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 parallel UPS's bypass input voltage and frequency
are within the setup range (default: voltage ±10% and frequency ±3Hz), 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 3-26 for the path of electrical power
through the parallel UPSs in ECO mode.
1
BYPA.
MAIN
Batteries
2
BYPA.
MAIN
Batteries
(Figure 3-26: ECO Mode Diagram_ Dual Input Parallel Units)
Q3
Static Switch
Q2
Rectifier
Q1
Q5
Q3
Static Switch
Q2
Rectifier
Q1
Q5
3-27
Inverter
Q4
Inverter
Q4
3 Operation Modes
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