Hardware description 31
Accessories
The inverter has two slots for I/O extension and fieldbus adapter modules:
• SLOT 1 supports I/O extension modules:
• FIO-01 Digital I/O extension module
• FIO-11 Analog I/O extension module
• SLOT 2 supports future fieldbus adapter modules.
Connections and interfaces
Refer to Connection diagram on page 54 and to Connection area layout on page 56.
Connection Description
DC input connectors Connection point for the PV arrays.
The standard and -S models have a pair of DC screw terminals to
attach the DC cables from an external string combiner box.
The -SX model has 8 pairs of plug type PV quick DC connectors to
attach up to 8 separate strings of PV panels to the inverter.
AC connector AC connection to the electrical grid.
Remote control unit
terminal X1
Reserved for control unit (display unit) remote installations.
Remote monitoring
terminal X2
Connection to a remote monitoring adapter.
Option module
terminal, SLOT 1
Connection for I/O extension modules.
Option module
terminal, SLOT 2
Connection for fieldbus adapter modules.
Control cable shield
grounding
Clamps to ground the control cable shields to the protective earth.
Additional PE
terminal
Use this terminal according to your local electrical installation
guidelines. Refer to Power cable requirements on page 37.
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