37
3. Both thresholds are enabled, the
Act above
(high) threshold is higher than the
Act
below
(low) threshold
.
The relay is energised when the associate measurement is outside the thresholds
A
and
B
, and
de-energised when the measurement is within the thresholds
A – H
and
B + H
.
4. Both thresholds are enabled, the
Act above
(high) threshold is lesser than the
Act
below
(low) threshold
.
The relay is energised when the associate measurement is within the thresholds
A+H
and
B-H
,
and de-energised when exceeding the thresholds
A
and
B
.
The configured relay can be used to control a quantity and generate an alarm, if the
measurement falls outside the set range, the sensor becomes faulty or in case of mains failure.
A
A-H
B
B+H
B-H
A
A+H
B
Summary of Contents for HD2817T Series
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