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 3-29 for the path of electrical power through the parallel UPSs in ECO mode.
1
BYPA.
MAIN
Batteries
2
BYPA.
MAIN
Batteries
Modulon DPH Series
Delta or non-Delta External Maintenance Bypass Cabinet
Q3
UPS
Q2 Q0
Q1
Q5
Delta or non-Delta External Maintenance Bypass Cabinet
Q3
UPS
Q2 Q0
Q1
Q5
(Figure 3-29: ECO Mode Diagram_ Dual Input Parallel Units)
Static Switch
Rectifier Inverter
Static Switch
Rectifier Inverter
3-30
Q4
Q4
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