Lumel RE72 User Manual

Also see for re72 series: Quick start manual User manual User Manual & Quick Start User Manual & Quick Start Quick start

Lumel RE72 User Manual Manual pdf 40 page image

40408.4. „Gain Scheduling” functionFor control systems, Where the object behaves decidedly differen-tly in various temperatures, it is recommended to use the “Gain Schedu-ling” function. The controller allows to remember up to four sets of PIDparameters and switch them over automatically. The switching betweenPID sets runs percussiveless and with hysteresis, in order to eliminateoscillations on switching limits.The Gty parameter settles the way of the function operation.off The function is disabledspa) switching depending on the set point value.For the fi xed set point control one must also choose the num-ber of PID sets – the Gsnb parameter, and set switching levelsin dependence from the number of PID sets Gl12, Gl23,Gl34.b) For the programmed control, one can set the PID set indivi-dually for each segment. Then, one must set the pid parame-ter on on for the given prnn program, in the PCfg group.set Permanently setting of one PID set, the PID set is put throughthe Gset parameter.S PG l 1 2G l 2 3G l 3 4P I DP I D 1P I D 2P I D 3P I D 4Fig. 19.”Gain Scheduling” switched over from SP