Delta Modulon DPH Series User Manual page 125

7
When the UPS performs DC BUS discharging, each power module's LED indicator
8
About three minutes later, the UPS will shut down, and the LCD and the tri-color
9
Switch OFF every external battery cabinet's breaker (Q5).
From Manual Bypass Mode to Online Mode
WARNING:
1. For parallel units, please follow 6.2.3 Bypass Mode Start-up Procedures
normally, follow the procedures below step by step.
2. For parallel units, ensure that every operation procedure mentioned below
is synchronized to all parallel UPSs.
parallel ones, please contact service personnel.
1
Switch ON every external battery cabinet's breaker (Q5).
2
Switch ON the Input Switch (Q1), Bypass Switch (Q2) and Output Switch (Q4).
3
After you switch on the Input Switch (Q1) and Bypass 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.
then each 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 the parallel communication cards, auxiliary power cards, power
modules and their LED indicators, please refer to Figure 6-1.
4
The LCD initial screen (see Figure 6-17) will appear within 40 seconds after the
Input Switch (Q1) and Bypass Switch (Q2) are turned on.
6-15
6 UPS Operation