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Alarm 38:
The EPO (Emergency Power Off) switch is ON. The UPS and the static bypass are
switched off and no AC voltage present at the output anymore.
Alarm 39:
This message appears when, despite the three attempts to start up the UPS, a
short circuit is still detected at the output. UPS and static bypass switch are turned
off, there is no voltage at the output.
Alarm 40:
This alarm appears when there is a (*) DSP Internal Error in the UPS module,
for three times shutting down the UPS. The UPS blocks including the bypass,
so no AC voltage present at the output anymore.
Alarm 41:
This alarm appears when there is one of the following conditions:
• Positive DC bus voltage over 450 V.
• Positive DC bus voltage less than 325 V.
• Negative DC bus voltage over –450 V (absolute value).
Alarm 42:
This alarm appears when the UPS is blocked for any reason. This condition blocks
also the rectifier.
Alarm 43:
This message appears when, at the rectifier, the protection circuit has been
tripped three times in order to prevent a rectifier-IGBT overload. The rectifier is
now blocked.
Alarm 44:
If an error in the initial rectifier ramp is detected during the PFC start up
(Soft-Start), this alarm will appear blocking also the rectifier.
Alarm 45:
There is a command from the microprocessor to the DSP, with no response from
the rectifier module of the DSP. The rectifier will block.
Alarm 46:
After 4 times shutting down the rectifier because of (*) DSP Internal Error in the
rectifier module, this alarm will appear indicating rectifier blocked.