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| Liebert
®
ITA2
™
User Manual |
62
Bypass phase reversed
The bypass voltage phase sequence is reversed. Normally, Phase B lags Phase A by 120
degrees, and Phase C lags Phase B by 120 degrees.
Check that the UPS bypass input phase sequence is correct. If not, just modify it.
Bypass overcurrent
The bypass current exceeds the rated value. Overload delay time is up, inverter shuts
down.
Parallel bypass cable
connection abnormal
The bypass phase number is different from the output phase number under
Monitor
.
Verify that the bypass cables connection is the same as the configured phase number.
Bypass abnormal
Maybe caused by bypass voltage and frequency outside of range, bypass power-off and
incorrect bypass cables connection.
Verify that the bypass voltage and frequency are within the setting range.
Verify the bypass cables connection.
Bypass abnormal in ECO
mode
The ECO mode is available, and the bypass voltage and frequency are outside of the
setting range. Check that the bypass input voltage and frequency are within the setting
range.
Output LPE short
The output and enclosure are shorted. Check whether the output cables connection and
the enclosure are shorted.
Output disabled
The system is in standby state, and the dry contact shutdown is enabled. Determine
whether the shutdown dry contact is enabled.
Version incompatible
The version between monitoring board and DSP board is incompatible.
Electric leak alarm
Short circuit between bus and enclosure or between battery and enclosure. Determine
whether the bus and battery cables connection are shorted with the enclosure.
On maintenance bypass
The dry contact in maintenance bypass state is activated.
Battery mode
The UPS is on battery, and the inverter starts.
Bypass mode
The UPS is on bypass.
System overload
The parallel system load capacity is larger than the max. load capacity outputed by
parallel sets. Confirm the parallel system load capacity, if it is overloaded, reduce the load
by disconnecting equipment.
Loss of redundancy
After the parallel redundancy is enabled, the system load capacity is larger than the rated
load of (online set minus one).
Load sharing abnormal
Load sharing is abnormal in parallel system.
System parallel settings
async
Verify that parallel setting parameters of each unit are the same.
Local parallel settings async
Verify that the Settings Screen is the same on each UPS in the system.
LBS abnormal
Determine whether the LBS cables are normal, the system is in standby state, or the
system is on bypass and the bypass is unable to trace.
REPO
Shutdown caused by the REPO terminal normally closed contact open.
Bypass phase reversed
During parallel connection, the bypass phase sequence is not the same. Check the parallel
bypass cable connection.
System battery low pre-
warning
In parallel system, all the devices powered by the battery inverter have battery low-
voltage pre-warning
Battery test started
The battery periodic self-test or manual self-test started.
Battery test stopped
The battery self-test or manual self-test finished.
EOD turn off
The inverter is Off due to EOD. Shut down the connected load.
Guaranteed shutdown
Under forced EOD mode, the battery discharging finished, then system shuts down.
Table 17
UPS alarm messages
(continued)
Alarm message
Description
Summary of Contents for Liebert ITA2-08KRT208
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Page 40: ...Vertiv Liebert ITA2 User Manual 34 Figure 31 Status page menus...
Page 70: ...Vertiv Liebert ITA2 User Manual 64 NOTES...
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