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Signal contacts and charging sequences
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7. Switch-off
C2 Vehicle reduces charging current in accordance with the battery management sys -
tem (BMS)
C2 Charging station reduces charging current down to a charging current of <1 A
C2 Vehicle cancels charging enabled (vehicle no longer in the “Ready to charge” state)
C2 Vehicle opens its DC contactors if charging current <1 A
C2 Charging station discharges DC intermediate circuit
C2 Charging station switches to the “EVSE_NotReady” state

B2 Vehicle switches to status B2 by opening switch S2
B2 Vehicle unlocks vehicle charging connector in the vehicle charging inlet if voltage
between DC+ and DC- <60 V
B2 Vehicle stops digital communication with the charging station

B1 Three to five seconds after digital communication is stopped, the charging station
switches the PWM off
8. Disconnect vehicle
from charging station

A1 Vehicle charging connector disconnected from vehicle
1
Vehicle status in accordance with IEC 61851-1
Table 5 - 5 Phases of the DC charging sequence in a Combined Charging System (CCS)
Phase Status
1
Status change and actions
For other sequences required in special situations (e.g., emergency switch-off), refer to
standards IEC 61851 - 23, Annex CC, and DIN SPEC 70121.