PID inputI controlPID Output D controlTimePID outputTimeP controlFigure 5.16 PID Operationn Using PID ControlApplications for PID control are listed in the table below.Application Description Sensors UsedSpeed Control Machinery speed is fed back and adjusted to meet the target value. Synchronous controlis performed using speed data from other machinery as the target value TachometerPressure Maintains constant pressure using pressure feedback. Pressure sensorFluid Control Keeps flow at a constant level by feeding back flow data. Flow rate sensorTemperatureControl Maintains a constant temperature by controlling a fan with a thermostat. Thermocoupler,Thermistorn PID Setpoint Input MethodsWhen the PID control parameter b5-01 is set to 1 or 2, the frequency reference in b1-01 (or b1-15) becomes the PIDsetpoint. If b5-01 is set to 3 or 4, then the PID setpoint can be input from one of the sources in the following table.Table 5.6 PID Setpoint SourcesPID Setpoint Source SettingsAnalog Input A1 Set H3-02 = CAnalog Input A2 Set H3-10 = CMEMOBUS/Modbus Register 0006H Set Bit 1 in register 000FH to 1 and input the setpoint to register 0006HPulse Input RP Set H6-01 = 2Parameter b5-19 Set parameter b5-18 = 1 and input the PID setpoint to b5-19Note: A duplicate allocation of the PID setpoint input will result in an OPE alarm.n PID Feedback Input MethodsEither one feedback signal can be input for normal PID control or two feedback signals can be input for controlling adifferential process value.Normal PID FeedbackThe PID feedback can be input from one of the sources listed below.Table 5.7 PID Feedback SourcesPID Feedback Source SettingsAnalog Input A1 Set H3-02 = BAnalog Input A2 Set H3-10 = BPulse Input RP Set H6-01 = 1Note: A duplicate allocation of the PID feedback input will result in an OPE alarm.Differential FeedbackThe second PID feedback signal for differential feedback can come from the sources listed below. The differential feedbackfunction is automatically enabled when a differential feedback input is assigned.5.2 b: ApplicationYASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual 1315 Parameter Details
