Return Of Ac Input Power; Setting High Effi Ciency Mode; Confi Guring Bypass Settings - Eaton 9SX Series Installation And User Manual

5. Operation
Low-battery warning
• The indicator illuminates solid.
• The audio alarm beeps every three seconds.
The remaining battery power is low. Shut down all applications on the connected equipment because
automatic UPS shutdown is imminent.
End of battery backup time
• LCD displays "End of backup time".
• All the LEDs go OFF .
• The audio alarms stops.
Bypass mode
In the event of a UPS overload or internal failure, the UPS transfers your equipment to utility power. Battery
mode is not available and your equipment is not protected; however, the utility power continues to be
passively fi ltered by the UPS. The
Depending on overload conditions, the UPS remains in Bypass mode for at least 5 seconds and will stay in
this mode if three transfers to Bypass occur within 20 minutes.
The UPS transfers to Bypass mode when:
• the user activates Bypass mode through the front panel,
• the UPS detects an internal failure,
• the UPS has an overtemperature condition,
• the UPS has an overload condition listed in table 6 on page 54.
The UPS shuts down after a specifi ed delay for overload conditions listed in table 6 on page 54.
The UPS remains on to alarm the fault.
5.5

Return of AC Input Power

Following an outage, the UPS restarts automatically when AC input power returns (unless the restart function
has been disabled) and the load is supplied again.
5.6 Setting High Effi ciency mode
In High Effi ciency mode, the UPS operates normally on Bypass and transfers to Online (or Battery) mode in
less than 10 ms when utility fails. Transfers to High Effi ciency mode will be active after 5 minutes of Bypass
voltage monitoring: if Bypass quality is not in tolerance, then the UPS will remain in Online mode.
Eaton recommends to use the HE mode only to protect IT equipment.
To set the High Effi ciency mode:
1. Select Settings, In/Out settings, and High Effi ciency mode.
2. Select Enabled and Enter to confi rm.
3. The UPS transfers to High Effi ciency mode after 5 minutes.
5.7 Confi guring Bypass settings
The following settings are available for confi guring Bypass operation.
Bypass Voltage Low Limit
The default disables a transfer to Bypass if the measured bypass voltage level is below the nominal output
voltage minus 20%. You can confi gure the setting for another voltage value. This setting can be overruled by
the "Qualify Bypass" setting.
Bypass Voltage High Limit
The default disables a transfer to Bypass if the measured bypass voltage level is above the nominal output
voltage plus 15%. You can confi gure the setting for another voltage value. This setting can be overruled by
the "Qualify Bypass" setting.
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indicator illuminates.
614-20306-00 - 9SX 0-6 KVA EMEA_EN