Chapter 1: Introduction
12
Outlets
A small LED adjacent to each outlet indicates the outlet or PDU state. The PDU is shipped from the factory with all outlets
turned ON.
Rackmount PDU
Compact PDU
The table below explains how to interpret different outlet LED states.
LED state
Outlet status
What it means
Not lit
Powered OFF
The outlet is not connected to power, or the control circuitry's power supply
is broken.
Red
OFF
The outlet is turned off and power is available when the outlet is turned on.
Green
ON and LIVE
LIVE power. The outlet is on and power is available.
Green flashing
ON and LIVE
The current flowing through the outlet is greater than the upper warning
(non-critical) threshold.
Cycling through Red,
Green and Yellow
n/a
The PDU has just been plugged in and its management software is
loading. LED color cycling does not interrupt power to outlets. It is an
indication of firmware loading.
Note: When a PDU powers up, it proceeds with the power-on self test and software loading for a few moments. At this time,
the outlet LEDs cycle through different colors. When the software has completed loading, the outlet LEDs show a steady
color and the front panel display illuminates.
Outlet LEDs
Outlet LEDs