OnLine Power Power Wave 4 - Manual (Page 33)

6005-145 Rev. A 1-22
The front panel is located at the front of the PCB holder. It gathers the real time
information of the ELI and shows them clearly to the user. It also provides
switches for controlling and setting the ELI. Through this panel, the ELI can be
not only a stand alone machine supplying the load, but also closely monitored
by the user. Each part of the panel is explained below.
A: LCD display: Real time status, data or historical events are displayed on the
LCD. The ELI parameters, real time clock, inverter, and buzzer also can be
set through this LCD. The LCD is back-lighted by LEDs to provide a sharp
display. In order to lengthen the LED’s life time, the LED are automatically
shut off 3 minutes after no key is activated, but will light up again when one
of the up/down/enter key is pushed.
B: Status LEDs: 24 LEDs, representing all of the important information of the
ELI, provide the most up to date information to the user. Therefore these
LEDs are especially important when abnormal conditions occur. The 24
information items are as shown below:
INVERTER ON – inverter is running.
INVERTER SS – inverter static switch conducts while the reserve static
switch is opened.
SHORT CIRCUIT – ELI output is in short circuit state.
FUSE/OVER TEMP SD – inverter shutdown due to either fuse broken
or over temperature condition.
INVERTER FAIL SHUTDOWN – inverter shutdown due to inverter
output voltage too low.
BYPASS ON SHUTDOWN – inverter shutdown due to bypass breaker
being closed while the inverter is running.
HIGH DC SHUTDOWN – inverter shutdown due to overly high DC
bus voltage condition while the inverter is running.
OVERLOAD SHUTDOWN – inverter shutdown due to overload of the
inverter for a period over that which the inverter can endure; will
restart 7 seconds after overload removed.
70% LOAD – load connected to the output is at or over 70% of the ELI
rating.