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Protect PV.630 Operating Instructions
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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 various communication interfaces are availa-
ble 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 relevant
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 real-
ised 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 estab-
lished 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 connec-
tions. One interface – port X2 – is assigned the AEG-specific pro-
tocol CBSER and is used both locally and remotely for correspond-
ing 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).