Liebert Static Transfer Switch 2 Installation, Operation & Maintenance Manual page 137

100-1000 amp, 50-60 hz
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If this alarm is set for manual reset mode, the alarm continues to show as active after the current returns to nominal,
still inhibiting transfers. You will need to manually reset the alarm. 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.
The alarm has triggered a message to be sent to the modem, if so configured.
S2 I-PEAK
Current Peak on Source 2
The peak current from Source 2 has exceeded the set point as defined in the I-PK Xfer Lockout setting under User
Settings.
Transferring to Source 1 has been inhibited.
Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the STS2
system from a terminal, type SH and press RETURN on your keyboard to turn off the audible alarm.
This event and the system status surrounding it have been written to a History Log if the History Logs were not already
full. This event was also written to the Event Log, if so configured.
If this alarm is configured to automatically reset under the set points for User Settings, the alarm clears itself when the
I-Peak condition clears.
If this alarm is set for manual reset mode, the alarm continues to show as active after the current returns to nominal,
still inhibiting transfers. You will need to manually reset the alarm. 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.
The alarm has triggered a message to be sent to the modem, if so configured.
SOURCES OUT OF SYNC
Sources out of synchronization.
The phase difference between Source 1 and Source 2 has exceeded the deviation as set for MANUAL MAX XFER
PHASE ANGLE under User Settings.
A manual transfer cannot take place while the sources are not synchronized.
Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the STS2
system from a terminal, type SH and press RETURN on your keyboard to turn off the audible alarm.
The 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.
LOAD ON ALT SOURCE
STS2 load on the alternate source.
The static transfer switch is running on the alternate power source. Check the Event Log to determine the reason for
the transfer from the preferred source.
Another event has caused the system to transfer to the alternate source. The system returns the load to the preferred
source either automatically or manually, depending on how the system is configured.
In automatic reset mode, the STS2 automatically retransfers to the preferred source after the causal condition clears.
In manual reset mode, the system remains on the alternate source after the causal event clears until you select
RESET from the touchscreen, or enter CA (Clear Alarms) from a service terminal.
Event Message Help Text
125

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