Intelligent Technologies (
IT.
) D77B-DSNAP
Pub. No. MN05004001E
21
September 2002
Functional Description
Table 22: Truth Table
– = state not important
RUNNING 1 = Run/FWD/SLOW
1 = state true (energized)
RUNNING 2 = REV/FAST
0 = state false (de-energized)
FAULT = any fault in Table 17
WARNING = any warning in Table 17
Old State
Fieldbus Inputs
Event
New State
Action
Run 1
Run 2
Reset
FAULTED
–
–
1
RESET
OFF
FAULT = 0
OFF
0
0
–
NONE
OFF
NONE
OFF
1
0
–
RUN 1
RUNNING 1
RUNNING 1 = 1
OFF
0
1
–
RUN 2
RUNNING 2
RUNNING 2 = 1
OFF
1
1
–
RUN 1/RUN 2
OFF
NONE
RUNNING 1
1
1
–
RUN 2
RUNNING 1
NONE
RUNNING 2
1
1
–
RUN 1
RUNNING 2
NONE
RUNNING 1
1
0
–
FAULT
FAULTED
RUNNING 1 = 0
FAULT = 1
RUNNING 2
0
1
–
FAULT
FAULTED
RUNNING 2 = 0
FAULT = 1
RUNNING 1
1
0
–
WARNING
RUNNING 1
WARNING = 1
RUNNING 2
0
1
–
WARNING
RUNNING 2
WARNING = 1