Vertiv Liebert STS2 - Page 140

Vertiv™ | Liebert® STS2/PDU
™
User Manual | Rev. 6 | 10/2017 130
S1 UV
Source 1 Under Voltage (fast detection).
The input voltage from Source 1 dropped below a set percentage of the nominal voltage, as set in the Fast UV
setpoint under the User Settings. An S1 Fail alarm was also issued and source transfer has been inhibited.
The load of the Liebert STS2/PDU has been transferred to Source 2.
Press SILENCE on the touchscreen to turn off the audible alarm, if so configured. If you are accessing the
Liebert STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the
audible alarm.
This event was written to the Event Log, if so configured.
The alarm has triggered a message to be sent to the modem, if so configured.
If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,
type CA and press RETURN on your keyboard.
S1 UV (RMS)
Source 1 Under Voltage (slow detection).
The input voltage from Source 1 remained below a set percentage of the nominal voltage for a designated
period, as set in the Slow UV Setting and Slow UV Detection Delay setpoints configured under the User
Settings. An S1 Fail alarm was also issued and source transfer has been inhibited.
The load of the Liebert STS2/PDU has been transferred to Source 2.
Press SILENCE on the touchscreen to turn off the audible alarm, if so configured. If you are accessing the
Liebert STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the
audible alarm.
The alarm is latched and must be reset after the voltage returns to the nominal voltage. If the Reset option is
not configured for AUTO (automatic reset), then the reset action must be done manually. When the voltage is
within acceptable parameters, touch the RESET button on the touchscreen. If you are accessing the unit from
a terminal, type CA and press RETURN on your keyboard.
This event was written to the Event Log, if so configured.
The alarm has triggered a message to be sent to the modem, if so configured.
S1 OV
Source 1 Over Voltage.
The input voltage from Source 1 exceeded a set percentage of the nominal voltage, as set in the OV Setting
and OV Detection Delay setpoints configured under the User Settings. An S1 Fail alarm was also issued and
source transfer has been inhibited.
The load of the Liebert STS2/PDU has been transferred to Source 2.
Press SILENCE on the touchscreen to turn off the audible alarm, if so configured. If you are accessing the
Liebert STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the
audible alarm.
This event was written to the Event Log, if so configured.
The alarm has triggered a message to be sent to the modem, if so configured.
If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,
type CA and press RETURN on your keyboard.