2-30 Malfunctions with Indications
CP-98 SCR Field Cur
Low (Soft)
During the SCR test routine, the field current is
enabled before the maximum discontinuous current
measurement. This fault occurs if the field current
feedback is not within 6.25% of the field current
reference after 180V AC line cycles.
Refer to VP-13 Motor Field Loss fault.
CP-100 SCR Test Fault
(Soft)
An internal hardware error detected during the SCR
test. The power-on test was aborted.
Execute a CLEAR FAULT and attempt normal operation. If
this is a very low current drive, manually tune the drive.
Incorrect Burden Resistors can also cause this malfunction.
Verify CT turns. On some applications of high inductance
motors, manual tuning may be necessary. If the fault
reoccurs, replace Main Control Board.
CP-101 SCR #1F or #4R
Shorted (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that either the #1
SCR of the forward armature bridge or the #4 SCR
of the reverse bridge is shorted.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures.
CP-102 SCR #2F or #5R
Shorted (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that either the #2
SCR of the forward armature bridge or the #5 SCR
of the reverse bridge is shorted.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures.
CP-103 SCR #3F or #6R
Shorted (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that either the #3
SCR of the forward armature bridge or the #6 SCR
of the reverse bridge is shorted.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures.
CP-104 SCR #4F or #1R
Shorted (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that either the #4
SCR of the forward armature bridge or the #1 SCR
of the reverse bridge is shorted.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures.
CP-105 SCR #5F or #2R
Shorted (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that either the #5
SCR of the forward armature bridge or the #2 SCR
of the reverse bridge is shorted.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures.
CP-106 SCR #6F or #3R
Shorted (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that either the #6
SCR of the forward armature bridge or the #3 SCR
of the reverse bridge is shorted.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures.
CP-107 SCR #1F Did
Not Conduct
(Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that #1F SCR of
the forward armature bridge did not conduct current
and is indicated as an open circuit. A mismatch
between drive and motor current horsepower
ratings can also cause this malfunction.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge failures. Check for
possible drive/motor mismatch. Check the nameplate of
both the motor and drive.
CP-108 SCR #2F Did
Not Conduct
(Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that #2F SCR of
the forward armature bridge did not conduct current
and is indicated as an open circuit. A mismatch
between drive and motor current horsepower
ratings can also cause this malfunction.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge malfunctions. Check
for possible drive/motor mismatch. Check the nameplate of
both the motor and drive.
CP-109 SCR #3F Did Not
Conduct (Soft)
This fault is a result of a malfunction detected
during the SCR test. It indicates that #3F SCR of
the forward armature bridge did not conduct current
and is indicated as an open circuit. A mismatch
between drive and motor current horsepower
ratings can also cause this malfunction.
Refer to the Magnetics/Power Structure section for further
details on correcting armature bridge malfunctions. Check
for possible drive/motor mismatch. Check the nameplate of
both the motor and drive.
Current Processor Faults
No. Name Description Recovery
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