LCD Display Select Switch, Operation on Overload

LCD DISPLAY SELECT SWITCH

Momentarily press the "SELECT" switch on the front panel to browse through different power readings on the LCD Display. The LCD Display will show which one of four operational modes your UPS is currently in: Normal, Economy, On-Battery, or Bypass. Also, a syou press the "SELECT"switch, the LCD Display will browse through load. input, bypass, output and battery conditions.

"NORMAL"MODE OPERATION "ON-BATTERY" MODE OPERATION

"ECONOMY'MODE OPERATION "ON BYPASS" MODE OPERATION

OPERATION ON BYPASS-VOLTAGE OUT OF RANGE

While in Bypass Mode, the UPS monitors the input voltage, which on Bypass equals the output voltage. If the output voltagepasses out of an acceptable range (between 15%higher and 20% lower than nominal), the UPS displays the condition on its LCD and stops supplying output power to its load. If power levels return to an acceptable level. the UPS resumes supplying power to the load, and its LCD reports that output voltagewas too high or too low a t one time, but has returned to nominal.

Bypass Voltage Condition	LCD Display Message
>15Oh Higher than Nominal	BYPASS AC TOO HI
>20% Lower than Nominal	BYPASS AC TOO M
Was Too High. Now Nominal	BYPASS AC WAS HI
Was Too Low. Now Nominal	BYPASS AC WAS LO

OPERATION ON OVERLOAD

When the UPS detects an output overload, it will commence a countdown (the length of time depending on the severity of the overload). If the UPS is still overloaded a t the end of the countdown, the UPS will automatically shut down and go into Bypass Mode.

Overload Condition		LCD Display Message	Countdown to Shutdown
102%	- 125%	Overload 102%	1 minute
		Load=XXXOhX.XXKW
125%	- 150%	Overload 125%	30 seconds
		Load=XXXOh XXXKW
>150%		Overload 150%	2 seconds
		Load=XXXOhX.XXKW