OmniSwitch 6855 Series Chassis and Hardware Components DC Power Supply Considerations
OmniSwitch 6855 Series Hardware Users Guide March 2009 page 2-37
DC Power Supply Considerations
In addition to the installation steps described in “Connecting a Power Supply Directly to the Chassis” on
page 3-5 and “Rack Mounting the Power Supply Tray” on page 3-6 DC power supplies have the follow-
ing additional considerations:
• Connect to a -48V reliably grounded DC SELV source if using either a PS-120I80DC48 or PS-
I40DC2448 power supply.
• Connect to a 24V reliably grounded DC SELV source if using a PS-100I80DC24 or PS-I40DC2448
power supply.
• Use common DC return connections for the DC power supplies. The DC return terminal conductor
should be connected to the equipment frame.
• The Branch Circuit Overcurrent Protection must be rated a Maximum of 15A.
• Use 12AWG solid conductors only.
• A readily accessible disconnect device that is suitably approved and rated shall be incorporated in the
field wiring.
Twisted pair wire (red and black) for a DC power supply
Note. Refer to the wiring diagram for information on connecting the DC power supply to a DC power
source.
Connecting a DC Power Source
The DC power supply on your switch contains a power connector with three (3) square slots for connect-
ing the positive, negative, and ground wires from a DC power source.
OmniSwitch DC Power Supply Connector
MIN 1 TURN PER 1.5
HALF TURN PER .75
Black
Red
Side Screws for Connector Removal
DC Power Connectors
+ -
To Next Page
Loading...
