TCW241_R4.17
–
October 2022
Page 19
•
“Virtual input
z”
- the relay is activated from the value from specified virtual item
(cloned analog input or 1-Wire sensor) and rules for ranges
specified in “Setup
->Alarm
conditions
”
; z is number from 1 to 4;
•
“Digital input z”
- the relay follows the state of specified digital input; z is number from
1 to 2;
•
Any alarm - the relay is activated from any of set alarm conditions.
7.2.4.
Conditions
This section is used for parameterization of the trigger and alert conditions for 1-Wire sensors,
analog, and digital inputs.
7.2.4.1.
1-Wire sensors, analog inputs, and virtual items
For every sensor two type of fields are presented
–
one to set
trigger conditions (“Min”, “Max”
and “Hys.”) and
another one for
alert notification (“
If out of range
”).
“Min” and “Max” indicate
the border of working range for the observed parameter.
A “Max” trigger condition occurs when the value exceeds the trigger set point. A “Min” trigger
condition occurs when the value is lower than the trigger set point. In both cases, the monitored
parameter goes out of range.
Coming back in range for the observed parameter is considered when the value goes higher
than (Min + Hys) or lower than (Max
–
Hys).
Hysteresis (“Hys”) is used to prevent excessively
triggering when the value vacillates around trigger point.
Summary of Contents for TCW241
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