FR-F700 INSTRUCTION MANUAL (BASIC) - MRO Stop

4ADJUSTMENTParameter listFunctionPID controlParameter127PID controlautomaticswitchoverfrequency0.01Hz 9999128 PID action selection 1 10129RelatedparametersNamePID proportionalbandIncrementsInitialValue130 PID integral time 0.1s 1s131 PID upper limit 0.1% 9999132 PID lower limit 0.1% 9999133 PID action set point 0.01% 9999Range0 to 400Hz9999DescriptionSet the frequency at which the control isautomatically changed to PID control.Without PID automatic switchoverfunction1011PID reverse actionPID forward actionDeviation valuesignal (terminal 1)20 PID reverse action Measured valueinput (terminal 4)21 PID forward action Set value (terminal2 or Pr. 133)50 PID reverse action Deviation valuesignal input51 PID forward action (LONWORKS, CC-Link communication)60 PID reverse action Measured value,set value input61 PID forward action (LONWORKS, CC-Link communication)If the proportional band is narrow(parameter setting is small), the0.1% 100% 0.1 to 1000%manipulated variable varies greatly with aslight change of the measured value.Hence, as the proportional band narrows,the response sensitivity (gain) improvesbut the stability deteriorates, e.g. huntingoccurs.Gain K = 1/proportional band9999 No proportional controlFor deviation step input, time (Ti) requiredfor only the integral (I) action to providethe same manipulated variable as that for0.1 to 3600sthe proportional (P) action. As the integraltime decreases, the set point is reachedearlier but hunting occurs more easily.9999 No integral control.Set the upper limit value.If the feedback value exceeds the setting, the0 to 100% FUP signal is output. The maximum input(20mA/5V/10V) of the measured value(terminal 4) is equivalent to 100%.9999 No functionSet the lower limit value.If the measured value falls below the settingrange, the FDN signal is output.0 to 100%The maximum input (20mA/5V/10V) of themeasured value (terminal 4) is equivalent to100%.9999 No function0 to 100% Used to set the set point for PID control.9999 Terminal 2 input voltage is the set point.ParametercopyParameterclearAllparameterclear◦: enabled× : disabled◦ ◦ ◦◦ ◦ ◦◦ ◦ ◦◦ ◦ ◦◦ ◦ ◦◦ ◦ ◦◦ ◦ ◦Parameter list79