ZyXEL XGS4700-48F User Guide - Page 50

AC Power Connections, DC Power Connections

Page 50 highlights

Chapter 3 Hardware Overview • Keep the power supply switch in the OFF position until you come to the procedure for turning on the power. Note: Use the included power cord for the AC power connection. Note: Use only power wires of the required diameter for connecting the Switch DC power input to a power supply (see Chapter 55 on page 455 for the required wire diameter). 3.3.1 AC Power Connections 1 Connect the female end of the power cord to the AC power socket. 2 Connect the other end of the cord to a power outlet. 3.3.2 DC Power Connections The Switch uses a single ETB series terminal block plug with four pins which allows you to connect up to two separate power supplies. If one power supply fails the system can operate on the remaining power supply. Use two wires to connect to a single terminal pair, one wire for the positive terminal and one wire for the negative terminal. Note: The current rating of the power wires must be greater than 20 Amps. The power supply to which the Switch connects must have a built-in circuit breaker or switch to toggle the power. Note: When installing the Switch power wire, push the wire firmly into the terminal as deep as possible and make sure that no exposed (bare) wire can be seen or touched. Exposed power wire is dangerous. Use extreme care when connecting a DC power source to the device. To connect a power supply: 1 Use a screwdriver to loosen the terminal block captive screws. 2 Connect one end of a power wire to the Switch's RTN (return) pin and tighten the captive screw. 3 Connect the other end of the power wire to the positive terminal on the power supply. 4 Connect one end of a power wire to the Switch's -48V (input) pin and tighten the captive screw. 50 XGS4700-48F User's Guide

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Chapter 3 Hardware Overview
XGS4700-48F User’s Guide
50
Keep the power supply switch in the
OFF
position until you come to the
procedure for turning on the power.
Note: Use the included power cord for the AC power connection.
Note: Use only power wires of the required diameter for connecting the Switch DC
power input to a power supply (see
Chapter 55 on page 455
for the required
wire diameter).
3.3.1
AC Power Connections
1
Connect the female end of the power cord to the AC power socket.
2
Connect the other end of the cord to a power outlet.
3.3.2
DC Power Connections
The Switch uses a single ETB series terminal block plug with four pins which allows
you to connect up to two separate power supplies. If one power supply fails the
system can operate on the remaining power supply. Use two wires to connect to a
single terminal pair, one wire for the positive terminal and one wire for the
negative terminal.
Note: The current rating of the power wires must be greater than 20 Amps. The power
supply to which the Switch connects must have a built-in circuit breaker or
switch to toggle the power.
Note: When installing the Switch power wire, push the wire firmly into the terminal as
deep as possible and make sure that no exposed (bare) wire can be seen or
touched.
Exposed power wire is dangerous. Use extreme care when
connecting a DC power source to the device.
To connect a power supply:
1
Use a screwdriver to loosen the terminal block captive screws.
2
Connect one end of a power wire to the Switch’s
RTN
(return) pin and tighten the
captive screw.
3
Connect the other end of the power wire to the positive terminal on the power
supply.
4
Connect one end of a power wire to the Switch’s
-48V
(input) pin and tighten the
captive screw.