5.7 Tests, Control pilot and charger output check
5.7.1 Description
The control pilot signal is the communication between the charger and the electric vehicle and cover three main areas
of communication.
1. The state of the vehicle / charger
a. Disconnected
b. Connected
c. Charging
d. Charging with ventilation
e. CP to PE fault
f. Charger Fault
2. The Maximum current to be drawn by the vehicle
3. Whether digital communication indicates current
The CP signal uses a 1 kHz square wave signal with the charger state communicated using the signal voltage level.
The maximum current and whether digital communication is in use is indicated by the signal duty cycle.
The EVCC300 takes the place of the vehicle and allows the user to set the desired CP code. The EVCC300 will then
read the code back from the charger as set out in table A8 of IEC61851-1. This allows the user to verify the correct
operation of the charger, ensuring that the charger responded as expected.
In addition, when testing the control pilot signal the EVCC300 will also measure the charger output voltage and
frequency. The EVCC300 will measure the output of single phase chargers, using phase T1 only.
5.7.2 How to perform the test
4
1
3
2
7
5
6
8
Item
Description
Item Description
1
Charge output / mains voltage
measurements
5
Polarity of charger output L to N status
2
Control pilot code read from charger
6
Maximum current available from charger
3
Touch voltage limit and mains supply setting
7
Control pilot measurements
4
Softkey 1 and 2
Set code (simulating the vehicle)
8
Softkey 3
Short press = E-state
Long press = Back
31
Tests
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