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Troubleshooting
4–12
153378
0082
Matrix Not ON
S
This fault indicates that the GT100
has detected that the IGBT matrix
(FPGA) was not enabled after having
sent a command for it to turn on. The
CCU2 sends an acknowledge bit to
confirm the command is received.
This fault is primarily a watch-dog
between software and hardware to
ensure control of the IGBT matrix
(FPGA).
• Software acknowledge
bit not accepted
• FPGA inoperable
0083
Matrix Not OFF
S
This fault indicates that the GT100
has detected that the IGBT matrix
(FPGA) was not disabled after
having sent a command for it to turn
off. The CCU2 sends an
acknowledge bit to confirm the
command is received. This fault is
primarily a watch-dog between
software and hardware to ensure
control of the IGBT matrix (FPGA).
• Software acknowledge
bit not accepted
• FPGA inoperable
0090
Fast AC Freq Low
S
This fault indicates that the Utility
grid frequency is below or fell below
the minimum allowed value of
57.0 Hz (Fixed) for greater than 10
cycles (Fixed). This fault is auto-
clearing. Once the Utility grid
frequency has recovered within the
acceptable operating range, the
GT100 will qualify the value and
automatically clear this fault and
resume normal operation after
delay period.
• Utility grid frequency
fell below the
allowable limit.
0092
Fast AC Voltage
Low
S
This fault indicates that the utility
grid voltage is below or fell below
the minimum allowed value of 50%
(Fixed) of nominal Vac for greater
than 10 cycles (Fixed). This fault is
auto-clearing. Once the Utility grid
voltage has recovered within the
acceptable operating range, the
GT100 will qualify the value and
automatically clear this fault and
resume normal operation after a
delay period.
• Utility grid voltage fell
below the allowable
limit.
• Fuses -F4, F5, or F6 on
the Inrush Current
Limit Board are blown.
• P1001 on CCU2 is
loose or disconnected.
Table 4-1
Fault Codes
Error
Code Fault
Source(s)
Fault Type
H=Hardware
S=Software
Fault Description
Possible Causes
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