Vertiv™ | Liebert® STS2/PDU
™
User Manual | Rev. 6 | 10/2017 136
CB2 (S2) OPEN
Circuit Breaker 2 (for Source 2) Open
Circuit Breaker 2 is not closed. CB1 is only assigned to Source 2.
Check that the Circuit Breaker 2 switch is in the desired position.
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.
CB4 (S1 BYP) CLOSED
Circuit Breaker 4 (Source 1 Bypass Breaker) Closed
Circuit breaker 4 is not open. The input from Source 1 is bypassing the Liebert STS2/PDU.
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.
CB5 (S1 BYP) CLOSED
Circuit Breaker 5 (Source 2 Bypass Breaker) Closed
Circuit breaker 5 is not open. The input from Source 2 is bypassing the Liebert STS2/PDU.
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.
CB3 (OUTPUT) OPEN
Circuit Breaker 3 (Output breaker) Open
Circuit breaker 3 is not closed. This circuit breaker is assigned to the output load. The power flow to the load
cannot flow through the Liebert STS2/PDU.
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.
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