Pull up for Setpoint keys.
It is used by the controller to compare the Setpoint and actual position.
This implies a 20° proportional band(PB) from full to no power input,
evenly spread around the Setpoint value.
As soon as water temperatrue for shower drops to the Setpoint, the Heat Pump starts working so as to ensure constant shower.
Models of higher price category can boast increased power and additional functions(programming cooking process, the presence of the grill,
the temperature Setpoint, etc.).
Models of higher price category can boast increased power and additional functions(programming cooking process, the presence
of the grill, the temperature Setpoint, etc.).
In the furnace example,
suppose the temperature is increasing towards a Setpoint at which, say, 50% of the available power will
be required for steady-state.
Whether you try to go under your Setpoint(lose weight)
or over it(gain weight), your body resists changes by regulating your hunger levels and metabolic rate.
Whether or not you attempt to go under your Setpoint(shed pounds)
or over it(achieve weight), your body resists changes by regulating your starvation levels and metabolic charge.
At the Setpoint the controller will be applying 50% power as required,
but stray stored heat within the heater sub-system and in the walls of the furnace will keep the measured temperature rising beyond what is required.
On control systems like the tuning of the temperature of a furnace, or perhaps the motion-control of a heavy item like a gun or camera on a moving vehicle, the derivative action of a well-tuned PID controller can allow it to reach and
maintain a Setpoint better than most skilled human operators could.