defecve devices must be disposed of in compliance with environmental requirements.

WARNING: DANGERS ASSOCIATED WITH UNAUTHORIZED OPENING OF THE DEVICE

Unauthorized opening of the device might place the user in danger or result in substanal damage to property.

CAUTION: INVALIDATION OF THE MANUFACTURER’S WARRANTY DUE TO

UNAUTHORIZED ALTERATIONS TO THE DEVICE

Alteraons to the devices are not permied. Failure to observe this requirement shall constute a revocaon of the

manufacturer’s warranty.

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 4

DESCRIPTION

3.1 OVERVIEW OF THE EPC 2.0

The EPC 2.0 is a DIN rail mounted control module for IEC 61851 compable EV charge points. Key features include RCM support and

PEN Loss detecon, helping charge point manufacturers and installers meet regulaons in a cost-eecve way and protect against

electric shock in the unlikely event of an earth and neutral fault problem.

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 5

DEVICE VERSIONS • The Viridian EV EPC 2.0 has part numbers in this format:

EPC20(1)(2)(3). i.e. EPC20 P10-R

• (1) indicates the model B = Basic P = Plus

• (2) indicates the revision number

• (3) Presence of an R indicates supplied with RCM

SUPPLIED PARTS EPC 2.0 module, Current Transformer (CT), RCM (when selected; oponal part)

AREAS OF

APPLICATION & USE

• Controlling the charging procedure of electric vehicles in accordance with IEC61851

mode 3

• For communicaon with the electric vehicle according to IEC62196-2 or SAE J1172

MOUNTING Mounng onto standard rail according to DIN EN 60715

CONNECTION ELEMENTS • Mains input (207—257V @ 50Hz AC)

• 2 Relay contacts (230V AC ) for switching the load and Aux contactor

• Solenoid or motor interlock drive for socket (Conguraon dependant)

• Current Transformer (PEN Loss detecon on single phase systems)

• Vehicle interface / Signalling contacts

• Operang current input (IC) - voltage or resistance

• External LED support

INTEGRATED LED Displays the operang state of EVSE

Operang Temp -25 to 50 C

Congurable opons • Ability to restrict charging current ( IC ) up to system maximum.

• Tethered or Socket outlets

• 16A or 32A maximum operang currents depending on ed system contactor

• Solenoid or motor locking systems

• Interlock Feedback for status of motorised locks

• RCM support enable / disable

• Pen Loss enable / disable

• Lock engaged polarity

3.2 EPC 2.0 FEATURES

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 6

3.3 EPC 2.0 PEN LOSS DETECTION SYSTEM

In the event of a fault in the PEN conductor supplying the property the Protecve Earth terminal may become live and as such

carry potenally dangerous current.

For single phase charge points only* the EPC 2.0 can protect the user in the event of an open PEN conductor in the power

distribuon network. In the event of a fault in the PEN conductor the EPC 2.0 will disconnect all conductors including the pro-

tecve earth conductor.

The device measures earth current (using supplied current transformer (CT)) and voltage (between Live and Neutral); either

measurement outside of the factory set limits will cause a fault condion which will cause the EPC 2.0 to open the EV and Aux

contactors, isolang the EV and disconnecng all conductors including the PE conductor, meeng minimum requirements in

BS 7671: 2018 amendment 1, 722.411.4.1 (iv) and (v).

A single pole isolaon contactor with a 240V coil rated for the nominal EVSE load is required to disconnect and isolate PE for

this funconality to work.

Details regarding the connecons of the EPC 2.0 and the CT can be found in the Terminal Assignment table (6.2) and the Wir-

ing example (6.3)

Important note: Single phase & 3 phase installaons

Full PEN Loss detecon funconality in the EPC 2.0 has been designed in accordance with UK specicaons (BS 7671: 2018

amendment 1, 722.411.4.1 (iv) and (v)) for single phase charge points only*.

The EPC 2.0 complies with paragraph BS 7671:2018 amendment 1, secon 722.411.4.1 paragraph (iv) for single phase installa-

ons by monitoring the supply voltage. If this is outside of limits (207 - 254 V) the device will open both relay contacts thereby

isolang the charge point socket from the mains network, including the earth path.

Addionally, the device complies with paragraph (v) of the above secon as the PEN Loss CT is designed to sense this fault

current in the earth conductor and open both relay contacts thereby also isolang the charge points socket from the mains

network, including the earth path.

It is up to the user creang the EVSE using an EPC 2.0 to understand if it is a single phase or three phase installaon and apply

the requirements of BS 7671: 2018 amendment 1 accordingly.

It is up to the user creang the EVSE using an EPC 2.0 to know and understand their local regulaons outside the UK and

whether this device suitably protects against an open PEN conductor situaon in the distribuon network.

*If the PEN Loss CT is sll connected and PEN Loss is enabled, the device will sll open the contactors and isolate the charge

point socket for the 3 phase charge points (meeng paragraph (v) of the above specicaon), however full PEN Loss detecon

has been designed to meet both paragraphs (iv) and (v) of the above specicaon and not all live conductors are being meas-

ured in a 3 phase charge point by the EPC 2.0.

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 7

3.4 RCM OPERATION

The EPC 2.0 has a residual current monitor funcon to monitor currents in the system which protects the system in the event

of fault current being detected. The unit is Factory set to trigger at 6mA DC or greater . If this condion arises the EPC 2.0 will

disable charging and indicate a fault condion ( see table below ) .

In order to reset the fault state, the EV and the EVSE need to be disconnected and reconnected.

If the fault current is sll present then the device will return to a fault state and disable charging. If this persists then consult

troubleshoong guide.

Important note: RCM not installed

If no RCM device is being used in the EVSE then this funconality needs to be disabled as per the conguraon table in this

document, reference secon ( 4.1. )

3.5 SELECTABLE CHARGING CURRENT ( IC )

Selecng charging current on installaon

The EPC 2.0 can be congured to restrict the maximum current available to charge the EV on installaon of the device . This

is achieved by a ng a resistor greater than 100 Ω ( See 4.2 for more informaon ) . If the IC resistor is not ed the EPC 2.0

will default to the maximum current available either 16A or 32A as selected via the DIP switch ,reference secon 4.1

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 8

3.6 FUNCTION APPLICATION EXAMPLE

The following shows a schemac applicaon example of an electric vehicle charge point / EVSE assembled with a EPC 2.0. For

example, applicaon opon A shows a Type A RCD, an MCB and the 16A / 32A contactor. Applicaon example B shows a

RCBO (Type A, C curve) and a 16A / 32A contactor.

In all applicaons / installaons the local wiring regulaons must be adhered too.

STATES OF THE CHARGING VEHICLE

STATE A: Vehicle is not connected

STATE B: Vehicle connected but not ready to receive energy.

STATE C: Vehicle is connected/ready to receive energy/no venlaon of the charging area is required in buildings

STATE D: Vehicle is connected/ready to receive energy but venlaon of the charging area is required in buildings

(funcon not supported by EPC 2.0)

STATE E: Short-circuit/power supply disconnected from electric vehicle/electricity is not available/other power supply

problem

STATE F: EVSE is not available/other power supply problem

Opon A

Opon B

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 9

3.7 SEQUENCE OF CHARGING PROCESS

1. INITIALIZATION

Aer the operang voltage is applied, the module carries out inializaons and funcon tests indicated by two LED pulsing

sequences and then waits for vehicle connecon (indicated by pulsing blue LED).

2. CHARGING PROCESS

The module waits for a charging cable or vehicle to be connected (state A) indicated by the blue LED connually pulsing . If an

approved

connecng cable has been connected (see Proximity) and state B is indicated by the vehicle, the module changes the LED to

be steady-blue and acvates the interlock. A connuing ashing White LED will indicate that the lock is obstructed if the

system has been congured for an interlock.

Aer interlocking, the charge-enable relays are acvated if the vehicle is signalling state C. The charging process is acvated,

and the LED is changed to steady-green (LED indicaon : A colour combinaon is used to indicate the rmware version . The

maximum congured charging current is indicated by a series of white pulses ) If state D is indicated (venlaon required)

then charging and interlock are deacvated as the EPC does not provide a fan-enable mechanism, and the LED is changed to

steady-red.

In a fault condion the charge-enable relay and the interlock are deacvated and the LED is changed to connually pulse red.

A slowly pulsing RED LED will require no manual intervenon to restart charging from a fault condion, once the fault has

been idened and cleared . A rapidly pulsing RED LED will require manual intervenon.

VENTILATION REQUIREMENT

WARNING: SUFFOCATION HAZARD WHEN CHARGING INDOORS

Without venlaon, a danger of suocaon can arise due to gas build-up with some baery types when charging indoors. If

the charging process takes place indoors, forced-air venlaon should be installed. The Viridian EV EPC 2.0 does not monitor

the funconality of the forced-air venlaon systems and so are not compable.

CONTROL PILOT

The pilot circuit is used for the bi-direconal exchange of informaon between the charging staon and the vehicle. Via this

signal, the charging staon indicates to the vehicle the maximum permied charging current which the vehicle can call up. The

operaonal readiness of the charging staon is also indicated. Via this signal, the vehicle indicates to the charging staon its

current state of charging readiness.

WARNING

Via the pilot signal, the EPC 2.0 module species the maximum charging current that can be drawn by the vehicle. This

specied current must be consistent with the line protecon congured for the charging device and the rest of the plant

conguraon. Failure to observe this noce can result in injury to persons or property damage.

PROXIMITY

With free cable installaons the charging device detects the maximum current carrying capacity of the connected charging

cable via the proximity signal. The acvated charging output coded in the pilot signal is no greater than the current carrying

capacity of the charging cable.

The EPC 2.0 is designed to operate with available charging current signals of 16A and 32 A ,depending on the current carrying

capacity of the cable that is detected. Note : The adversed current from the EVSE maybe downgraded depending on the

current carrying capacity of the cable detected. . The charging circuit that is acvated must be designed with a suitable line

protecon for 16A for the installed system .For charging cables that have a current carrying capacity of 32A according to IEC

61851 the system must be designed with a suitable line protecon .

Issue 1.2 May 2020 EVSE Protocol Controller 2.0 (EPC 2.0) | Viridian EV 10

DESCRIPTION OF THE 10 WAY DIP SWITCH

POSI-

TION

OFF ( POSTION UP ) ↑

Supplied Default Setting

ON ( DOWN POSTION)↓

116A Maximum Current 32A Maximum Current

2Free Socket Outlet Tethered Cable Outlet

3Motorised Locking Mecha-

nism

Solenoid Locking Mechanism

4Lock feedback signal Ena-

bled

Lock feedback signal Disabled

5Hella Actuator Phoenix Actuator

6Residual current monitoring

Enabled

Residual current monitoring

disabled

7PEN Loss for single phase sys-

tems enabled

PEN Loss for single phase sys-

tems disabled *

8Not Used Not Used

9Not Used Not Used

10 Not Used Not Used

Conguraon

4.1 DIP SWITCH

Congurable features are selected on a 10-way DIP switch located on the top of the EPC 2.0 .The device will be provided

with the default conguraon of the DIP switch ( see table ) . The Unit will be supplied with the push t lid to t aer

the correct selecon for 16A or 32A installaon.

This lid can carefully be removed in future by using a small at blade screwdriver , placing this at the base of the slot and

pushing into the device to press in each clips unl it releases upward .

* If disabled it will disable charge point if voltage on monitored phase is outside of correct range but will

self-recover. If this persists then contact electricity supplier.

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