EKI-9500 Series User Manual
12
2.4
Power Supply Installation
2.4.1
Overview
The switches can be powered by using the same DC source used to power other
devices. A DC voltage range of 24 to 110 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.
EKI-9500 Series support 24 to 110 VDC. Dual power inputs are supported and allow
you to connect a backup power source.
Figure 2.3 Power Wiring for EKI-9500 Series
2.4.2
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.
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
