User Manual
4 Installation Guide
25
4.4.8 Communication solution
The communication method of PVS is shown below:
PVS 1
A1 B1 A2 B2
RS485A
RS485B
PVS 2
A1 B1 A2 B2
PVS n
A1 B1 A2 B2
PC
120Ω resistor
(optional)
Logger
Connect A1 and B1 of first PVS to A1 and B1 of data collector;
Connect A2 and B2 of first PVS to A1 and B1 of second PVS;
Connect A2 and B2 of second PVS to A1 and B1 of third PVS;
And so forth: connect A2 and B2 of previous PVS to A1 and B1 of next PVS
If the PVS is equipped with optional PV internal power supply, monitor
can wok normally when the PV voltage meet the switch power supply’s
nominal work power supply range.
4.4.9 Bottom wirings
The bottom wirings are described in following figure.
