17
Compress the two snap-in springs by hand and release
Where the inverter is equipped with a DC switch, ensure the
switch is in the "OFF" position before connecting the inverter
to PV panels. Switch to "ON" after completing the connection.
Caution:
` Before connecting the PV panels, ensure the plug
connectors have the correct polarity. Incorrect polarity could
permanently damage the unit.
` Checks the short-circuit current of the PV string. The total
short-circuit current of must not exceed the inverter’s
maximum DC current.
` High voltage exists when the PV panel is exposed to the sun.
Secure the terminal connection and, to avoid electric shock,
do NOT touch any exposed components.
3.4.3 RS485 Communication
An RS485 interface is used for multipoint communication. The
EzLogger can monitor and communicate with 50 inverters at
the same time; however the cable length should not exceed
1000 m. The diagram below shows a typical inverter
connection through the RS485 interface.