Programming with TAPPS2 / Functions
21
Hystereses
Many parameters have adjustable start and stop differentials which have the effect of a switching
hysteresis.
Example:
Demand temperature in the Heating demand function
Demand is triggered at T.dem. set + Diff. on (=
61 °C
); shutdown is triggered at T.dem. set + Diff. off
(=
69 °C
).
The values of Diff. on and Diff. off can also be negative, but are always added to the set temperature.
Example of a negative Diff value:
Here, demand is triggered at T.dem. set + Diff. on (=
51 °C
); shutdown is triggered at T.dem. set + Diff.
off (=
60 °C
).
Schematic diagram of start and stop differentials for MAX and MIN thresholds
