EXPERT Standard Series User Manual
160
Figure 6-39 Given Quantity and Expected Feedback Quantity
The determination of given quantity takes 10V as the basis; the determination of
feedback quantity takes 20mA as the basis. I.e.: The meaning of adjusting the given
quantity and the feedback quantity in Figure 6-39 is to adopt an internal unified quantity for
given quantity and feedback quantity.
The closed-loop characteristics are selected through F8.16, to meet different
applications.
In an actual control system, in order to meet the control requirements, when the given
quantity increases, the speed of the motor is required to accelerate, so this closed-loop
characteristic is positive; on the contrary, when the given quantity increases, the speed of
the motor is required to decrease, so this closed-loop characteristic is negative.
As shown in Figure 6-40, F8.16 is defined to meet the requirements of two closed-loop
characteristics.
Figure 6-40 Schematic Diagram of Closed-loop Regulation Characteristics
After system confirmation, the basic steps for setting closed-loop parameters are as
follows:
① Determine the closed-loop given and feedback channel (F8.01, F8.02);
② For analog closed-loop, it is required to set the relationship between closed-loop
given and feedback (F8.08~F8.11);