E F A P O W E R E V - H C - I N S T A L L A T I O N A N D U S E R M A N U A L
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B.
Converter directly connected to EV-HC
In this case the converter is directly connected to the X2 terminal of EV-HC, as represented in Figure 16.
The USB connection point can now be installed in a fixed location where the PC is located, providing full access
to the Home Charger.
A Network of EV-HCs connected to a Local PC
This scenario is a development of the previous. In this situation, all the chargers are connected together through
the X2 connector in Unit, and each charger is equipped with a RFID card reader and/or meter.
If the charger isn’t equipped with an Energy Meter, the energy field on the transactions will be zero.
The transactions can be saved in an excel file ant therefore reports of charge associated to a specific RFID card
can be generated.
ATTENTION: There is a Maximum limit of the number of the chargers that can be connected this way: 127
chargers in the network.
A USB-RS485 converter is used to connect all the chargers to a Local PC, refer Table 6.
The USB converter is connected between the Local PC and the first/closest charger (through X2). The pre-
installation presented above can be implemented.
Thereafter each charger is connected through the same X2 terminal till the last. A shielded communication cable
of at least 3 conductors shall be used, as represented in the following figure.
Shielded communication cable of ate least
3 conductors
–
no length constrains
3 pin Panel Outlet Connector
USB-RS485 FTDI
converter with
mate male
connector
Figure 17 - Network of EV-HCs connected to a local PC
Figure 16 - Converter directly connected to EV-HC
Cable length should be 5 meters
maximum