SSI

ERP2U Power Supply Design Guide, V1.0

8.4LED Indicators

STATUS

Required

There shall be a single bi-color LED OR two LEDs, one AMBER and one GREEN, on each hot swap power module to indicate power supply status. When AC is applied to the power supply and standby voltages are available the GREEN LED shall BLINK. The GREEN LED shall turn ON to indicate that all the power outputs are available. The AMBER LED shall turn ON to indicate that the power supply has failed, shutdown due to over current, or shutdown due to over temperature. Refer to Table 28: LED Indicators for conditions of the LED(s).

Table 28:

LED Indicators

 

POWER SUPPLY CONDITION

 

Power Supply LED(s)

 

 

 

AMBER

 

GREEN

No AC power to all PSU

 

OFF

 

OFF

No AC power to this PSU only

 

AMBER

 

OFF

AC present / Only Standby Outputs On

 

OFF

 

BLINK

Power supply DC outputs ON and OK

 

OFF

 

ON

Power supply failure (includes over

 

ON

 

OFF

voltage, over temperature)

 

 

 

 

Current limit

 

ON

 

OFF

The LED(s) shall be visible on the power supply’s exterior face. The LED location shall meet ESD requirements. LED shall be securely mounted in such a way that incidental pressure on the LED shall not cause it to become displaced.

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Intel ERP2U manual LED Indicators, Power Supply LEDs