Recom RCM SP-D Series User Manual page 25

4.5.2 RS485 Communication
RCM series single-phase inverter supports multiple inverters connection to a data logger in a
daisy chain manner through RS485 protocol.
Multiple inverters connection diagram as shown in Figure 4-21：
Data logger
Internet
The maximum distance between the inverter at the end of the daisy chain and the Data logger
should be within 1000M.
Attention
4.5.3 Anti-reverse or power limit solution
Anti-reverse or power limit solution, wiring instructions and configuration, please contact
RECOM TECHNOLOGIES after-sales at info@recom-solar.com.
4.5.4 Connection steps:
1) Remove the CT/DRED plate in the bottom of the inverter with a cross screwdriver.
2) Put the cables which you need through the components in the following order: screw cap,
sealing ring, insulator, metal plate, nut and 3/6pin connector, as shown in Figure 4-22:
3) Insert the cable to the port in the 3/6pin connector and fasten with a screwdriver.
4) Insert the 3/6pin connector into the 3/6pin connecter inside the inverter, and screw the CT/
DRED plate back with a cross screwdriver, as shown in Figure 4-23:
RCM 3.0~6.0-SP-D
series inverter
RS485
RECOM server
Figure 4-21
Suggest using the RS485 communication cable with a cross-sectional area
of 0.75-1.5mm² and an outer diameter of 5mm-10mm.
RS485 cable requirements: Shielded twisted-pair cable or shielded twisted
Ethernet cable.
RCM 3.0~6.0-SP-D
series inverter
...
RS485 RS485
Internet
RCM 3.0~6.0-SP-D
series inverter
25