38
Maintenance Functions of DST1-series Safety I/O Terminals Section 1-7
Measuring 0.5-second ON Time
In Figure A, the actual ON time is 0.5 seconds x 3, or 1.5 seconds. Operation
is ON only once when measurements are made, however, so the time is mea-
sured as 1 second.
In Figure B, the actual ON time is 0.5 seconds x 3, or 1.5 seconds. Operation
is ON twice when measurements are made, however, so the time is measured
as 2 seconds.
Measuring 1.5-second ON Time
In Figure C, the actual ON time is 1.5 seconds x 2, or 3 seconds. Operation is
ON four times when measurements are made, however, so the time is mea-
sured as 4 seconds.
Reading taken approximately every second.
Figure A
0.5 s
Reading taken approximately every second.
Figure B
0.5 s
Reading taken approximately every second.
Figure C
1.5 s
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