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

3.2.12 ECO Mode_ Dual 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 UPS's bypass input voltage and frequency are within
the range of rating voltage ±10% and rating frequency ±3Hz, each UPS works in bypass
mode; otherwise, each UPS runs in online mode. During ECO mode, 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 3-26 for the path of electrical power through the parallel UPSs in ECO
mode.
UPS 1
BYPA.
MAIN
Batteries
UPS 2
BYPA.
MAIN
Batteries
Modulon DPH Series
Q2
Q1
Q2
Q1
(Figure 3-26: ECO Mode Diagram_ Dual Input Parallel Units)
Static Switch
Rectifier Inverter
Static Switch
Rectifier Inverter
3-26
Q3
Q3
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