Hitachi SJ-P1 Series - Ethernet System Configuration Examples

5-8
Chapter 5
Installation and Configuration
5.7 System Configuration
Examples of the Ethernet system configuration are
shown below.
・When configuring a system or confirming the
startup, read this guide and the instruction
manual about the client. The client means
higher-level device (master).
・Make sure that the communication line and the
power line are placed as far as possible from
each other. If the power line and the
communication line are placed close to each
other, the communication line will pick up noise
from the power line that can interfere with the
transmission.
・Make sure to set up the system, so that in an
event of a network failure, the inverter output
stops immediately. Instruct an example of
procedure as shown in "5.5 About the
connection".
・In case of configuring a system that the inverter
operates immediately at powered on, please
consider to take about 1 minute for the link
established.
[Function the network hub]
PORT1 and PORT2 are available as network hub
(shown in above example 2), if the inverter is
powered.
The only problem that the inverter can detect
related to the Ethernet connection is a
disconnection between this device and the
inverter. If a communication timeout occurs by
disconnection between this device and the client,
there is no function to accommodate in such a
trouble.
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Client
（e.g. PLC）
Network
hub
P1-EN
SJ-P1
Ethernet
cable
P1-EN
SJ-P1
[Example 1]
[Example 2(using the function of network hub)]
Client
（e.g. PLC）
P1-EN
SJ-P1
P1-EN
SJ-P1
Ethernet cable
Server
Server and
network hub
Server
Ethernet cable can be connected with
either PORT1 or PORT2.
Server
Ethernet
cable
Ethernet
cable