Power Supply Status Led; Server Board Power Connectors; Table 22. Over Voltage Protection (Ovp) Limits - 750W Power Supply; Table 23. Led Indicators - Intel R1000SPO Series Technical Product Specification

Table 22. Over Voltage Protection (OVP) Limits – 750W Power Supply
3.3.13.3 Over-temperature Protection (OTP)
The power supply will be protected against over temperature conditions caused by loss of fan cooling or
excessive ambient temperature. In an OTP condition the PSU will shut down. When the power supply
temperature drops to within specified limits, the power supply shall restore power automatically, while the
12VSB remains always on. The OTP circuit must have built in margin such that the power supply will not
oscillate on and off due to temperature recovering condition. The OTP trip level shall have a minimum of 4C
of ambient temperature margin.
3.3.14

Power Supply Status LED

There is a single bi-color LED to indicate the power supply status on the Redundant Power Supply Modules.
The LED operation is defined in the following table.
3.4

Server Board Power Connectors

The server board provides several connectors to provide power to various system options. The following
sub-sections will provide the pin-out definition; and a brief usage description for each.
The main power supply connection uses an SSI-compliant 2x12 pin connector.
Two additional power-related connectors also exist:
One SSI-compliant 2x4 pin power connector to provide 12-V power to the CPU voltage regulators and

memory.
One SSI-compliant 1x5 pin connector to provide monitoring of the power supply.

27
Intel® Server System R1000SPO Product Family TPS
OUTPUT VOLTAGE
+12 V
5VSB

Table 23. LED Indicators

Power Supply Condition
Output ON and OK
No AC power to all power supplies
AC present / Only 12VSB on (PS off) or PS in Cold
redundant state
AC cord unplugged or AC power lost; with a second
power supply in parallel still with AC input power.
Power supply warning events where the power supply
continues to operate; high temp, high power, high
current, slow fan.
Power supply critical event causing a shutdown; failure,
OCP, OVP, Fan Fail
Power supply FW updating
PROTECTION POINT [ V]
13.6V ~ 15.0V
5.6V ~ 6.5V
LED State
GREEN
OFF
1Hz Blink GREEN
AMBER
1Hz Blink Amber
AMBER
2Hz Blink GREEN