Power Supply Installation; Overview; Figure 2.16 Power Wiring For Eki-7708 Series - Advantech EKI-7708 Series User Manual

2.7

Power Supply Installation

2.7.1

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. 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.
EKI-7708E-4F, EKI-7708E-4FI, EKI-7708G-4F, and EKI-7708G-4FI support 12 to 48
VDC, EKI-7708E-4FP, EKI-7708E-4FPI, EKI-7708G-4FP, and EKI-7708G-4FPI
support 48 VDC. Dual power inputs are supported and allow you to connect a backup
power source.
EKI-7708 Series User Manual
Single DC Power
P2 P1
Chassis
GND
(pane)
One DC Supply

Figure 2.16 Power Wiring for EKI-7708 Series

Redundant DC Power
P2 P1
Chassis
GND
(pane)
Dual DC Supplies
21