User manual

User Manual Page 63 of 74
(PVI-6000-OUTD-UK-W Rev.1.0)
RJ12 connectors
Pin #
Signal
Name
Description
1 Not Used
2 +TR
+ Data Line
Required for RS485 communication.
3 +R
Remote OFF
Required or Remote OFF control (see
chapter 5.5.6.11 for details).
4 -TR
- Data Line
Required for RS485 communication.
5 Not Used
6 RTN
Signal Return
Common reference for logical signals.
6.1.3 Daisy chain
RS-485 terminal block or RJ12 connectors can be used to connect a single AURORA
inverter or many AURORA inverters connected in a daisy chain. Maximum number of
inverters that can be connected in a daisy chain is 248. Recommended maximum length of
this chain is 4,000 feet.
In case many inverters are connected in a daisy chain, it is necessary to assign an address to
each unit. Refer to paragraph 5.5.6.1 for instructions on how to set addresses.
The last inverter of the chain must have line termination contact active (S2 switch -120Ω
TERM set to ON). See Fig. 24.
Any AURORA inverter is supplied with the default address two (2) and with the S2 switch in
the OFF position.
In order to ensure optimum communication on the RS-485 line, Power-One recommends
connecting a PVI-RS232485 adapter between the first unit of the daisy chain and the
computer. See Fig. 25 for further details.
Other RS-232 to RS-485 converters available on the market can also be used but Power-One
does not guarantee correct operation since equipment has never been tested with those
devices. Moreover, some of those converters require external termination impedance, which
is not necessary for the PVI-RS232485.