A proportional controller will have an offset difference between set point and control pointans.That will eventually vanishAt all timesEqual to the proportional band settingThat depends on process load Previous Marked for Review Next

It seems like you're asking about the characteristics of a proportional controller in a control system. However, your question is not clear. Could you please rephrase or provide more details?

In general, a proportional controller in a control system will minimize the error between the set point (desired value) and the control point (measured value). However, it may not always eliminate the error completely, leading to a steady-state error or offset. This offset does not vanish over time. The size of this offset can depend on the proportional gain and the process load.

If the proportional gain is high, the system can react quickly to changes in the set point or load, but it may also cause the system to overshoot and become unstable. On the other hand, if the proportional gain is low, the system may be stable but slow to respond to changes.

The process load can also affect the offset. If the load changes frequently or unpredictably, it can be difficult for the controller to maintain the set point, leading to a larger offset.

Please let me know if you need information on a specific aspect of proportional control.