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Troubleshooting
4–10
153378
XX52
Matrix Gate
H
The CCU2 controller sends digitized
timing signals for gating the IGBT’s
via the driver board and bidirectional
fiber optic communication. This fault
indicates that the GT100 has
detected that an IGBT gate drive
fault has occurred on the Matrix. The
first two digits of the fault code
indicate the particular IGBT that
reported the fault, as follows:
• 0152 (A+)
• 0252 (A-)
• 0452 (B+)
• 0852 (B-)
• 1052 (C+)
• 2052 (C-)
If more than one IGBT faults
simultaneously, the two first digits
are added in hexadecimal form to
indicate that the gate drive fault has
occurred in more than one phase,
thus the error code will contain the
summation of the faulted phases.
• Fiber-optic harness is
loose or disconnected
• CCU2 ±15 Vdc Power
Supply is defective
• P1 on driver board is
loose or disconnected
XX53
Unused Matrix Over
Current
H
Fundamentally, an Unused Matrix
Gate Fault should not occur,
however if it does, it is generally
indicative of a CCU2 malfunction.
• 0153 (A+)
• 0253 (A-)
• 0453 (B+)
• 0853 (B-)
• 1053 (C+)
• 2053 (C-)
If more than one phase faults
simultaneously, the two first digits
are added in hexadecimal form to
indicate an over current condition in
more than one phase, thus the error
code will contain the summation of
the faulted phases.
• CCU2 malfunction
Table 4-1
Fault Codes
Error
Code Fault
Source(s)
Fault Type
H=Hardware
S=Software
Fault Description
Possible Causes
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