Installation and operating manual
Page 84 of 95
(PVI-3.8/4.6-I-OUTD Rev.: 1.5)
6.1.2
RJ45 connectors
Alternatively, the RS485 serial connection of the inverters, whether as single units or a
daisy chain, can be performed by means of RJ45 connectors (see Fig
. 24
)
The wiring must be routed through the holes closed with airtight plugs, located on the
bottom of the inverter (see Fig
. 23
). Input wiring passes through one hole and is
assembled to one of the RJ45 connectors; output wiring passes through the other hole
and is assembled to the RJ45 connector of the next unit.
It does not matter whether it is no.1 or no.2 insofar as, being connected in parallel, the
signals are the same.
RJ45 connectors
Pin
#
Signal
Name
Description
1
Not Used
2
Not Used
3
+TR
+ Data Line
(RS485 Communication)
4
+R
Remote OFF
Remote control (see
paragraph 5.5.6.10 for details).
5
-TR
- Data Line
(RS485 Communication)
6
Not Used
7
RTN
Signal Return
(Common mass for logical
signals)
8
Not Used
6.1.3
Daisy chain
The RS-485 terminal block or RJ45 connectors can be used to connect a single
AURORA inverter or multiple inverters, connected in a daisy chain. The maximum
number of inverters that may be connection in a daisy chain is 62. The recommended
maximum length of this chain is 1000 meters.
If several inverters are connected in a daisy chain, it will be necessary to assign an
address to each. See paragraph 5.5.6.1 for information on changing addresses.
Furthermore, the last inverter in the chain must have the line termination contact of the
activated line (switch S2 -120
Ω
TERM in ON position) see Fig.
24
.
Each AURORA is provided with default address two (2) and with the S2 switch in the
OFF position.
Summary of Contents for Aurora PVI-3.8/4.6-I-OUTD
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