CPS SCH Series, Инструкция по установке и эксплуатации

Страница: 54 / 116

50
RS485 network connection:
When the inverters are monitored via the RS485 communication, a unique
RS485 address for each inverter can be set up through the APP interface. Use
the CPS Connect app to assign an address to each inverter on the network. Up
to 32 inverters can be connected together in the RS485 communication network.
The daisy-chain topology is recommended for the RS485 network connection,
as shown in Figure 3-30. Other communication topologies, such as the star
networks, are not recommended.
Up to 32 inverters can be connected together in the RS485 communication
network. The daisy-chain topology is recommended for the RS485 network
connection, as shown in
Figure 3-33
. It is important to daisy chain the inverter
RS485 connections to minimize noise and bus reflections. Other
communication topologies, such as the star networks, are not recommended.
Figure 3-30 RS485 Network Connection
If there are multiple inverters in the RS485 network, the selector switch S201 of the
last inverter in the daisy-chain should be in ON position, to have the 120ohm
terminal resistor enabled. The selector switch S201 of all other inverters should be
in the OFF position to disable the terminal resistor.
It is important to daisy chain the inverter RS485 connections to minimize
noise and bus reflections. All RS485 connections must be terminated in a
serial fashion and not to exceed 32 in total. Daisy Chain vs. multiple branch
configuration is recommended.
Warning: Risk of Electric Shock.
Make sure all DC and AC power to the unit has been disconnected
before opening the inverter wire-box and ensure that hazardous
high voltage and power inside the equipment has been
discharged. Wait at least 5 minutes before opening the wire-
box.