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may be required to install between the Inverter(s) and the utility isolation
transformer until a pure sine wave is achieved. Any such action must be done by
qualified personal and in conjunction with local electrical authorities. Specific
guidance is outside the scope of this document.
3.4.4 Communication Interface
3.4.4.1 Standard RS-485 Communication
The inverter has integrated RS-485 communications capability. The RS-485
connections are made in the wiring box, as shown in Figure 3-13:
Figure 3-13 Internal communication structure
1. RS-485 +: communication pin (also called RS-485 A)
2. RS-485 -: communication pin (also called RS*485 B)
3. RS-485 COM: common ground for communication signal
