Alarm and fault messages
4.2 Alarm and fault messagesAlarm and fault messagesAlarm and fault messages
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92
DC overvoltage protection has
responded (or fuse (if installed) has
tripped)
Fault Overvoltage (lightning strike) has occurred
93 Fast Stop activated or overvoltage on
medium-voltage transformer Fault Fast Stop button pressed, fault in cooling system
of medium-voltage transformer
94 Profibus error Fault
95 Grid frequency outside tolerance Fault Phase sequence is anti-clockwise, grid failure,
parameter setting error
96 Grid voltage outside tolerance Fault
Grid voltage outside tolerance (possibly grid
failure as well), voltage measurement error,
parameter setting error
97
No checkback from DC link contactor
or failure of cooling fan in the
container
Fault DC link contactor defective, signal cable
defective, container fan defective
98 Symmetry fault in the PV field Fault Fault in at least one PV field string
100 Image in the display (WinCC) No fault (generated by the control unit)
LED
"ISO"
flashing
Insulation fault in the PV field (alarm) Alarm Cable damaged, module damaged, rain
LED
"ISO" lit
steadily
Insulation fault in the PV field (fault) Fault Cable damaged, module damaged, rain