Communication Wiring - Sunways NTX3000 User Manual

WARNING
If the inverter connect to 2 PV arrays, the max total
current for PV arrays connect terminals "PV1±" shall
not be exceed 17.5 A DC for the single input channel
(NTX 3000).
When connected to 1 PV array, the array connect
to one pair of terminals "PV1±"and other pair of
terminal "PV1±" should be free.
PV PV PV
1+ 1+ 1–
PV PV PV
1+ 1+ 1–
Ethernet RS485
PV PV PV PV PV
3 2
1– 2+ 2+ 2– 2–
Ethernet RS485
PV PV PV PV PV
3 2
1– 2+ 2+ 2– 2–
5.5

Communication wiring

1. Remove the covers on RS485 and Ethernet
knockouts.
2. Install two 1/2 in. conduit fitting in the RS485
and Ethernet knockouts (the knockout on the
bottom of the NTX inverter). Fasten the conduit
fitting on the inside of inverter with the appro-
priate locknut.
3. Lay down the RS485 cables between NTX inverter
and other NTX inverter, lay down Ethernet cables
between NTX inverter and Hub or router.
4. Insert the single cable into RS485 and Ethernet
ports.
5. Bunding the signal cable onto the cable holder
of wiring box.
5 Electrical connection
29