EXPERT Standard Series User Manual
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accelerates to the frequency corresponding to analog AI2 input according to the
acceleration time.
Stop process:
During running, when AI2 decreases to Ib, the drive will not stop immediately, and the drive
will stop outputting only when AI2 continues decreasing to Ia and the corresponding set
frequency is fa.
Here, fa is defined as zero frequency operation threshold, which is defined by FC.12,
and fb-fa is defined as zero frequency return difference, which is defined by function code
FC.13.
Using this function, you can implement the sleep function, realize energy-saving
operation, and can avoid frequent starts of the drive at the threshold frequency through the
width of the return difference.
fa:
a: Zero frequency operation threshold
f
b:
f
a + zero frequency return difference
fc:
c: Frequency corresponding to AI2 input Ic
Figure 6-62 Operation at Zero Frequency Return Difference
