Keba ServoOne User Manual

FFT without filtering FFT with filtering
Table 7.16: FFT transformation
NOTE
l Notethatthefiltersnotonlyhaveaneffectontheamountbutalso
onthephaseofthefrequencyresponse.Atlowerfrequencies
higher-orderfilters(PT3,PT4)shouldnotbeused,asthephase
withinthecontrolbandwidthisnegativelyinfluenced.
l ThecoefficientscanalsobespecifieddirectlyviaparameterP 327
- CON_SCON_FilterPara.Theytakeeffectdirectly,sochanging
themisonlyrecommendedwhenthecontrolisswitchedoff.
l Alargebandwidthwillresultinalowerattenuationofthecut-off
frequency.
ID No.: 0842.26B.5-01Date: 09.2020
ServoOne- Device Help
139
7 Control
ID Index Name Unit Description
325  CON_SCON_FilterFreq  Filterfrequenciesofdigitalfilter
325 0 CON_SCON_FilterFreq Hz 1stcenter/cutoff
325 1 CON_SCON_FilterFreq Hz 1stwidth
325 2 CON_SCON_FilterFreq Hz 2ndcenter/cutoff
325 3 CON_SCON_FilterFreq Hz 2ndwidth
326 0 CON_SCON_FilterAssi  Digitalfilterdesignassistant
327  CON_SCON_FilterPara  Coefficientsofdigitalfilter
327 0 FilterParab0  b0*x(k)
327 1 FilterParab1  b1*x(k-1)
327 2 FilterParab2  b2*x(k-2)
327 3 FilterParab3  b3*x(k-3)
327 4 FilterParab4  b4*x(k-4)
327 5 FilterParaa1  a1*y(k-1)
327 6 FilterParaa2  a2*y(k-2)
327 7 FilterParaa3  a3*y(k-3)
327 8 FilterParaa4  a4*y(k-4)
1550 0 SCD_NotchType  AdaptiveNotchfilter:Method
1551 0 SCD_NotchCntl  AdaptiveNotchfilter:Controlword
1552  SCD_NotchFreq  AdaptiveNotchfilter:Frequencies
1552 0 SCD_NotchFreq Hz AdaptiveNotchfilter:Frequency
1552 1 SCD_NotchLambda Hz/min^-
2
AdaptiveNotchfilter:Coefficient
1552 2 SCD_NotchMinFreq Hz Adaptivenotchfilter:Minimumfrequency
1552 3 SCD_NotchMaxFreq Hz Adaptivenotchfilter:Maximumfrequency
1552 4 SCD_NotchDeltaFreq Hz AdaptiveNotchfilter:Maximumfrequency
change(ineachiteration)
Table 7.17: “Speed controller - Digital filter” parameter
7.4.3AnalysisofSpeedcontrol
The speed controller is executed as a PI controller. The gain (P-component) and the
integral-action time (I-component) of the individual controllers are programmable.
In order to optimize the speed control loop, two rectangular reference steps are
preset. For automatic controller optimization the step response and transfer function
wizards are available.

Keba ServoOne Specifications

General

Brand	Keba
Model	ServoOne
Category	Controller
Language	English