Publicidad
Idiomas disponibles
Idiomas disponibles
Troubleshooting
6.2 EVENTS LOG
In addition to the general alarms, the UPS has an event log system that stores up to 1000 events
in its memory. The main events recorded are mentioned below.
Mains line unavailable
Battery test failure
Running battery test
Low battery
Critical battery
Battery test OK
Battery test not executed
Inverter OFF
Inverter overload (> 100 %)
Inv overload time exceeded
Enclosure overtemp
Maintenance overdue
Emergency UPS off
Save mode enabled
Bypass switch overload (> 100 %)
Bypass switch overload time exceeded EPO command (local)
Manual bypass switch closed
PFC overload (> 100 %)
PFC overload time exceeded
Incorrect reserve phase sequence
Reserve not available
Transfer to load command
6.3 FAULTS RELATED TO THE LOAD NATURE
The normal behavior of the UPS for specific loads is often incorrectly interpreted by the users
as a UPS failure. The most common situations are described below:
The UPS is left with the critical load powered by the reserve line, even if the inverter subset
„
is operating correctly. That may occur in case of excessive current peaks at the output. This
behavior causes transient voltage drops, which - if repetitive - cause the load to be switched
to the reserve line.
After three attempts to return the load to the inverter, the system locks the static switch, keeping
the load on the reserve line, protecting the inverter. Therefore, it is necessary to investigate
the load current profile and eliminate the causes of the overcurrents.
NOTE!
It is recommended that the peak of the load current do not exceed its RMS
value three times.
The regulation of the UPS output voltage is not ideal. That may occur in case of an excessively
„
unbalanced load and/or high harmonic distortion.
56 | Enterprise
Table 6.2: Main events recorded in the UPS
Static switch locked
Load in the reserve
Inverter load
Main UPS
Slave UPS
Load not fed
Input section not active
High enclosure temperature warning
High battery temperature alarm
High battery temperature warning
High temperature alarm in the PFC IGBT
High PFC IGBT temperature
Critical INV IGBT temperature
High INV IGBT temperature
IGBT overtemperature protection
EPO command (relay board 1)
EPO command (relay board 2)
No Sync
Synchronism OK
Pre-charge fault
Auto-start enabled
Auto-start finished
Auto-start interrupted
Auto-start fault
System startup performed
System start fault
System shutdown performed
Failed system shutdown
Low protection power supply
Switch on inverter command
Inverter switch off command
Switch to inverter command
Switch to reserve command
Battery test command
EPO reset command
Switch on pre-charge command
Switch off pre-charge command
Switch on PFC command
Switch off PFC command
Application reset command
Shut down system command
Publicidad
