Communication Connection - Sunways STH-3K Series User Manual

Meter terminals definition as shown in table 4-36:
No.
3 4
1 2
RS485-2
7 9 10
5
8
6
RS485-2
Figure 4-36 Meter terminals definition
Please refer to chapter 4.4.2 for the communication between Meter and inverter.
③ Export limitation & control or generation limit solution
Any further difficulties in export limitation & control or generation limit solution, wiring in-
structions and configuration, please contact Sunways after-sales at service@sunwaystech.
com. You can also refer to chapter 6.7.
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Definition Function
1 L
2 NULL
L/N connect to grid to detect
power grid voltage
3 NULL
4 N
5 L-S1
6 L-S2
7 NULL
Connect CT to detect current
8 NULL
9 NULL
10 NULL
RS485 Communicate with inverter
※ 4.5 Communication Connection
4.5.1 Communication wiring illustration
All communication ports are hidden behind the communication terminal at the bottom of
inverter which including Meter port, CAN port, BMS port, EMS port, RLYOUT port, DRED port,
as shown in Figure 4-37、4-38.
Cables Screw cap
Single hole seal ring
1
2
3
4
5
6
The insulator Screw
Com sheet cover
Figure 4-37
Figure 4-38
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