Viridian EV EPC E32F21 User manual

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 1
EVSE Protocol Controller (EPC)
Manual
hp://viridianev.co.uk
[e-mail]

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 2
1.
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. 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 specied in this Manual and describes the delivery state
as of Aug 2019.
THIS PRODUCT IS BASED ON THE IEC 61851 AND SAE J1772 INTERNATIONAL STANDARDS

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 3
2 .
SAFETY INSTRUCTIONS
2.1 CAUTIONS & DANGERS
CAUTION: PLEASE OBSERVE THE SAFETY INSTRUCTIONS AND LEGAL NOTES
Installaon requirements vary by country, state, and jurisdicon. It is the responsibility of the installer to ensure that the
legal installaon requirements are met.
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.

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 4
3.
DESCRIPTION
3.1 EPC FEATURES
The Viridian EV EPC is a product which is intended for use in charging staons for electric vehicles.
DEVICE VERSIONS • Viridian EV EPC s have part numbers in this format:
E(1)(2)(3).
• (1) indicates the maximum charging capacity, 16, 30, 32, 40, 50, 60, 63 or 80.
• (2) is either “T”, for tethered versions, or “F”, for free cable/socket versions.
• (3) indicates the hardware revision, e.g.“32” or “33”
AREAS OF
APPLICATION & USE
• Controlling the charging procedure of electric vehicles
• For communicaon with the electric vehicle according to IEC 61851 or SAE J1772
MOUNTING Mounng onto standard rail according to DIN EN 60715
CONNECTION ELEMENTS • Relay contacts for switching the load contactor, interlock, signalling contact (depending
on model)
• Operang voltage input
• Vehicle interface
LED Display of the operang state

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 5
3.2 APPLICATION EXAMPLE
The following shows a schemac applicaon example of an electric vehicle charging post with Viridian EV EPCs. For example,
feeder opon A has a circuit breaker and an Insta contactor. Feeder opon B has a circuit breaker and a SIRIUS power
contactor.
3.3 FUNCTION DESCRIPTION
STATES OF THE CHARGING VEHICLE
STATE A: Vehicle is not connected
STATE B: Vehicle is connected/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/venlaon of the charging area is required in buildings
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
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 ashing
sequences (starng with and separated by a one-second solid white LED indicaon) and then waits for vehicle connecon
(indicated by ashing blue LED).
2. CHARGING PROCESS
The module waits for a charging cable or vehicle to be connected (state A) and connually blinks the blue LED. 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.
Viridian EV
EPC
Viridian EV
EPC

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 6
Aer interlocking, the charge-enable relay P1/P2, P3/P4 or P4/P5 is acvated (see Proximity) if the vehicle is signalling state
C. The charging process is acvated, and the LED is changed to steady-green. 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 the fault condion the charge-enable P1/P2, P3/P4, or P5/P6 and the interlock are deacvated and the LED is changed to
connually blink red.
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 does not monitor the
funconality of the forced-air venlaon.
PILOT CIRCUIT
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 module species the maximum charging current that can be called up 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.
To ensure that the charging current does not exceed the rated capacity of the AC main power supply, there are dierent
product variants which each provide dierent maximum charging current presets (Free/socket: 16A, 32A, and 63A. Tethered:
16A, 30A, 32A, 40A, 50A, 63A, 70A and 80A). The product version that is used must be designed corresponding to the
installed line protecon of the charging staon.
The 32A and 63A versions of the free cable Viridian EV EPC are capable of generang dierent enabling signals depending on
the current carrying capacity that is detected. For charging cables that have a current carrying capacity of 16A according to
IEC 61851, relay P1/P2 is acvated. The charging circuit that is acvated by this must be designed with a suitable line
protecon for 16A.For charging cables that have a current carrying capacity of 32A according to IEC 61851, relay P3/P4 is
acvated. The charging circuit that is acvated by this must be designed with a suitable line protecon for 32A.For charging
cables that have a current carrying capacity of 63A according to IEC 61851, relay P5/P6 is acvated. The charging circuit that
is acvated by this must be designed with a suitable line protecon for 63A.

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 7
INPUT CURRENT RESISTANCE INFORMATION
An Input Current (IC) resistance (or equivalent voltage) restricts the current maximum adversed by the EPC. The
resistor (or voltage) is applied across the IC and 0V terminals. It is recommended to use a resistor of 0.1%
tolerance & power rang of 63mW or greater.
The IC values are as described below:
Max Current IC Resistance (Ohms) IC Equivalent Voltage (V)
80A 9090 4.5045
79A 8060 4.4481
78A 7320 4.3990
77A 6650 4.3464
76A 6190 4.3046
75A 5620 4.2447
74A 5230 4.1974
73A 4870 4.1482
72A 4530 4.0958
71A 4220 4.0421
70A 4020 4.0040
69A 3740 3.9451
68A 3570 3.9059
67A 3320 3.8426
66A 3160 3.7981
65A 3010 3.7531
64A 2870 3.7080
63A 2670 3.6376
62A 2550 3.5915
61A 2430 3.5423
60A 2320 3.4940
59A 2210 3.4424
58A 2100 3.3871
57A 2050 3.3607
56A 1960 3.3108
55A 1870 3.2578
54A 1780 3.2014
53A 1690 3.1413
52A 1620 3.0916
51A 1580 3.0620
50A 1500 3.0000
49A 1430 2.9424
48A 1370 2.8903
47A 1330 2.8541
46A 1270 2.7974
45A 1210 2.7376
44A 1180 2.7064
43A 1130 2.6526

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 8
Input resistance less than 100-Ω, MIN, will cause the EPC to reduce the adversed current capacity to 7A for ve
seconds aer which charging and the interlock will be disabled and the EPC will enter into a forced Status A unl
input current resistance is increased.
Max Current IC Resistance (Ohms) IC Equivalent Voltage (V)
42A 1070 2.5845
41A 1050 2.5610
40A 1000 2.5000
39A 959 2.4477
38A 931 2.4107
37A 887 2.3503
36A 845 2.2900
35A 825 2.2603
34A 787 2.2020
33A 750 2.1429
32A 732 2.1132
31A 698 2.0554
30A 665 1.9970
29A 634 1.9400
28A 619 1.9117
27A 590 1.8553
26A 562 1.7990
25A 536 1.7448
24A 511 1.6909
23A 491 1.6465
22A 475 1.6102
21A 453 1.5588
20A 432 1.5084
19A 412 1.4589
18A 392 1.4080
17A 374 1.3610
16A 348 1.2908
15A 332 1.2462
14A 316 1.2006
13A 301 1.1568
12A 280 1.0938
11A 267 1.0537
10A 249 0.9968
9A 237 0.9580
8A 221 0.9050
7A 205 0.8506
6A 191 0.8018

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 9
3.4 LED DISPLAY & TROUBLESHOOTING
LED DISPLAY
The EPC has a 3-color LED for displaying operang states and fault condions. The LED can be lit in blue, green,
or red. The meaning of the individual displays is shown in the following tables:
LED DESCRIPTION OF OPERATING STATE
COLOUR STATUS
NOT LIT NOT LIT Device is not acve, switched o
• No power supply
BLUE FLASHING (1 HZ) Device is waing to be connected to an electric vehicle (Status
A)
BLUE STEADY Electric vehicle connected, electric vehicle not ready for charg-
ing (Status B)
GREEN STEADY Charging process acve (Status C)
RED STEADY Electric vehicle requires venlaon, charging deacvated
(Status D)
RED FLASHING (1 HZ) Communicaon fault detected, charging deacvated (Status F)

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 10
4.
MOUNTING
4.1 MOUNTING ONTO STANDARD RAIL
1. Clip the device (a) vercally onto the horizontal DIN rail (b).
Swing the device downward unl the unlocking slider on the DIN rail clicks into place.

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 11
5.
CONNECTION
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 responsi-
ble 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.
WARNING: VIA THE PILOT SIGNAL, THE VIRIDIAN EV EPC CHARGING CONTROLLER SPECIFIES THE MAXI-
MUM CHARGING CURRENT THAT CAN BE CALLED UP 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
WARNING: THE CONDUCTOR CROSS -SECTIONS MUST BE DESIGNED CORRESPONDING TO A
STANDARD-COMPLIANT SYSTEM CONFIGURATION.
The cables that are to be connected must be designed according to the respecve type of circuit. Failure to observe this noce
can result in injury to persons or property damage.
Depending on the device version the Viridian EV EPC charging controller is connected to the EVSE in the following
methods:
5.1 CONNECTING TERMINALS & TERMINAL ASSIGNMENT
TETHERED CABLE
“Tethered” means that the charging cable is permanently connected to the EVSE. P3-P6 are not present and relay 1 will
energize for all charging currents. Thus, the RCBO should be rated at the maximum current conguraon of the EPC.
FREE CABLE / SOCKET VERSION
“Free” means that the charging cable is not permanently connected and that the user is expected to provide their own.
Relay 3 (P5/P6) is energized for cables connected which support 63A current capacies. Otherwise, relay 2 (P3/P4) is ener-
gized for cables connected which support 32A current capacies. Otherwise, relay 1 (P1/P2) is energized when the cable
supports 16A current capacity.
NOTICE
The temperature stability of the cable used must be designed for at least for 75°C. Failure to observe this can result in
injury to persons or property damage
STRIPPED LENGTH PERMISSIBLE CONDUCTOR
CROSS-SECTIONS OF
TERMINALS
LINE TYPES ACCORDING
TO AWG
0,5 ... 2.5 mm2 20 ... 14
• with core ends prepared: 0.5 ... 2.5
mm2
• without core ends prepared: 0,5 ...
2.5 mm2
20 ... 14

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 12
EPC TERMINAL ASSIGNMENT
TETHERED VERSION FREE CABLE VERSION
Solenoid Lock Motor Lock

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 13
EPC TERMINAL ASSIGNMENT
* On tethered installaons the RCBO and contactor should be rated according to the maximum current capacity of the EPC. On
free-cable installaons the RCBO and contactor should be rated 16A.
** DC capable: For 120-370V DC on L, connect N to ground (0V).
TERMINAL DESCRIPTION
L (LINE) This is where the AC ‘live’ or ‘line’ connecon is made (90-264V @ 50/60 Hz AC)**
N (NEUTRAL) This is where the AC ‘neutral’ connecon is made (90-264V @ 50/60 Hz AC)**
0V (GROUND) This is where the ‘ground’ connecon is made**
HL (HATH LOCK) /
ML (MOTOR LOCK)
ExxF32: Provides 12V connuously to energise solenoid for hatch lock (HL)
ExxF33: This provides 12V 300mA for 500 ms to engage the lock for motorised
locks (ML)
MU (MOTOR UNLOCK) ExxF32: This provides return path for the solenoid circuit (OV)
ExxF33: This provides 12V 300mA for 500 ms to disengage the lock (MU)
HF (LOCK FEEDBACK) Reads lock feedback for motorised locks
NC (NOT CONNECTED)
P1 Relay 1 live from RCBO*
P2 Relay 1 coil on the contactor*
P3 Relay 2 live from 32A RCBO
P4 Relay 2 coil on the 32A contactor
P5 Relay 3 live from 63A RCBO
P6 Relay 3 coil on the 63A contactor
PP (PROXIMITY PIN) This connects to the PP connector on the IEC61851 EVSE connector
GN (GREEN LED) For external LED connecon for green indicaon (5V 30mA)
BL (BLUE LED) For external LED connecon for blue indicaon (5V 30mA)
RD (RED LED) For external LED connaon for red indicaon (5V 30mA)
CP (CONTROL PIN) This connects to the CP connector on the IEC61851/J1772 EVSE connector
IC (INPUT CURRENT PIN) This connects to one side of the IC resistor, switch, or dial (the other side to 0V)

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 14
5.2 230 V AC POWER SUPPLY
WIRING EXAMPLE 230 V AC
WARNING: THE EXTERNAL CONTACT BLOCKS USED MUST BE FLOATING AND
SAFELY SEPARATED FROM UNSAFE CIRCUITS.
Failure to observe this can result in injury to persons or property damage.

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 15
5.3 FUNCTIONAL GROUNDING
VEHICLE INTERFACE ACCORDING TO IEC 61851
1. Connect the terminals “CP” and “PP” (on free versions only) directly to the vehicle connector.
2. First connect the ground connecon of the vehicle interface to the 0V reference point and then route this
potenal from there
DANGER: NEVER USE THE TERMINALS OF THE VIRIDIAN EPC CHARGING CONTROLLER AS A
0V REFERENCE POINT.
Always route this externally from the device! The 0V reference point within the plant must be dimensioned
according to the ancipated current of the plant itself. The EPC connecon to the 0V is only a funconal ground.
Failure to observe this noce can result in electric shock or damage to property.
5.4 RELAY OUTPUTS
We recommend single fusing with 230/400 V 10 kA circuit breakers, 1-pin, C, 2 A, T = 70 mm
SHUTDOWN OF POWER BRANCH
According to IEC 61851, a shutdown of the power branch on compleon of the charging process within 3 s is
required. A shutdown of the power branch on transion from state C to state A is required within 100 ms. The
Viridian EPC deacvates the relay output within this requirement aer detecng the shutdown criterion.
WARNING: THE SHUTDOWN OF THE POWER BRANCH, IN PARTICULAR THE POWER
CONTACTOR, IS TO BE DESIGNED IN SUCH A WAY THAT THE ENTIRE IMPACT CHAIN DOES
NOT EXCEED THE REQUIRED 100 MS.
Failure to observe this noce can result in death or serious physical injury.

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 16
6.
SERVICE & MAINTENANCE
6.1 REPLACING THE DEVICE
MAINTENANCE
The Viridian EPC charging controller is maintenance-free.
WARNING: THERE ARE NO USER-REPLACEABLE FUSES WITHIN THE EPC
VIRIDIAN EPC REPLACEMENT
REQUIREMENT: Ensure that the plant and the device itself are de-energized.
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.
PROCEDURE:
1. Disconnect the wiring from all EPC connector terminals.
2. Disassemble the device by pulling the locking slider on the back of the device down and swivel the device away from
the DIN rail and remove it.
3. Install the new device by clipping the top locking guide onto the DIN rail and swinging it down unl the locking slider
clicks into place.
4. Reconnect the wiring.
5. Switch on the power supply for the device and the main power for the unit feeder again.
6.2 CLEANING
Cleaning of the device is not intended or permissible.

Iss 1.3 Aug 2019 EVSE Protocol Controller (EPC) Manual | Viridian EV 17
7.
DIMENSIONAL DRAWINGS