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Photovoltaic Direct-driven Inverter VRF
4.7 Connection Method and Steps for System Communication
4.7.1 Communication connection between IDU and ODU
NOTICE! The centralized controller can be installed when it is necessary.
Connect IDU and ODU via terminal D1/D2 of wiring board XT2. Below are the connection
graphics of single unit and modular units:
Fig.4.7.1 Connection of single unit
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