Power One Aurora Installation Manual page 6

4. Connect all inverters in the chain (make a serial link between inverters). You need to
locate the RS-485 terminal block for each inverter in the chain. Inverters are
connected by twisted pair signal cable from one RS-485 terminal block in the inverter
to the next inverter in the chain. The RS-485 connectors may be a screw terminal
block or cage-clamp connector, and there may also be RJ12 ports depending on the
Aurora inverter. An example terminal block from an Aurora inverter is shown below.
For easier installation, the inverter typically features two holes so that input and
output cables can be separated when multiple units are connected in a daisy chain.
Cable is routed through the holes located at Inverter bottom that are blanked with
waterproof plugs. Power-One supplies cable glands that must be installed in the holes
to protect the inverter. After passing through the cable gland, cables are connected
inside of the unit to RS-485 terminal blocks. Terminal blocks are reached by
removing a door or covering over the RS-485 terminal block.
Some Aurora inverters allow connections between inverters using RJ12 connectors
and cabling. However, note that the connection between the first inverter in the chain
and the Aurora Universal must be made through the RS-485 connectors.
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