Delta DPS-400K - Battery Mode Start-Up Procedures (Parallel)

7-17
7
UPS Operation
7
After you complete the normal mode start-up procedures, each UPS’s LEDs illuminate
as follows.
Fault
7.2.2 Battery Mode Start-up Procedures (Parallel)
1
Turn on the circuit breakers or fuses of all external battery cabinets. Turn off each
UPS’s Manual Bypass Switch (Q3) and turn on each unit’s Output Switch (Q4).
2
Press each unit’s ON button on the control panel for three to ten seconds and
release it after you hear one beep. Each UPS’s LCD shows the following screen.
BYPA.
MAIN
2010 - 06 - 01
11 : 59 : 59
UNIT : #1.1
SELF DIAGNOSIS
TO BROWSE EVENT
(004)
PRESS
3
Each unit’s power module starts running, DC BUS voltage begins establishing, and
inverter starts up with the default frequency. During inverter start-up process, each
unit’s Inverter Start-up LED
and Battery Power Supply LED illuminate
4
After each unit’s inverter starts up, each UPS will transfer into battery mode. At this
moment, all fans start running, each UPS’s Inverter Power Supply LED
lights up
and each UPS’s LCD shows the following screen.