Advantech EKI-5624PI, Руководство пользователя

Страница: 25 / 64

16 EKI-5729PI & EKI-5624PI User Manual
2.5 Power Supply Installation
2.5.1 Overview
The switches can be powered by using the same DC source used to power other
devices. A DC voltage range of 12 to 24VDC must be applied between the V1+ termi-
nal and the V1- terminal (PW1), see the following illustrations. A Class 2 power sup-
ply 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 configura-
tion is supported through a secondary power supply unit to reduce network down
time as a result of power loss.
EKI-5729PI & EKI-5624PI support 12 to 24 VDC. Dual power inputs are supported
and allow you to connect a backup power source.
Figure 2.7 Power Wiring for EKI-5729PI & EKI-5624PI
2.5.2 Considerations
Take into consideration the following guidelines before wiring the device:

The Terminal Block (CN1) is suitable for 12-24 AWG (3.31 - 0.205 mm
2
). Torque
value 7 lb-in.

The cross sectional area of the earthing conductors shall be at least 3.31 mm
2
.

Calculate the maximum possible current for each power and common wire.
Make sure the power draw is within limits of local electrical code regulations.

For best practices, route wiring for power and devices on separate paths.

Do not bundle together wiring with similar electrical characteristics.
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.
P2 P1
Chassis
GND
(pane)
One DC Supply
P2 P1
Chassis
GND
(pane)
Dual DC Supplies
Single DC Power Redundant DC Power