Delta DPS-500K, User Manual

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3 - 6
Ultron DPS Series
3.5 ECO Mode
You can only use ECO mode for a single unit but not for parallel units. Please refer to 8.4
Main Screen and 8.7.2 Output Setup .
LOAD
BYPA.
MAIN
Q3 Switch
Q2 Switch
Q1 Switch
Rectifier Inverter
Circuit
Breaker
Batteries
STS
Q4 Switch
(Figure 3-5: Path of Electrical Power through the Single UPS in ECO Mode)
In ECO mode, when bypass AC source’s input voltage and frequency are within the range
of rating voltage ±10% and rating frequency ±5Hz, the UPS works in bypass mode and
LEDs illuminate as follows.
Fault
Otherwise, the UPS will work in normal mode. Under these circumstances, LEDs illuminate
as follows.
Fault