Installation and operator’s manual
Page 50 of 65
PVI-2000-OUTD-AU Rev.: 1.0)
The single AURORA has a default address is two (2) and the S1 dip switch is in
the OFF position (pushed away from the side access panel). The RS-485 address does
not have to be configured for the single AURORA inverter.
Up to 31 AURORA inverters can be connected on the same RS-485 line. The
maximum recommend RS-485 cable length is 1300 yards (1200 m).
In case multiple inverters are daisy-chained to the same RS-485 line, then the last
unit must be terminated by changing the position of the dip-switch shown in
Fig.16 from OFF to ON. The default position of the switch is OFF. Also, each
unit must have a different address. See par. 6.2 to change the addresses.
In order for the RS485 communication line to perform the best, Power-one
recommends to connect its PVI-RS232485 adapter before the first unit of the
daisy-chain (see fig. 17 for details)
Equivalent devices may also be used for the same purpose, but they have not been
tested therefore Power-one cannot grant the right functionalities.
Please also note that ordinary commercial adapters may need additional impedance
termination. Aurora PVI-RS232485 adapter DOES NOT.
The following diagram shows how to connect multiple units on daisy-chain style in the
same RS-485 bus.