User manual

Positive DC bus voltage over 450V.
Positive DC bus voltage less than 325V.
Negative DC bus voltage over –450V
(absolute value).
 Screen 4.42: This alarm appears when the UPS is blocked for any reason. This condition blocks also
the rectifier.
 Screen 4.43: After 3 times shutting down the rectifier for desaturation and retry, this alarm will
appear indicating rectifier blocked.
 Screen 4.44: If an error in the initial rectifier ramp is detected during the PFC start up, this alarm
will appear blocking also the rectifier.
 Screen 4.45: There is a command from the microprocessor to the DSP, with no response from the
rectifier module of the DSP. The rectifier will block.
 Screen 4.46: After 4 times shutting down the rectifier because of (*) DSP Internal Error in the
rectifier module, this alarm will appear indicating rectifier blocked.
 Screen 4.47: During the start up there is an input contactor test. If this test ends unsuccessfully
the rectifier will be blocked.
 Screen 4.48: If the output voltage ramp doesn’t work properly during the inverter start up the
inverter will be blocked.
 Screen 4.49: This alarm appears when there is an offset voltage higher than 8V, in any phase of the
inverter output voltage phase to neutral. Then the inverter will be blocked.
 Screen 4.50: This alarm appears when the UPS is blocked for any reason. This condition blocks also
the inverter.
 Screen 4.51: After 3 times shutting down the inverter for desaturation and retry, this alarm will
appear indicating inverter blocked.
 Screen 4.52: There is a command from the microprocessor to the DSP, with no response from the
inverter module of the DSP. The inverter will block.
 Screen 4.53: After 5 times shutting down the inverter because of (*) DSP Internal Error in the
inverter module, this alarm will appear indicating inverter blocked.
 Screen 4.54: This alarm appears when the rectifier is blocked for some
reasons that can also blocks the UPS.
 Screen 4.55: The alarm appears when the DSP doesn’t response to the microprocessor during the
initial procedure before the start up.
 Screen 4.56: There is a command from the microprocessor to the DSP, with no response from the
UPS module of DSP. The UPS will block.
 Screen 4.57: This alarm appears when the inverter is blocked for some reasons that can also blocks
the UPS.
 Screen 4.58: There is an internal error in the communication channel between microprocessor and
DSP. This condition blocks the UPS.
 Screen 4.59: This alarm appears when, in a parallel system, one UPS goes to battery mode. After
some period of time, the UPS will shut down.
 Screen 4.60: When an overtemperature is detected by the PFC or inverter temperature sensors,
first the inverter will be turned off automatically after 1 minute time (alarm 4.31). If one minute later