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Chapter 2 Faults and Troubleshooting Innovation Series Medium Voltage GP Type - G Drives GEH-6385
No. Name Type Description
109
Task 1 exec
overrun
Alarm
The Task 1 exec overrun alarm occurs when Task 1 exceeds its allotted CPU
execution time. This alarm may occur during system development but should
not occur in the field.
Primary causes:
Task 1 contains too much functionality to complete in the specified execution
time.
Possible board failures:
DSPX
110
Task 2 exec
overrun
Alarm
The Task 2 exec overrun alarm occurs when Task 2 exceeds its allotted CPU
execution time. This alarm may occur during system development but should
not occur in the field.
Primary causes:
Task 2 contains too much functionality to complete in the specified execution
time.
Task 1 contains too much functionality. Although it completes in its specified
execution time, it does not allow Task 2 to run to completion.
Possible board failures:
DSPX
111
Task 3 exec
overrun
Alarm
The Task 3 exec overrun alarm occurs when Task 3 exceeds its allotted CPU
execution time. This alarm may occur during system development but should
not occur in the field.
Primary causes:
Task 3 contains too much functionality to complete in the specified execution
time.
Task 1 and Task 2 contain too much functionality. Although they complete in
their specified execution time, they do not allow Task 3 to run to completion.
Possible board failures:
DSPX
112 ADL msg stack fail Alarm The ADL msg stack fail alarm occurs when an attempt by autotune or cell test
to allocate or free message stack memory fails. The purpose of the alarm is to
indicate failure in the use of dynamic memory with asynchronous drive
language functionality. This alarm may occur during system development but
should not occur in the field.
Primary causes:
An attempt to allocate or free memory on behalf of the ADL message stack
failed.
113 Invalid board set Trip The Invalid board set trip fault occurs when the electronic board ID
interrogation which happens during initialization does not produce the
expected set of circuit boards. Each circuit board in the rack has an electronic
ID which contains board type and revision information. Each Innovation
Series product has an expected set of circuit boards. If any of the expected
boards is missing, or if incorrect boards are present, the drive cannot operate
properly.
The circuit boards that the drive has identified can be obtained by making the
following GE Control System Toolbox menu selections: View, Reports, Drive
Version and Hardware Info.
Primary causes:
A circuit board which is required for the drive to operate properly is not
present.
A circuit board which should not be used in the drive is present.
A circuit board is not seated properly in its backplane socket.
The electronic ID part on a circuit board has experienced a failure.