The User Manual of 580 Series General Frequency Converter

4.8.6 The usage of frequency source given by the pulse

580 is set with a built-in PID regulator to coordinate with frequency channel selection. The user can realize automatic regulation of process control and the control application including constant temperature, constant pressure, tension, etc.

Fig. 4-22 The closed-loop control of frequency of process control

When the closed-loop control of PID frequency is used, it is required to select frequency source F0-03=8: namely, PID output frequency. The relevant parameter of PID is included in the function parameters of Group FA and the relevant PID function code relation is as shown in the figure above. 580 frequency converter is set with 2 built-in equivalent PID computing elements of which the characteristic parameters can be set respectively, they are suitable for different PID regulating characteristics according to working conditions and respectively emphasize PID regulating speed and accuracy, their switching may be automatic or controlled by external DI terminal signal.