Wiring Of An Inverter With Rs485 At A Sunny Boy Control - SMA Sunny Boy 485PB-NR Kurzanleitung

SMA Technologie AG

Wiring of an inverter with RS485 at a Sunny Boy Control

Short Description
3 1
3
DATA+
8
DATA-
5
GND
Connect shield
to case
5
7
Betri
Phot eb
Phot ovolt aik-S Ope ratio
ovolt aic string tring wech n
inver selric Erds chlus
ter hter Earth s
Fault
Störu
2 Failu ng
re
Connect shield
to case
5
7
Phot Betri eb
ovolt Ope ratio
Phot ovolt aik-S tring n
aic string wech selric Erds
inver ter hter Earth chlus s
Fault
Störu
ng
Failu re
2
max. 50
inverter on
RS485 bus
Retrofitting the Communication Interfaces
The termination resistor and the
pull-up/pull-down resistors are activated
according to the technical documentation
of the Sunny Boy Control
Sunny Boy Control
with RS485 Piggy-Back
on COM1
The last inverter on the
RS485 bus must be terminated.
This is done by mounting jumper
"A" on the system control board,
or by installing a 120 Ohm resistor
between connector "2" and
connector "7".
PB-NR-IXX073014 Page 26