Chapter 2 Installation
Electrical Installation
8
ETC II Network Communicator
Electrical Installation
Power Source Connection
Before connecting your device to the power source, check the label on the
back of the device to ensure that it is equipped with the appropriate power
supply.
AC power supply: Connect the line wire to terminal L/+ and the neutral wire
to terminal N/-.
DC power supply: Connect the positive wire to terminal L/+ and the negative
wire to terminal N/-.
Figure 2-5 Power Source Connection
Chassis Ground Connection
Connect the chassis ground of the device to the switchgear earth ground
using a dedicated wire greater than 2 mm
2
/14 AWG.
Serial Port Connection
The COM3 RS-232 service port is normally used for servicing and setting up
the ETC II. It can also be used as a slave port for serial-to-serial
communications via the ETC II gateway.
The COM4 and optional COM5 gateway ports are used for connecting the
ETC II to the RS-422/RS-485 slave networks with up to 32 devices on each
network. For device routing rules, see
Routing Messages over Slave
Networks
in Chapter 3.
The COM4 port can also be used as a slave port for a connection of a
master application to the ETC II via an RS-422/RS-485 serial network.
For proper serial communications, ensure that all port parameters, such as
the communication protocol, baud rate, data format and parity, are correctly
set in both the ETC II and in the connected serial devices. See
Serial
Network Connections
in Chapter 3 and
Configuring Serial Ports
in Chapter 5
for the ETC II setup instructions. Refer to Figures 2-6 through 2-11 for the
connection diagrams.
