Operation
Switch Modes
After configuring, mounting and connecting your UPS System, you are able to operate it by switching between the following operating modes as appropriate to your situation:
AUTO/REMOTE: Switch to this mode when you need constant, uninterrupted AC power for connected lights, controllers or other equipment. Properly installed and maintained, the UPS System will contin- ue to
and to charge your connected batteries while utility- or generator- supplied AC power is present. Since the inverter is ON (but in Standby) in this mode, it will automatically switch to your battery
“BATT VOLT/CHRG CURR” LEDs: If the switch is in the “AUTO/REMOTE” position (normal setting for traffic applica- tions), the LEDs indicate the approximate charge level and voltage of your connected battery bank and alert you to several fault condi- tions. See Chart for charge and voltage levels.*
*When used in alternate mobile applications, the LEDs can indicate charge rate when the Operating Mode Switch is in the
LED Function with Switch in "AUTO/REMOTE" Position
Approximate Battery Charge Level*
system to supply inverter AC power to connected equipment in the absence of a utility/generator source or in over/under voltage situa- tions, such as in blackouts or brownouts.
OFF: Switch to this mode to shut down the UPS 
System completely, preventing the inverter from draw-
ing power from the batteries, and preventing utility AC
from passing through to connected equipment or charging the batteries. Use this switch to automatically
reset the unit if it shuts down due to overload or overheating. First remove the excessive load or allow the unit to sufficiently cool (applicable to your situation). Switch to “OFF”, then back to “AUTO/REMOTE”. If unit fails to reset, remove more load or allow
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| LEDs | Battery Capacity | |
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| Illuminated | (Charging/Discharging) |
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| Green | ||
1 |
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| Green & Yellow | ||
2 |
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| Yellow | ||
3 |
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| Yellow & Red | ||
4 |
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| Red | ||
5 |
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| All three lights off | ||
6 |
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| Flashing red | 0% (Inverter | |
7 |
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| shutdown)** | |
1 | 2 | 3 |
4 | 5 | 6 |
7 |
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unit to cool further and retry.
Optional Feature for Alternate Use of Tripp Lite Traffic
Indicator Lights
“LINE Green LED”: If the operating mode switch is 
set to “AUTO/REMOTE”, this light will ILLUMI- NATE CONTINUOUSLY when your connected equip- 
ment is receiving continuous AC power supplied from 
a utility/generator source.
If the operating mode switch is set to “CHARGE ONLY”, this light will BLINK to alert you that the unit’s inverter is OFF and will NOT supply AC power in the absence of a utility/generator source or in over/under voltage situations.
“INV” (Inverting) Yellow LED: This light will 
ILLUMINATE CONTINUOUSLY whenever connect- 
ed equipment is receiving
AC power (in the absence of a utility/generator source 
or in over/under voltage situations). This light will be 
off when AC power is supplying the load. This light will BLINK to alert you if the load is less than the Battery Charge Conserver (Load Sense) setting.
“LOAD” Red LED: This red light will ILLUMI- |
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NATE CONTINUOUSLY whenever the inverter is |
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functioning and the power demanded by connected |
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equipment exceeds 100% of load capacity. (Be sure to |
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size your UPS model properly for the traffic signal or |
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other loads it is expected to support.) The light will BLINK to alert |
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you when the inverter shuts down due to a severe overload or over- |
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heating. If this happens, turn the operating mode switch “OFF”; |
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remove the overload and let the unit cool. You may then turn the |
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operating mode switch to “AUTO/REMOTE” after it has adequate- |
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ly cooled. This light will be off when AC power is supplying |
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the load. | 5T |
*Charge levels listed are approximate. Actual conditions vary depending on battery condition and load. ** Inverter shutdown protects battery against damage due to excessive discharge.
Fault Condition |
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| LEDs | Fault |
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| Illuminated | Condition |
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1 | All three lights | Excessive discharge |
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| flash slowly* | (Inverter shutdown) | 1 | 2 |
2 | All three lights | Overcharge (Charger |
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| flash quickly** | shutdown) |
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*Approximately ½ second on, ½ second off. See Troubleshooting section. Inverter shutdown protects battery against damage due to excessive discharge.** Approximately ¼ second on, ¼ second off. Charger shutdown protects battery against damage due to overcharge. May also indicate a battery charger fault exists. See Troubleshooting section.
Resetting Your UPS System to Restore AC Power
Your UPS System may cease supplying AC power or DC charging power under certain conditions, especially in order to protect itself from overload or to protect your electrical system. To restore normal functioning:
Overload Reset: Switch operating mode switch to “OFF” and
remove some of the connected electrical load (ie: turn off some of the AC devices drawing power which may have caused the overload of the unit). Wait one minute, then switch operating mode switch back to “AUTO/REMOTE.”
Output Circuit Breaker Reset: Alternatively, check output circuit breaker(s) on the unit's front panel. If tripped, remove some of the elec- trical load, then wait one minute to allow components to cool before resetting the circuit breaker. See Troubleshooting for other possible reasons AC output may be absent.
Check Battery Voltage: Your UPS is designed to keep your connect- ed batteries constantly charged, so long as utility/generator power is present. In the absence of utility/generator power, or as a result of poor battery maintenance, low battery voltage may prevent AC out- put. As applicable, recharge or replace battery.