EV Charge Control Basic
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PHOENIX CONTACT 106377_en_04
Figure 5-5 Typical curve of signal CP
B Charging stopped The charging process can be aborted via the charging station or
via the vehicle.
Switching off via the charging station: The charging station
switches off the PWM signal and indicates the end of the charging
process. The vehicle opens S2 and the charging controller discon-
nects the charging contactor again and with it the voltage from the
charging cable. If S2 is not opened within 3 seconds after switch-
ing off the PWM signal, the charging process is stopped, indepen-
dent of the vehicle status.
Switching off via the vehicle: The vehicle disconnects resistor R3
again via S2. The vehicle stops the charging process and opens
S2. The charging controller disconnects the charging contactor
again and with it the voltage from the charging cable.
9 V
A Vehicle disconnected
from the charging station
12 V
Table 5-4 Charging sequence according to the vehicle status
Vehicle
status
Status Description Signal CP
CP
12V
9V
6V
3V
0V
-12V
A
B1/B2
C
A
B1/B2
Table 5-5 Controlling the maximum charging current that may be taken according to IEC 61851-1
Evaluation of nominal pulse duty
factors by the vehicle
Maximum current according to IEC 61851-1 that the vehicle is permitted to
take
Pulse duty factor < 3% Charging is not permitted.
3% ≤ pulse duty factor ≤ 7% Indicates that digital communication between vehicle and charging station is being
used to specify the charging parameters.
Charging is only permitted with digital communication.
5% pulse duty factor should be used if the Control Pilot is used for digital communi-
cation.
7% ≤ pulse duty factor ≤ 8% Charging is not permitted.
8% ≤ pulse duty factor < 10% 6 A
10% ≤ pulse duty factor ≤ 85% Available current = (% of pulse duty factor) x 0.6 A
85% < pulse duty factor ≤ 96% Available current = (% of pulse duty factor - 64) x 2.5 A
96% < pulse duty factor ≤ 97% 80 A
Pulse duty factor > 97% Charging is not permitted.
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