Delta Modulon DPH 200kVA, User Manual, Page: 137 / 232

6-19
6
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UPS Operation
4
After you switch ON the UPS’s bypass switch (Q0), Delta or non-Delta external
maintenance bypass cabinet’s input breaker or switch (Q1) and bypass breaker or
switch (Q2), each auxiliary power card’s LED indicator will illuminate green and the
following status will occur simultaneously.
1. The system and each power module will start initialization. After each power module
finishes initialization, each power module’s fans will start running, each power module
will start establishing DC BUS voltage and each power module’s LED indicator will
illuminate green.
2. Each parallel communication card’s LED indicator will illuminate red first and then
each parallel communication card will start initialization. After initialization, the
master parallel communication card’s LED indicator will illuminate green and the
backup communication card’s LED indicator will illuminate yellow.
For the locations of parallel communication cards, auxiliary power cards, power modules
and associated LED indicators, please refer to
Figure 6-1
.
5 The LCD initial screen (see
Figure 6-21
) will appear within 40 seconds after the UPS’s
bypass switch (Q0), Delta or non-Delta external maintenance bypass cabinet’s input
breaker or switch (Q1) and bypass breaker or switch (Q2) are turned on.
(Figure 6-21 : LCD Initial Screen)
6 After 20 seconds of LCD initialization, the LCD will enter the Main Screen . For the Main
Screen information, please refer to
7.6 Main Screen
.
Now, each power module keeps running and its LED indicator remains green. After
each power module finishes establishing DC BUS voltage, the charger will start to
charge the batteries.
If the bypass AC source is within the normal range, the UPS will transfer to run in
bypass mode, the LCD screen will show as
Figure 6-22
and the tri-color LED indicator
will illuminate yellow. For the location of the tri-color LED indicator, please refer to
Figure 2-11
.