Communication options
Modem
Option cards that can be built into the inverters are available to enable remote data retrieval via SOLPLUS+. These cards can either be installed in the factory to order prior to delivery or retrofitted. We also supply an external GSM box. External analogue modems can also be connected directly to the inverters without any additional hardware. A modem is capable of communicating with and reading the data of a maximum of 32 inverters networked by means of their RS385 ports.
SOLCOMBOX
The SOLCOMBOX is an accessory that has been designed specifically for use with SOLPLUS inverters. In the case of SOLPLUS inverters equipped with just one serial port (SP 80-120), the SOLCOMBOX allows the data of several inverters networked by means of their RS485 port to be called up and optional communication units such as a modem to be connected or sensors to be connected.
The SOLCOMBOX is an accessory that has been designed specifically for use with SOLPLUS inverters. If performs a number of different function depending on the hardware option cards installed in the box.
1. Sensor connection and energy management
In its standard form, the SOLCOMBOX facilitates the connection of sensors and the integration of energy management solutions by means of relays
and digital outputs.
2. Communication and other RS485 ports
GSM or analogue modem cards can be installed directly in the SOLCOMBOX to enable the data of PV installations that cannot be retrieved via the internet (TCP/IP) to be still be retrieved remotely. If you also wish to install other methods of data retrieval, such as a large display on which to visualise the data, an additional option card with a RS485 port is also available.
3. Grid and infeed management requirements
• Power reduction
The power reduction functionalityof the system is controlled by the power utility. The PRC (Power Reduction Card) option card is then responsible for forwarding the power reduction command to all of the inverters of the installation (so far as they are networked) by means of ripple-control signals.
• Controlling the cos phi value
The cos phi option card is used to control the cos phi value of the installation in accordance with analogue values specified by the power utility.
• Controlling the Q value
The Q/100V option card enables the Q value to be controlled by means of a 100 V tap at the transformer.
• Transferring the installation‘s output values
The analogue values option (4 – 20 mA) allows the output values of up to 32 inverters connected to the installation to be transferred to the power utility by the SOLCOMBOX.
