Danfoss ECL Comfort 210 Operating Manual page 98
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Also See for ECL Comfort 210:
- Installation manual (209 pages) ,
- Operating manual (199 pages) ,
- Instructions manual (53 pages)
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Operating Guide ECL Comfort 210/296/310, application A232 / A332
If you want to tune the PI regulation precisely, you can use the following method:
•
Set the 'Tn' (integration time constant) to its max. value (999 sec.).
•
Decrease the value for the 'Xp' (proportional band) until the system starts hunting (i.e. gets unstable) with a constant amplitude (it
might be necessary to force the system by setting an extreme low value).
•
Find the critical time period on the temperature recorder or use a stop watch.
This critical time period will be characteristic for the system, and you can evaluate the settings from this critical period.
'Tn' = 0.85 x critical time period
'Xp' = 2.2 x proportional band value in the critical time period
If the regulation seems to be too slow, you can decrease the proportional band value by 10%. Make sure there is a consumption
when you set the parameters.
98 | © Danfoss | 2017.08
Temp.
Critical time period
Time
VI.JM.G2.02
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