User manual

User Manual
31
User Manual
32
6.6 COMMUNICATION AND MONITORING SETTING
SAJ solar inverter offers 2 communication solutions for users: RS485
(standard) and Ethernet (optional). All the SAJ products involved in the solar
monitoring system are:
Sununo-TL series solar inverters: single phase transformerless on-grid solar
inverters, such as Sununo-TL1.5K/2K/3KA/4KA/5K，SU3KMTL1/
SU4KMTL1/SU5KMTL1
SAJ Logger: data logger for remote monitoring and maintenance of large
solar power plants.
SAJ Viewer: The free PC software solution for SAJ solar power plant
monitoring via RS485 or RJ45.
Note : The text lines in the following Figures indicates communication cable
6.6.1Communication through RS485
RS485 can be used for both singlepoint and multipoint communication. At
present, RS485 can communicate and monitor up to 32 points.
RS485 Singlepoint Monitoring
Communication of a single inverter is shown in Figure1 as below. Users can
connect inverter's RS485 port to PC through RS485/232 Module.
To realize multipoint monitoring of SAJ solar inverter, we offer
2configurations as shown in below:
(1)
PC Multipoint Monitoring
Figure 6.19 Communication of a Single Inverter
Figure 6.20 PC Multipoint Monitoring
Figure 6.21 PC + SAJ Logger Multipoint Monitoring
RS485 Multipoint Monitoring
6.5 DC SIDE DISCONNECTION
Only qualified electricians who have fully understood all safety regulation
contained in this manual can disconnect and maintain the DC connectros.
(2)
SAJ Logger Multipoint Monitoring