Eco Mode_ Single Input_ Parallel Units - Delta Modulon DPH Series User Manual

3.1.13 ECO Mode_ Single Input_ Parallel Units

To activate ECO mode, please refer to 6.2.5 ECO Mode Start-up Procedures, 7.6 Main
Screen and 7.10.2 Mode Setting.
In ECO mode (parallel), when each parallel UPS's bypass input voltage and frequency
are within the range of rating voltage ±10% and rating frequency ±3Hz respectively, each
parallel UPS works in Bypass mode; otherwise, each parallel UPS runs in On-Line mode.
During ECO mode (parallel), each UPS's tri-color LED illuminates green and each UPS's
LCD shows the text 'ECO' in the upper right corner. Please see Figure 3-13 for the path of
electrical power through the parallel UPSs in ECO mode.
1
MAIN
Batteries
2
MAIN
Batteries
(Figure 3-13: ECO Mode Diagram_ Single Input Parallel Units)
Modulon DPH Series
Q3
Static Switch
Q2
Rectifier
Q1
Q5
Q3
Static Switch
Q2
Rectifier
Q1
Q5
3-14
Inverter
Q4
Inverter
Q4
LOAD