OPERATION
Eaton 9910 UPS and EBM User's Guide S P-164000005 Rev 2
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Table 4. Configuration Settings (continued)
Default SettingAvailable SettingsDescription
Qualify bypass [Always] [Never] [Bypass Disabled]
If Always, Bypass operation is allowed when:
S Bypass voltages > the value set for Bypass Voltage Low Limit
S Bypass voltages < the value set for Bypass Voltage High Limit
S Bypass frequency > (nominal frequency -3 Hz)
S Bypass frequency < (nominal frequency +3 Hz)
S Inverter is synchronized with Bypass when unsynchronized
transfers are disabled by the value set for Unsynchronized
Transfers
If Never, Bypass operation is always allowed, if the utility is within
the UPS operating limits; voltage and frequency limits are not in
use. If Bypass Disabled, Bypass operation is prohibited.
Always
EBMs [0] [1]
See “Configuring the UPS for an EBM” on page 33.
0
Battery low alarm [Immediate] [2 min] [3 min] [5 min]
The battery low alarm is triggered when the set amount of backup
time (approximately) remains in the batteries.
3 minutes
Automatic battery
tests
[Enabled] [Disabled]
See “Running Automatic Battery Tests” on page 34.
Enabled
Clear alarm history The number after “Total events” shows how many events are
currently stored in the log. Press the OK button for 1 second to
reset the event count to zero and clear the log.
Not applicable
LCD contrast [-5] [-4] [-3] [-2] [-1] [+0] [+1] [+2] [+3] [+4] [+5]
The range adjusts the contrast between the background and the
text in the LCD.
+0
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