SMA SUNNY ISLAND 4.4M Operating Manual page 71

SMA Solar Technology AG
Test point
Cable at BatVtgOut and DigIn
Checking the Wiring of the Communication Products
Test point
Electricity supply to communication
products
Termination of the communication
buses
Multicluster-Box control and measur-
ing cable (BackupVtgCur)
Checking the System Devices
Test point
System components
AC1 connection
AC2 connection
Operating Manual
Test criterion
The cable must be threaded through a ferrite.
The cable length must be less than 30 m.
Test criterion
The plug-in power supply units are plugged in.
The communication products are connected to an electricity supply.
The communication buses are connected to the first and last device in
the bus.
The cable length must be less than 30 m.
Test criterion
All system devices are correctly connected (see the manuals for the
devices).
Ensure by measuring that all system devices are connected with the
same ground potential.
After the system-specific connection, the required components are con-
nected at terminal AC1 (see Installation - Quick Reference Guide of
the System Used).
After the system-specific connection, the required components are con-
nected at terminal AC2 (see Installation - Quick Reference Guide of
the System Used).
6 Electrical Connection
SI44M-80H-12-BE-en-10
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