(3) PV system for 2 to 99 solar inverters with interface converter (IC)
PV
PV
INVERTER | (1) |
INVERTER | (2 to 99) |
RS 485 | RS 232 | PC |
I C |
|
Connection to PC via RS 485/RS 232
RS 485–
RS 485–
RS 485+
RS 485+
RX2
TX2
GND_G
RX
TX
GND_G
RS 485–
RS 485–
RS 485+
RS 485+
(3)Up to 99 solar inverters can be con- nected together and read out using this connection. In this case, there is a maxi-
117 mum cable length of 500 m between
In order to connect several solar inverters to a PC, the RS 485 signal is looped through from inverter to inverter, until it is led into the inter- face converter. From here, the RS 232 signal is conducted to the PC. Jumper JP400 is connected to the solar inverter that is furthest away from the interface converter. It must be open for all other solar inverters.
Stripped length: 11 mm
Jumper JP400: see above
the interface converter and the furthest solar inverter. The individual solar inverters are connected together via the RS 485 interface.
