Operation and installation manual
Page 67 of 82
(PVI-10.0/12.5-OUTD-xx Rev:1.2)
Please note that - unlike Aurora PVI-232485 - such devices may require implementation of
external termination impedance.
The following diagram shows how to connect multiple units in a daisy-chain configuration.
Fig.27 - Multiple daisy-chain connection
NOTE
:
The RS-485 link supports up to 32 inverters. Choose any given address
between 2 and 63
NOTE
:
if one or more inverters are added to the system at a later time, when
an RS-485 link is used, remember to set back to OFF the switch of the
inverter that was the last one.
RTN +T/R -T/R
1
st
Aurora
2
nd
Aurora
Last Aurora
S2
switch
ON
S2
switch
OFF
RS-485 cable
max. length = 1,000mt
max. inverter nodes = 31
Block Diagram: RS-485 cabling
AURORA PVI-12.5-OUTD
PC with RS232 port
(Sub-D 9 pin male)
PVI-RS232/485
RS485 to RS232
Converter
(Sub-D 9 pin female)
RTN +T/R -T/R
(terminal block)
Data-Logger
RS485 port
RTN +T/R -T/R
(terminal block)
Off
On
Recommended RS-485 cable type:
Æ
LiYCY, 2x2x0.5mm (no.2 twisted
pairs) + shield
Æ
RS-485 cable (1pair + 1 conductor) +
shield
RTN +T/R -T/R
S2
switch
OFF
RTN
+T/R -T/R
