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Level 03c, May 2011
Computer room emergency power off (EPO)
When the internal battery backup feature is installed and the room disconnecting
means / EPO is tripped, the batteries will engage and the computer will continue to
run. It is possible to attach the computer room disconnecting means / EPO system
to the machine UEPO switch. When this is done, tripping the room disconnecting
means / EPO will disconnect all power from the line cords and the internal battery
backup unit. In this event all volatile data will be lost.
To incorporate the IBF into the room disconnecting means / Emergency Power Off
(EPO) systems, a cable must be made to connect to the back of the system UEPO
panel. The following diagram illustrates how this connection is made.
Room UEPO Switch Schematic
In this figure an AMP connector 770019-1 is needed to connect to the system
UEPO panel. For room disconnecting means / EPO cables using wire sizes #20
AWG to #24 AWG use AMP pins part number 770010-4. The permissible resistance
of the customer connection is 5 Ohms Maximum (~200' of #24 AWG).
4
3
2
1
AMP Part Number -- 770019-1
Contact Number
2 Pole Normally-closed Pushbutton
Chapter 5. Power requirements
45
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