26 RN200 user manual
7.1
RN200 is able to exchange data with the inverters for the renewable sources, using the
Modbus protocol. This is a binding limit: the inverter must implement this protocol.
RN200 can acquire the following measurements from inverters:
Manufacturer, model, options.
Nominal powers (apparent, active, and reactive in quadrants Q1 and Q4).
Supplied powers (apparent, active, and reactive).
Status of the grid relay (started/stopped).
Diagnostics.
It can send the following commands:
Start/stop.
Limitation of the supplied active power.
Setpoint for the supplied reactive power
Anomaly reset.
The inverters can be connected to the RN200 with three different communication interfaces:
The RS232 serial port (JA, Modbus RTU).
The RS485 serial port (JW, Modbus RTU).
The ETHERNET port (JY, Modbus TCP).
We recommend using the ETHERNET interface whenever possible, because it guarantees
the best performance.
For the configuration of the communication ports and for selecting the type of inverter, refer to
the technical manual.
Before proceeding with any type of command, both manual and automatic, check on
the "R.XX" pages of the controller that communication with the inverters is working
properly.
7.2
Four operating modes can be used by the controller:
OFF_RESET:
the inverters for the renewable sources are stopped (or in the shutdown
phase), the anomalies are all cancelled and programming can be accessed to modify
the parameters. The RNCB circuit breaker is open to insulate the inverters from the
common bars.
MAN
: the start and stop of the inverters for the renewable sources, and the
management of the RNCB circuit breaker (if present) are the responsibility of the
operator (the controller does not automatically perform these operations): since the
protections are activated, however, the controller can automatically open RNCB
and/or stop the inverters if necessary. Access to programming is allowed, but only
some parameters can be changed.
Содержание RN200
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