Installation Manual

6.
ForcreatinganRS485bus-connectallB,AandGpinsinallinverters.Thefollowingfigureshowsthis
connectionschema:
 
Figure 30: Connecting the inverters in a chain
NOTE
Do not cross-connect B, A and G wires.
7. Tightentheterminalblockscrews.
8. Checkthatthewiresarefullyinsertedandcannotbepulledouteasily.
9.
PushtheRS485terminalblockfirmlyallthewayintotheconnectorontherightsideofthe
communicationboard.
10.
TerminatethefirstandlastSolarEdgedeviceinthechainbyswitchingaterminationDIP-switchinside
theinvertertoON(movetheleftswitchup).Theswitchislocatedonthecommunicationboardand
ismarkedSW2.

Figure 31: RS485 termination switch
NOTE
Only the first and last SolarEdge devices in the chain should be terminated. The other inverters in
the chain should have the termination switch OFF (down position).
11. Ifnotusingsurgeprotection,connectthegroundingwiretothefirstinverterintheRS485chain;
makesurethegroundingwireisnotincontactwithotherwires.ForinverterswithaDCSafetyUnit,
connectthegroundingwiretothegroundingbus-barintheDCSafetyUnit.
Single Phase Inverter with HD-Wave Technology Installation MAN-01-00306-1.1
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Creating an RS485 Bus Connection