Switches, Indicator Lights & Other Features

Switches, Indicator Lights & Other Features

(See Diagram 4, p. 28, to locate the following switches, indicator lights and other features.)

Switches

1.Operating Mode Switch: This switch selects the APS operating mode (either “AUTO/REMOTE”,“OFF” or “CHARGE ONLY”). See “Set Operating Mode Switch”, p. 8 to select the appropriate setting for this switch.

2.“CONFIGURATION SWITCHES”—DIP Switches: These four switches must be set for the type of battery your APS will be connected to and the voltage points at which your APS will switch to battery power. See “Configuration”, p. 5 to select the optimum settings for these switches.

Indicator Lights

3.“LINE”: This green light will turn continuously ON whenever connected equipment is receiving utility-supplied AC power and your APS is set to“AUTO/REMOTE”,meaning that it will automatically switch to battery power if AC power becomes unavailable. It will flash intermittently when connected equipment is receiving utility power and your APS’s Operating Mode Switch is set to “CHARGE ONLY” to indicate that the APS’s inverter is OFF and that the APS will not supply power from its batteries.

4.“INV”: This yellow light will turn continuously ON whenever connected equipment is receiving battery-supplied AC power. It will flash if the APS does not detect the minimum load necessary to activate the inverter.

5.“LOAD”: When your UPS is receiving utility-supplied AC power, this red light will turn continuously ON when the APS’s load is between 80% and 110% of capacity, to alert you that the inverter might not be able to support the load.The light will flash intermittently after the APS’s inverter shuts down due to a severe overload or overheating. If this hap- pens, turn Operating Mode Switch OFF. Remove the overload and let the unit cool.You may then turn the APS ON after it cools.

6.“BATTERY HI/MED/LO”: These THREE lights will turn ON in several sequences to show the approximate charge level and voltage of your connected battery bank and alert you to several fault conditions:

BATTERY CHARGE INDICATION (Approximate)
	Indicator	Charger Function	Battery Level
		(LINE ON)	(INV ON)
	Green	Float	High Charge State
	Green & yellow	Absorption (50% Done) High/Medium Charge State
	Yellow	Absorption	Medium Charge State
	Yellow & red	Bulk (50% Done)	Medium/Low Charge State
	Red	Bulk	Low Charge State
	All three lights off	Charger Inhibited	Very Low Charge State
	Flashing green	Equalizing Charge	N/A
	Flashing red	N/A	Low Battery Shutdown
	All three lights flash slowly*	Excessive discharge; check batteries

All three lights flash quickly** Overcharge; check charger

*Approximately 1/2 second on, 1/2 second off. See Troubleshooting section.

**Approximately 1/4 second on, 1/4 second off. See Troubleshooting section.