<Toc> <Ind>
6-3
TI 05C01E02-01E 1st Edition : Oct. 31, 2001-00
6.2.3 Tuning the Proportional Band
•
The proportional band (P) is adjusted
as shown in the figure on the left.
To fine-tune a proportional band obtained using auto-tuning, or to
manually tune the proportional band:
•
Work from larger to smaller numbers (wider to narrower)
•
If cycling appears, that means that the proportional band is too
narrow.
•
Proportional band tuning cannot cancel an offset.
PV
Time
SP
P is too small.
P is moderate.
P is too large.
¥
If P is too small, oscillation will appear in the PV.
1°C/°F to the temperature
corresponding to 100% of
measured input range (scale)
span
P
Parameter Range
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