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6—4
Options 5, 6 – Input Voltage Tolerance
Use these two option switches to select the Esprit’s sensitivity to low/high input voltage conditions.
The Esprit will switch to battery power when the utility voltage falls outside the range selected.
The percentages shown in the table below are subtracted/added to the nominal voltage setting
as set by options 4, 5. The factory setting is 5=OFF, 6=OFF which selects the –15/+10% range.
Switch Setting Input Voltage Tolerance
5 (A) 6 (B) Low limit High limit
—— - 15% + 10%
*
— - 20% + 15%
—
*
- 10% + 10%
**
Custom
Indicators: (
*
) = Option On/illuminated ( — ) = Option Off/dark
Do not select the "Custom" setting (Option 5 & 6 both ON) unless you are instructed to do so
by MGE service.
Option 7 – Test Alarm
The normal state of this option is OFF. Turning it on will instruct the Esprit to issue a "User Test
Fault". This condition does NOT affect the UPS operation in any way, but it does close the Low
Battery contact on the DB9 communication port, and activates the FAULT indicator and audible
alarm (pattern short-short-long). You can use this option switch to test hardware connected to
the Low Battery contact without actually running the Esprit battery down.
To clear the User Test Fault, set this option to OFF, or follow the "Alarm Clear" procedure. Press
and hold the top button.
Option 8 – Limit run time on battery power
The normal setting for this option is OFF, which allows the UPS to operate on battery for the
maximum time possible. The Esprit run time on battery is limited only by the capacity of it’s battery
system and the battery state of charge.
If Option 8 is turned on, the Esprit will run a maximum of 15 minutes on battery power before
turning itself off. Actual run time may be less, depending on size of battery system and load.
Option 9 – Cold Start (allow UPS to run on battery power on startup)
When Option 9 is turned ON (factory setting), the UPS is allowed to start up on battery power
if the AC input voltage is not present or not of satisfactory quality. The ability to run on battery
power immediately upon startup is known as "cold start" capability.
If this option is turned OFF, the UPS will start up with its output OFF if input AC is not present or usable.
The output will not be turned on until input AC is present and usable. Once the UPS turns on it’s
output, a subsequent loss/disturbance of input AC will cause the UPS to run on battery power as usual.