Specifications

 Chapter6FunctionalParameterDetailVFD‐G7SeriesFrequencyInverterOperationManual
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1：Frequencysetting
6.8 F7 Group Process PID Parameter
PID control is common method of process control, by proportion, integral, differential
operationtotheresidualquantityoffeedback signalandobjective signal ofthe controlled
volume,thecloseloopsystemisformedbyadjustingtheoutputfrequencyofthefrequency
inverter to stabilize the controlled volume in objective value. It
 is suitable to the process
control situation like flow control, pressure control, temperature control and so on, the
processPIDcontrolfunctionalblockdiagramisshownasthefigure6‐16.
Figure 6-16 Process PID control functional block diagram
F7.00
PID control function
selection
Default: 0000H
Setting scope ： 0000H ～
0146H
Single digit：PID Reference channel selection
0：Keyboarddigitalfrequencysetting
1：AnalogV1setting
2：AnalogV2setting
3：Keyboardpotentiometersetting
4：Multistagespeedrunsetting
5：Telecommunicationsetting
6：HDIhighspeedpulsesetting
Thisparameterisused toselectprocessPID goalvaluereferencechannel.Thesettinggoal
valueofprocessPIDis
therelativevalue,thesettingrangeis0.0%~100.0%.Thefeedbackof
PID is also therelative value, the function of PID is to make thefeedbackthe same asthe
PID preset FF.09
PID control
setting
frequency
control
algorithm
+
M
P
Filter
Sensor
_
PID feedback FF.10