What is a typical feature of a two-position controller?

A two-position controller is characterized by its binary output, meaning it has only two states: fully on or fully off. This feature allows for simple and effective control in systems where maintaining a set point is necessary, and there is no need for fine adjustments. The two-position controller acts like a switch that toggles between its two states based on the conditions it monitors.

This design is particularly useful in applications such as HVAC systems, where the controller can turn heating or cooling elements on or off based on the temperature set point compared to the actual temperature. The simplicity of a binary output allows for reliable and quick responses to demand changes without the complexities of variable control.

In contrast, continuous adjustment and analog signaling refer to controllers that provide a range of outputs, allowing for gradual and precise control over a process. Variable control involves modulating the output continuously, typically applying to more sophisticated control systems like proportional-integral-derivative (PID) controllers. Thus, the defining aspect of a two-position controller is indeed its binary output.