Contents
iv OmniSwitch 6855 Series Hardware Users Guide September 2011
OS6855-U24X ........................................................................................................2-24
OS6855-14/P14 ......................................................................................................2-25
OS6855-U10 ...........................................................................................................2-26
OS6855-24/U24/U24X Power Supplies .......................................................................2-27
PS-126I80AC Power Supply ..................................................................................2-28
PS-I80AC-CC Power Supply .................................................................................2-29
PS-360I160AC-P Power Supply ............................................................................2-30
PS-120I80DC48 Power Supply ..............................................................................2-31
PS-100I80DC24 Power Supply ..............................................................................2-32
OS6855-14/P14/U10 Power Supplies ...........................................................................2-33
PS-I40AC Power Brick ..........................................................................................2-34
PS-I66AC-P PoE Power Brick ...............................................................................2-35
PS-I185AC-P (SDR-240-55) PoE Power Supply ..................................................2-36
PS-I40DC2448 Power Brick ..................................................................................2-37
PS-I40DC2448E Power Brick ................................................................................2-38
PS-75I42DC48-P PoE Power Brick .......................................................................2-39
Power Supply Shelf ................................................................................................2-41
OS6855-24/U24 ...............................................................................................2-41
OS6855-14/U10 ...............................................................................................2-41
Stacking Cables .............................................................................................................2-42
AC Power Cords ...........................................................................................................2-43
Specifications .........................................................................................................2-43
DC Power Supply Considerations .................................................................................2-44
Connecting a DC Power Source .............................................................................2-44
Installing DC Power Source Wire Leads .........................................................2-45
Installing the PS-I185AC-P (SDR-240-55) Power Supply ...........................................2-47
Connecting the Removed Outer Jacket (ROJ) Power Cords ...........................2-47
Final Power Cord Connections ........................................................................2-49
Console Port ..................................................................................................................2-51
Port Pinouts ...................................................................................................................2-52
RJ-45 Console Port – Connector Pinout ................................................................2-52
10/100 Ethernet Port – RJ-45 Pinout (non-PoE) ....................................................2-52
Gigabit Ethernet Port – RJ-45 Pinout .....................................................................2-52
10/100/1000 Mbps Power over Ethernet Port – RJ-45 Pinout ..............................2-53
Overtemp Condition ......................................................................................................2-53
Chapter 3 Mounting OS6855-24 and OS6855-U24/U24X .................................................3-1
General Mounting Recommendations .............................................................................3-1
Recommended Clearances .......................................................................................3-1
Elevated Operating Ambient Temperatures .............................................................3-2
Reduced Air Flow ....................................................................................................3-2
Mechanical Loading .................................................................................................3-2
Circuit Overloading ..................................................................................................3-2
Reliable Earthing ......................................................................................................3-2
Air Flow Recommendations ...........................................................................................3-3
Chassis Air Flow for OS6855-U24 ...................................................................3-4