GE GFK-0787B Noise Reduction Machine User Manual


 
5
5-9GFK-0787B Chapter 5 Diagnostics
4. The autotest master pulse tests Block A. Any faults on block A are noted.
Load
AB
C
D
Block C outputs still
overridden ON
Failed Switch outputs still
overridden OFF.
Block A Pulse-tested.
5. The master resets all four blocks in the output group.
6. Overrides on block C are cancelled.
Load
AB
C
D
Block C output overrides
cancelled.
Failed Switch outputs still
overridden OFF.
7. The master cancels overrides on block B except for any outputs that have tripped
erroneously.
Load
AB
C
D
Overrides conditionally
cancelled.
8. The autotest master repeats the above process for blocks D/A/B, then A/D/C, then
B/C/D.
9. The autotest master reports faults to the other PLCs (if any). All the PLCs log any
faults that occur into their Fault Tables.
10. The autotest master continues testing with the next group.