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4.8.11  Inverter RS485 communication connections
Read all of these instructions, cautions, and warnings for the Delta  
E series  inverter and associated PV array documentation.
Lisez toutes les instructions, rubriques Prudence et Avertissement 
de l’onduleur Delta  E series , ainsi que la documentation sur le 
panneau photovoltaïque associé.
Interface connection RS485 (EIA485) 
The Delta  E series  inverters oer an EIA RS485 communication interface which can address up 
to 31 daisy chained inverters. For optimal performance, all unused interface connections must 
always be terminated by placing the termination jumper in the “on” position.  
WARNING!
AVERTISSEMENT!
Clearly distinguish between grid and backup load connections. If 
there are multiple inverters in the installation, each inverter should 
be connected to a separate backed-up loads panel. Do not share
backup output between inverters.
Distinguer clairement entre les connexions de réseau et celles de 
la charge de réserve. Si l’installation contient plusieurs onduleurs, 
chaque onduleur doit être connecté à un panneau de charge de 
réserve distinct. Ne pas partager la sortie de charge de réserve 
entre les onduleurs.
NOTICE!
AVIS!
Grounding
7.  Connect the wire (GND) to the Grounding 
 terminal.
  –  2x Grounding Electrode Conductor is 
  provided, it is a slot head screw type 
  connector. The terminals accept solid or 
  stranded copper 10-4 AWG wire, 
  recommended screw torque is 26 in-lbs 
  (2.9 Nm).