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Chapter 2 Faults and Troubleshooting Innovation Series Medium Voltage GP Type - G Drives GEH-6385
No. Name Type Description
85 Flux req while flt Alarm
The Flux req while flt alarm occurs when a flux command is issued and a trip
fault is present in the drive. The alarm may also occur when a flux command
is issued at the same time a diagnostic test (cell test, pulse test, autotune) is
active.
Primary causes:
The external application layer issues an inappropriate flux enable request.
86 AC line over
voltage
Trip The AC line over voltage trip fault occurs when the control firmware detects
that the magnitude of the AC line is above the value of Line OV fault level,
which has a suggested value of 117% of nominal.
The voltage magnitude used for this comparison is a processed by a low-pass
filter. This filter is set to 1.2 rad/sec as a default, so transient over-voltages
are allowed above the threshold value without causing this trip fault.
Primary causes:
AC line voltage is excessive.
Possible configuration faults:
Source has been applied at a voltage other than that set by the factory.
Possible board failures:
VATF-SRC
FOSA
BICM
DSPX
87 AC line voltage
high
Alarm The AC line voltage high alarm occurs when the control firmware detects that
the magnitude of the AC line is above the value of Line OV alarm level, which
has a suggested value of 112% of nominal.
The voltage magnitude used for this comparison is a low-pass filtered version
of the fastest version. The filter is set to 1.2 rad/sec as a default, so transient
voltage above the alarm turn-on value can occur without causing this alarm.
This alarm will cease once the filtered value of voltage magnitude has
decreased to below Line OV alarm clear, which has a suggested value of
110% of nominal.
Primary causes:
AC line voltage is marginally excessive.
Possible configuration faults:
Source has been applied at a voltage other than that set by the factory.
Possible board failures:
VATF-SRC
FOSA
BICM
DSPX