Program Controller SE-707
© 2018 by STANGE Elektronik GmbH
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Subject to technical modifications
The following figure shows the behaviour of the x-Tracking procedure:
Curve 1.) Thus the curve progression looks without progressive gradient behaviour: The controller set value starts with the
momentary actual value and increases then with the configured gradient up to the target set value.
Curve 2.) Thus looks the whole if progression factor min is configured. The gradient of the controller set value decreases
more and more before reaching the target value; up to progression factor min. multiply the configured gradient. The smallest
possible value for progression factor min is 0.05, i.e., the gradient is then reduced minimum up to 1/20 of the configured
value.
Curve 3.) Additionally can be configured as well parameter 45 (progression factor max). Hereby is accelerated the rise of the
beginning of the x-Tracking ramp in case of large set/actual difference. The maximum value for parameter 45 is 5.0, i.e., the
gradient is raised maximally to the fivefold value (dependent on the size of the x-Tracking difference).
The default setting for progression factor min is 1.0, i.e., no gradient change!
The effectiveness of the progression interval (parameter 43) is as follows:
The quotient is formed from:
|(target set value - controller set value)| / progression interval
This quotient is then consulted for the evaluation of the X-Tracking ramp rise. The effectiveness clarifies the following graph:
Curve 2.) Here the value of parameter 43 is reduced in relation to curve 1 that leads to a closer process of the transient
procedure.
Curve 3.) An enlargement of parameter 43 leads to a further bend of the transient procedure, it is transient "softer".
AV / SV
Target SV
AV
AV / SV
Target SV
AV
