User's Manual

User Manual VC-EVCC

5.5.8.3 Start Sequence

The communication with the EVSE over V2G is started if

 VCVCCU_Inlet_MotorStatus is locked and

 VCVCCU_ChargeUnit_Mode is ChargeV2G and

 VCVCCU_PTC1_Temperature is below ChargeV2G_MaxAllowedTemperature (only if

PTC1 is activated) and

 VCVCCU_PTC2_Temperature is below ChargeV2G_MaxAllowedTemperature (only if

PTC2 is activated) and

 VCVCCU_DigitalInput_DebouncedStatus is not pressed and

 VCVCCU_S3Switch_DebouncedStatus is not pressed (only in case of Combo1) and

 VCVCCU_Vehicle_StopCharge is not pressed (only if StopCharge CAN signal is

activated) and

 VCVCCU_Vehicle_ChargeSelection is set to “PrimaryNode” and

VCVCCU_HighSideOut2_Input_DebouncedStatus is set to “Not_pressed” (only if

charging arbitration is activated) or

 VCVCCU_Vehicle_ChargeSelection is set to “SecondaryNode” and

VCVCCU_HighSideOut2_Input_DebouncedStatus is set to “Pressed” (only if charging

arbitration is activated) and

 ChargeV2G start trigger is set and

 No active DTC is detected (except DTCs of Full Bridge 12V)

Caution

At least one temperature sensor, either PTC1 or PTC2, must be activated for DC

charging.

On a change of signal VCVCCU_ChargeUnit_Mode from “not ChargeV2G” to “ChargeV2G”

the trigger to charge is set. This trigger is reset after a start of the V2G charge sequence or

on a reset of the VC-EVCC.

If the V2G communication is started according to the start sequence

Vehicle_ContactorRequest is set to Open.

5.5.8.4 SECC Discovery Protocol

The VC-EVCC sends the SECCDiscoveryReq after a communication link has been

successfully established with the EVSE.

5.5.8.4.1 Common Request Parameter

If there is no V2G TLS Activation configuration done the SECCDiscoveryReq sets the

Security parameter to 0x10 (No transport layer security).

If V2G TLS Activation configuration is done the VC-EVCC should use the configured value

for the Security parameter of the SECCDiscoveryReq.