Intel® Server System S7000FC4UR TPS Main Board
Revision 1.0
23
2.2.20 Circuit Breaker Type Jumper
Jumper J6F1 is used to set a threshold for power consumption when operating the server with a
single power supply on a low-line 100/110/115/120/127VAC power circuit. This threshold is
required to ensure the power consumption of the server does not exceed the power that can be
supplied by a single AC power circuit. When the system has two power supplies installed, a
separate AC power circuit is needed for each power supply to guarantee the AC power circuit
capability is not exceeded.
When a server is connected to low-line power, the J6F1 jumper sets the following power
consumption thresholds:
Pins 1-2 covered: Sets the power consumption threshold to 1180 watts
Pins 2-3 covered: Sets the power consumption threshold to 1030 watts
Power consumption is based on the power consumed within the system. Power factors for
inefficiency are not included in the above figures.
Servers connected to high-line power (200/208/220/230/240VAC) do not have a power
consumption threshold. Under these conditions, jumper J6F1 should be set as follows:
100/110VAC rated circuit: cover pins 2-3
115/120/127VAC rated circuit: cover pins 1-2
200/208/220/230/240VAC rated circuit: cover pins 1-2
The power consumption threshold is most likely to be exceeded when all of the following
conditions are met:
The server is connected to a low-line power circuit
The server has a single power supply installed
The server is fully configured with four processors, 16 x 4 GB DIMMs, and all PCI slots
are filled
The server is running at maximum performance
If the power consumption threshold is crossed, the hardware throttles the processors to reduce
the power consumption to below the set threshold. The processor performance can be returned
to the full performance level by power cycling the server.
When two power supplies are installed, the required power is divided between them. By using
both circuits, the server can draw more power than the threshold limit for a single power supply.
The hardware reduces the amount of power consumed if one of the power supplies fails. This
ensures the system consumes less power than the threshold from the single operating power
supply. When a failed power supply is replaced, the system is again able to share the power
load and operate at full performance.
If the J6F1 jumper is set incorrectly, the following may occur:
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