– The controller parameters are only written back to the controller withUNDO_PAR or LOAD_PID when the controller gain is not 0:For LOAD_PID, the parameters are only copied if the respectiveGAIN <> 0 (either from the PI or PID parameter set). This takes intoaccount the case that no optimization has yet been performed or PIDparameters are missing. If PID_ON = TRUE and PID.GAIN = FALSE,PID_ON is set to FALSE and the PI parameters are copied.– D_F, PFAC_SP are set to default values by the tuning. These canthen be modified by the user. LOAD_PID does not change theseparameters.– With LOAD_PID, the control zone is always recalculated(CON_ZONE = 250/GAIN) even when CONZ_ON = FALSE is set.15.5.5 FB 59 - TCONT_S - Temperature Step ControlFB 59 TCONT_S is used to control technical temperature processes with binary controlleroutput signals for integrating actuators. By setting parameters, subfunctions of the PI stepcontroller can be activated or deactivated and the controller adapted to the process.ParametersParameter Declaration Data type DescriptionCYCLE INPUT REAL SAMPLE TIME OF STEP CONTROLLER [s]n At this input CYCLE, you enter the sampling timefor the controller.n Default: 0.0n Range of Values: ³ 0.001SP_INT INPUT REAL INTERNAL SETPOINTn The SP_INT input is used to specify a setpoint.n Default: 0.0n Range of Values: Dependent on the sensors usedPV_IN INPUT REAL PROCESS VARIABLE INn An initialization value can be set at the PV_PERinput or an external process variable in floating-point format can be connected.n Default: 0.0n Range of Values: Dependent on the sensors usedPV_PER INPUT WORD PROCESS VARIABLE PERIPHERYn The process variable in the peripheral I/O format isconnected to the controller at the PV_PER input.n Default: 0DISV INPUT REAL DISTURBANCE VARIABLEn For feed forward control, the disturbance variable isconnected to the DISV input.n Default: 0.0DescriptionVIPA SPEED7 StandardPID Control > FB 59 - TCONT_S - Temperature Step ControlHB00 | OPL_SP7 | Operation list | en | 18-30 871
