Given an input of TCon
and TEva
,
the model returns false if the given
point is outside of the given operational envelope.
The maximal and minimal TCon
depend on
TEva
and are defined by the
upper and lower boundaries in form of 1Ds-Tables.
The maximal and minimal TEva
values are obtained
trough the table and are constant.
For the boundaries of the TCon
input value, a
dynamic hysteresis is used to ensure a used device will
stay off a certain time after shutdown.
This is similar to the hysteresis in a pressure-based safety control, which prevents operation outside this envelope in real devices.