Power Supply Installation; Overview; Figure 2.12 Power Wiring For Eki-7428 Series - Advantech EKI-7428 Series User Manual

2.9

Power Supply Installation

2.9.1

Overview

Warning! Power down and disconnect the power cord before servicing or wiring
the switch.
Caution! Do not disconnect modules or cabling unless the power is first switched
off.
The device only supports the voltage outlined in the type plate. Do not
use any other power components except those specifically designated
for the switch device.
Caution! Disconnect the power cord before installation or cable wiring.
The switches can be powered by using the same DC source used to power other
devices. A DC voltage range of 12 to 48 VDC (Non PoE) or 48 VDC (PoE) must be
applied between the V1+ terminal and the V1- terminal (PW1), see the following
illustrations. A Class 2 power supply is required to maintain a UL60950 panel listing.
The chassis ground screw terminal should be tied to the panel or chassis ground. A
redundant power configuration is supported through a secondary power supply unit
to reduce network down time as a result of power loss.
Dual power inputs are supported and allow you to connect a backup power source.
Single DC Power
P2 P1
Chassis
GND
(pane)
One DC Supply

Figure 2.12 Power Wiring for EKI-7428 Series

Redundant DC Power
P2 P1
Chassis
GND
(pane)
Dual DC Supplies
17 EKI-7428 Series User Manual