Function Application
‑513‑
regulator. (The integral time refers to the amount of time that the integral
regulator spends on continuous adjustment at an amplitude of the maximum
frequency when the deviation between the PID feedback value and preset value is
100.0%.)
● Derivative time Td: Td determines the intensity of deviation change rate
adjustment by the PID regulator. A longer derivative time means stronger
deviation change rate adjustment by the PID regulator. (The derivative time refers
to the period during which the feedback value changes by 100.0%, and the
differential regulator adjusts the output frequency reference at an amplitude of
the maximum frequency.)
Example
Step 1: Set both F0‑03 and F0‑04 to 8 to use PID as the main and auxiliary frequency
input sources.
Step 2: Set FA‑00 to select the source of PID target reference. When FA‑00 is set to 0,
you need to set FA‑01 (PID digital setting). The value 100% of this parameter
corresponds to the maximum PID feedback.
Figure 3‑19 Block diagram of process PID control
Step 3: Set FA‑02 to select the PID feedback source.
Step 4: Set FA‑03 to select the PID action direction.
The following figure shows the logic of the PID control parameter setting.
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