62
terminal;
C) Remove the screwdriver from the square hole;
D) Pull the cables to ensure that they are firmly connected into the
terminal.
As shown in figure 4-23:
图
4-23
通信线缆接线示意图
Figure 4-23 Communication Cables Connection
(
3
)
锁紧
COM
接口的锁紧螺母。
Lock the lock nut of the
COM
interface.
注意!
Notice!
1
、
RS485
通信线缆为屏蔽双绞线;
2
、单条
RS485
菊花链上设备数量不能超过
32
台;
3
、
RS485
菊花链长度不能超过
1000
米,推荐
500m
以内;
4
、多台逆变器连接时,需要在菊花链的终端安装
120
Ω的
匹配电阻。