EX 5/7/11RT Systems
3.4.2ECO Mode
Figure 3-5: ECO mode display.
15 17
OFFON
15
OFFON
15 16
OFFON
The main advantage of the ECO mode is that it reduces the consumption of electrical power by not running in the online mode. When this mode is selected, the system works as an offline UPS system, powered by Bypass source if Bypass source is inside user’s defined range. Outside this range, the UPS system will switch to online mode with 10ms interrupt.
Three possible cases:
1.If Normal AC source (Mains 1) and Bypass AC Source (Mains 2) are available:
15and 17 LED are ON.
The load is supplied with AC power but not protected in ECO mode.
2.If Normal AC source (Mains 1) is available, but Bypass AC source (Mains 2) is not available:
15LED is ON.
The audio alarm sounds intermittently.
The load is automatically supplied in Normal mode via the Normal AC input.
3.Both Normal and Bypass AC sources not available or out of tolerance:
15LED is ON.
16LED is ON.
The audio alarm sounds intermittently.
The load is powered by the battery power from the UPS.
The LCD display indicates the battery remaining backup time.
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