Datcon DT9500, Operating Instructions Manual

Page: 78 / 100

DT9500
78
20220103-V2
Detailed description of
the operating mode
(

)
The operating modes define the conditions under which the
limit output should switch ON depending on the value of
the measured and displayed physical signal.

Switched OFF
The output is always switched OFF. [default factory setting]

≥ low limit
It switches ON if the measured value is ≥ low limit.

< low limit
It switches ON if the measured value is < low limit.

Interval between the low and the high limits
It switches ON when (measured value ≥ low limit) AND
(measured value ≤ high limit).

A range outside the low and high limits
It switches ON when (measured value < low limit) OR
(measured value > high limit).

Always switched ON
Independently from the measured value, the output is
always ON.
The essentials about the
hysteresis To each limit values can be assigned different hysteresis
values.
To

belongs:


,
To

belongs: 

.
The essentials about the hysteresis:
It makes it possible that the output should switch off not at
the same numerical value at which it had switched on.
What is the benefit of that? You may avoid the undesired
consequence, when the output switches on and off several
times near the limit values, due to a drift of the input signal,
or due to it’s ripple. This is demonstrated by an example in
the following pictures: