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.