3.5.3 Communication
Overview of communication ports:
3.5.3.1 WIFI/GPRS Communication (optional)
Connect the WIFI/GPRS module produced by Rayleigh Instruments to the COM1 port of inverter. After successful connection,
information such as power generation and running state of the inverter can be viewed via the App on the phone. For details
please refer to the module user manual. The block diagram of the WIFI/GPRS communication system is as follows:
3.5.3.2 Smart Energy Meter Connection (Optional)
The inverter is equipped with the feed-in power limit function, and the communication port for smart energy meter is COM2,
below is the method of connecting the smart meter in system.
3.5.3.3 DRM connection
The inverter supports the demand response modes as specified in the standard AS/NZS4777. The inverter has integrated a
terminal for connecting to a DRED. The details please refer to figure 3-17, and for CEI standard, DRM S0 is the DI port .
3.5.3.4 Relay connection
The relay can be set to fault alarm output, and user can configure it to be a normal open contact (COM
＆
NO) or a normal
close contact (COM
＆
NC).The relay is initially at the NC terminal, and it will trip to another contact when a fault occurs.
Use LED indicators or other equipment to indicate whether the inverter is in the faulty state. The following figures show
the typical applications of normal open contact and normal close contact:
COM2
C G N
C G N
C G N
C G N
Free of fault, relay does not
trip. Circuit is disconnected,
and LED indicator is off.
Fault occurs, relay trips.
Circuit is connected, and
LED indicator gets on.
Free of fault, relay does not
trip. Circuit is connected, and
LED indicator is steady on.
Fault occurs, and relay trips.
Circuit is disconnected and
LED indicator gets off.
Figure 3-19
Figure 3-20 Normal open contact
Figure 3-21 Normal close contact
Figure 3-17
COM1
Figure 3-18
PC
Wifi
GPRS/4G
Base Station
Mobile App
Router
Local mode
Internet
······
COM 1
Inverters
Bluetooth
Wireless
Telephone : +44 (0) 1245 428500
Email : [email protected]
15
Summary of Contents for RI-ENERGYFLOW 3P Series
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