Reset
The Reset component performs a linear reset on the In value.
Slots
The Reset component has the following slots:
- Status: shows the component's status;
- Out: the output value;
- In: the input value;
- In Min: the input low limit, must be less than the input high limit;
- In Max: the input high limit, must be greater than the input low limit;
- Out Min: the output low limit, may (or may not) be greater than the output high limit;
- Out Max: the output high limit, may (or may not) be greater than the output low limit.
The Reset operation is defined by the In Min/Max and Out Min/Max slots. For example, the Reset component is used to establish a hot water control setpoint, based on the outside air temperature at the In slot. If the outside air temperature is 0˚F, the hot water setpoint is 200˚F. If the outside air temperature is 75˚F, the hot water setpoint is 100˚F. The Reset component is configured as follows:
In Min (input low limit) = 0.0
In Max (input high limit) = 75.0
Out Min (output low limit) = 200.0
Out Max (output high limit) = 100.0
Whenever the In value is beyond the input limits, the output is limited by the corresponding output limit (in this case, 200 at 0˚F or below, 100 at 75˚F, or above). If the input is at an intermediate value, the output scales linearly. For example, if the outside air temperature is at 38.2˚F, the Reset output is 149.1˚F.