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Fault Code Descriptions
152607 4–9
0048 Bad Memory S This fault indicates that the PV225S
has detected that the SRAM DIMM
on the CCU2 controller board has
failed. The CCU2 performs a series
of tests to confirm the validity of the
SRAM and the memory module has
produced errors.
• Internal SRAM error
• CPU error
XX50 Left Matrix Gate S The CCU2 controller sends digitized
timing signals for gating the IGBT’s
via the IPM driver board and bi-
directional fiber optic
communication. This fault indicates
that the PV225S has detected that an
IGBT gate drive fault has occurred in
the left matrix. An internal protection
circuit within the individual IPM
devices of the IGBT matrix also
generates a gate fault as the result of
either short circuit, over current, over
temperature, or an under voltage
condition.
The first two digits of the fault code
indicate the particular IGBT that
reported the fault, as follows:
• 0150 (A+)
• 0250 (A–)
• 0450 (B+)
• 0850 (B–)
• 1050 (C+)
• 2050 (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
• PS1 ±15 Vdc Power
Supply is defective
• P1 on IPM driver board
is loose or disconnected
• IPM internal error
condition
Table 4-1
Fault Codes
Error
Code Fault Source(s)
Fault Type
H=Hardware
S=Software
Fault Description Possible Causes