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7−2−3. Operation on comparator S1 and S2
The comparator in the instrument, S1 and S2 can select the operation whichever “contact ON
at more than the set value”, or “contact ON at less than the set value”. This selection can be
made in the Function mode. (Related function F−32)
As for default, the “contact ON at more than the set value” is selected for both of S1 and S2.
Warning ● Depending on the operational selection for comparator, ON/OFF
condition for each contact output may differ. If wrong operation is
selected, ON/OFF condition for contact output becomes inadequate
and it may cause an unexpected accident due to malfunctions on
peripheral instruments, so care should be taken fully.
● When the load display is “OL” or “−OL”, the “display value” for the
comparison of comparator is assumed as “＋∞(infinity) ” and “−∞
(infinity)” individually.
Operation on judgement display section and contact output will be shown as an example of S1
below. The operation becomes similar as for S2.
(1) When the operation of “contact ON at more than the set value” is selected.
S1 judgement display, S1 contact output ON at (S1 set value)≦(Display value)
S1 set value
Display (large)
Display (small)
S1 judgement display,
S1 contact output
ON
OFF
(2) When the operation of “contact ON at less than the set value” is selected.
S1 judgement display, S1 contact output ON at (S1 set value)≧(Display value)
S1 set value
Display (large)
Display (small)
S1 judgement display,
S1 contact output
ON
OFF
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