4

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IN LED (INPUT OK)

DC Line within range

Solid Green

DC Line UV condition

Off

Redundant Operation - PSU1 operating and PSU2 has input power removed

PSON High

Blinking Yellow (1:1)

Hot-Standby Mode

Blinking Yellow/Green (1:2)

Solid Yellow

Over temperature shutdown

Output over voltage shutdown (

Output over current shutdown (

Fan error (>15%)

Over temperature warning

Blinking Yellow/Green (2:1)

Minor fan regulation error (>5%, <15%)

Blinking Yellow/Green (1:1)

Redundant Operation - PSU1 operating and PSU2 has input power removed

Off (PSU2)

Table 1. LED Status

The front-end has 2 front LEDs showing the status of the supply. LED number one is green and indicates DC power is on or off,

while LED number two is bi-colored: green and yellow, and indicates DC power presence or fault situations. For the position of

the LEDs see Figure 5.

4.1 FRONT LEDS

4.2 GRAPHICAL USER INTERFACE

allowing the programming and monitoring of the PFE1100-12-054xD Front-End. The utility can be downloaded on

www.belpowersolutions.com and supports both the PSMI and PMBus™ protocols.

The GUI allows automatic discovery of the units connected to the communication bus and will show them in the navigation

tree. In the monitoring view the power supply can be controlled and monitored.

If the GUI is used in conjunction with the PFE1100-12-054xD Evaluation Kit it is also possible to control the PSON pin(s) of

the power supply.

Further there is a button to disable the internal fan for approximately 5 seconds (not implemented yet). This allows the user to

take input power measurements without fan consumptions to check efficiency compliance to the Climate Saver Computing

Platinum specification.