gefran TPD32-EV-...-4B - Feed - Forward

—————— Instruction manual ——————
285
6.16.3.3 Feed - Forward
PID source
[786] PIDsource
[787] PIDsourcegain
[758] Feed-fwdPID
Parameter description No.
Value
Standard
Conguration
min max
Factory
American
Factory
Standard
PIDsource
786 0 65535 0 0
PIDsourcegain
787 -100.000 +100.00 1.000 1.000
Feed-fwdPID
758 -10000 +10000 0 0
*
*Thisparametercanbesetonananalogprogrammableinput..
Whenused,thefeed-forwardsignalrepresentsthemainreferenceoftheregulator.Insidetheregulatoritwillbe
attenuatedorampliedbythePIDfunctionandsenttotheoutputasreferencesignalforthedrive.
I/O Parameter
Parameter
Internal variable
LEGEND:
PID source
Gain
PID source gain
Feed-fwd PID
Figure 6.16.3.1: Feed-forward block description
PID source Addressoftheparameter(Feed-forwardvalue)containingthevaluewhichwillbeused
asPIDsource.
 Number+2000H(8192decimal)mustbeaddedtotheparameter.
PID source gain MultiplieroftheinputvaluetoPIDsource.
Feed-fwd PID Valueoffeed-forward
ThroughtheparameterPID source, itispossibletoselectwhichpointinthedrivethefeed-forwardsignalmay
besent.Theselectableparametersarethoseindicatedintheparagraph10.2.“Listofthehigh-priorityparam-
eters”.Themeasureunitsarethoseindicatedinthenotesattheendofthisparagraph.
1. Programming example of the ramp output block (Parameter Ramp out) on PID source:
 MenuOPTION
  ————>PID
   ————>PIDsource
    ————>PIDsource=8305
ThePID source mustbesettotheparameternumbertowhichitwillbeassociated,choosingitfromparagraph
10.2.“Listofhigh-priorityparameters”(Ramp out hasthedecimalnumber113).
Toobtainthevalue,itmustbeaddedtothedecimalvalue8192(xedoffset):
8192+113=8305.
Ifyouneedtosetthefeed-forwardonanaloginput,giventhattheyarenotdirectlyinsertedinthe‘high-priority
parameters’,itisnecessarytopassthroughaPAD 0.....PAD 15 parameter.