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\\word\manuals\tlv25\\mantlv25.doc Date 09-2010 Rev. 1.31 UK
pag. 14 / 26
Overshoot
Time
T
Undershoot
Time
T
Setting the cutback values
The above procedure sets up the parameters for optimum stady state control, If unacceptable levels of
overshoot or undershoot occur during start-up for large step changes in temperature, then manually set the
cutback parameters Lcb and Hcb.
Set the low and high cutback values to three times the proportional bandwith (That is to say, Lcb = Hcb = 3 *
Pb)
See the examples in drawing 2 and 3 for over- and undershoot.
Drawing 2
Drawing 3
Set point
Set point