Bumpless Transfer

When a controller is switched from manual mode to auto-mode, it is desired that the input of the process should not change suddenly.

But since there is always a possibility that the decision of the manual mode of control and the auto mode of control be different, there may be a sudden change in the output of the controller, giving rise to a sudden jerk in the process operation. Special precautions are taken for bumpless transfer from manual to auto-mode.