Model 493.02 Controller Service
About Tuning
Tuning
212
If the amplitude of the feedback cannot be achieved without going
unstable, and the end levels are repeatable, simply increase the
command to achieve the desired end levels.
Monitoring the
error signal
The error signal shows similar characteristics as a feedback signal. The
error signal represents the difference between the command and
sensor feedback. The following diagrams show the error signal
characteristics for each type of waveform.
A square waveform is best suited to view the overshoot and ringing
characteristics that occur when tuning a system. Review the following
waveforms to determine the kind of characteristics that can be found
in an error signal.