Omron BU1002SW, BU3002SW Interpreting beeps and displays, Displays and beeps in normal operation

3. Operation

3-3 Interpreting beeps and displays

								( ○ indicates the display is OFF)
1. Displays and beeps in normal operation								( ● indicates the display is ON)
								( indicates blinking)
No.	Status	Power supply	Bypass	Battery	Beep	Charging	Description	Solution
	indicator	output	operation	replacement
		lamp	lamp	lamp
1		○	○	○	None	OFF	No AC input.	－－
							Operation stopped.
2		○	○	○	None	ON	There is AC input.	－－
							Power switch is OFF.
3		●	○	○	None	ON	Power switch is ON.	－－
							Operating normally.

2. Displays and beeps while testing

4

5

●	○	○	None	OFF	Self-diagnostic test in progress.	－－
				Discharging
●	○	○	None	OFF	Auto battery test in progress.	－－
				Discharging

3. Displays and beeps during power failure or AC input error
				Intermittent		In Battery Mode due to power	Perform shutdown operations
6					OFF	failure or AC input error.
				4-second			for the connected devices
					Discharging	Output will stop if Battery
				intervals			and stop them.
						Mode continues.
7				Intermittent	OFF	(Same as above.)
				1-second	Discharging	Battery level is low, so output	(Same as above.)
				intervals		will soon stop.
					OFF	Battery is dead,
8				None		so output stopped.	Charge the battery.
					Discharging	(This is displayed only for
						a few seconds.)
						AC input voltage is too high	Use within the AC input voltage/
						(over).
9	○	○	○	None	(ON)		frequency range described
							in the specifications.
						AC input frequency is too high	→ See Page 88
						(over).
						AC input voltage is too low
						(under).
10	○	○	○	None	(ON)		(Same as above.)
						AC input frequency is too low
						(under).

4. Displays and beeps when there is an equipment failure

11

12

					There are too many connected
					devices and the rated capacity is
					exceeded. If this state continues
					for as long as or longer than the
					times described below,
					commercial power continues
			Intermittent		to be supplied through bypass
●	○	○		ON	operation (Note 1).	Reduce the number of connected
			0.5-second	or	・When connection capacity is	devices until the display appears
			intervals	discharging	at 100% or higher: Bypass
						as in status No. 3.
					operation begins after 10 seconds
					・When connection capacity is
					at 120% or higher: Output stops
					after 1 minute (Go to No.12)
					・When connection capacity is
					at 140% or higher: Output stops
					after 10 seconds (Go to No.12)
						Turn OFF the power switches of
○	○	○		ON	Output stopped due to exceeded	all devices connected to the unit,
			Continuous	or		reduce the number of connected
				discharging	connection capacity.	devices, and turn the power switch
						back ON again.

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