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Protect PV.500 Operating Instructions
44 of 70 80000031354 BAL
7 Interfaces
PV power stations are usually monitored from a central location.
Alongside the PV cells, the inverter is a key component of a power
station, which is why several communication interfaces are
available as standard.
These include relay contacts and optocouplers, as well as various
serial interfaces with protocols for integration into higher-level
monitoring systems.
To facilitate PV power station monitoring, AEG also offers
corresponding additional components that are adapted for use with
inverters and PV generators. This enables the client to monitor an
entire PV power station from a central location easily and reliably.
7.1 Communication Interface
The photovoltaic inverter is equipped with a central communication
unit, a "MultiCom CCC interface".
As well as performing various other functions, this unit facilitates
communication between PV inverters and higher-level monitoring
systems.
A special system of central monitoring via the Internet can be
realised using AEG monitoring components such as "PV.LoG".
The connection between the inverter and PV.LoG has been
optimally adapted for monitoring and management purposes and is
established via the Modbus protocol. If you have any further
questions, please contact your supplier.
7.1.1 General
Two separate potential-free serial interfaces are provided as
standard for the purpose of establishing communication
connections. One interface – port X2 – is assigned the
AEG-specific protocol CBSER and is used both locally and
remotely for corresponding service tools. The other one – port X5
– supports the Modbus protocol and enables the PV inverter to be
integrated into higher-level monitoring and control systems with
ease. This port can be switched over from RS232 to RS485.
An external CAN bus provides a further connection option, which
can be used for monitoring via a remote panel.
The MultiCom CCC interface can be found on the pivot inside the
DC/AC cabinet (item A29.1; see the assembly diagram).
48


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