Setting 0: Operator (d1-01)Setting 1: Operator (d1-02)Setting 2: Operator (d1-03)Setting 3: Operator (d1-04)Setting 4: TerminalsSetting 5: Serial CommunicationSetting 6: Option Cardu S3: Secondary PI (PI2) ControlThe drive has a built in PI (Proportional + Integral) controller that can be used for closed loop control of system variables suchas pressure or temperature. The difference between the target and the feedback value (deviation) is fed into the PI controllerand the PI controller outputs the frequency to U5-oo for monitoring. Refer to b5: PID Control on page 31 for details.S3-06PI2 P Gain-1PI2 I Time1S3-07 ++S3-08PI2 I Limit<1>z-1PI2 InvertMulti-functionInput Closed+ +Upper Limit:S3-09PI2 Output UpperLimitLower Limit:S3-10PI2 Output Lower LimitU5-19PI2 Input-1S3-10 = 0S3-10 = 1PI2IntegralHold Multi-functionInputPI2 IntegralReset Multi-Function InputMEMOBUS DHPI2 SetpointMEMOBUS000FHbit 4 = 1H3-10=25Terminal A2S3-05PI Setpoint+H3-10=26Terminal A2-U5-17PI2 SetpointU5-18PI2 FeedbackU5-20PI2 OutputLower Limit:S3-10PI2 Output Lower LimitPI2 DisableMulti-functionInput <2>S3-12012<1> Actual integral limit is calculated as follows:Upper limit = Min (S3-08, S3-09 - PI2 P portion)Lower limit = Min (-S3-08, S3-10 - PI2 P portion)<2> When PI2 Disable multi-function input is closed, set PI Integrator as follows:S3-12 = 1: PI I Value = S3-10S3-12 = 2: PI I Value = S3-05Figure 1.79 PI2 Block Diagramn S3-01: Secondary PI Enable SelectionDetermines when the secondary PI controller is enabled.No. Name Setting Range DefaultS3-01 Secondary PI Enable Selection 0 to 3 0Setting 0: Secondary PI DisabledSetting 1: AlwaysSetting 2: Drive RunningSetting 3: Motor RunningAvailable when the drive is not at zero speed, not in base block, and not in DC injection.n S3-02: Secondary PI User DisplaySets the scale value of 100% PI input. The decimal place shifts based on S3-03.No. Name Setting Range DefaultS3-02 Secondary PI User Display 0 to 60000 1000 <1><1> Unit is determined by S3-03.1.11 S: Special Parameters146 YASKAWA ELECTRIC SIEP C710636 10C Z1000U HVAC MATRIX Drive Programming Manual
