NE200/300 Series Drive User Manual
164 Chapter 6 Parameter description
this function can reach a balance between system output accuracy and
stability.
F8.16
PID output positive limit Range: 0.00～320.0Hz【50.00Hz】
F8.16
PID output positive limit Range: 0.00～600.0Hz【50.00Hz】
F8.17 PID output negative limit Range: 0.00～600.0Hz【0.00Hz】
The two parameters are used to limit the output range of the PID
regulator. When PID regulating is set to be the frequency reference, user
can adjust the negative limit of the PID for reverse control, e.g. setting
F8.17=30.00Hz to limit the reversed rotation within 30Hz. When PID and
other channels are combined as frequency reference, the PID positive and
negative limit can be adjusted according to actual application needs. For
example, when PID and AI1 is overlapped to be frequency reference, and if
system requires PID to conduct fine adjust of ±5V based on AI1, both F8.16
and F8.17 are to be set as 5.00Hz.
F8.18 PID preset freq. Range: 0.00～550.0Hz【0.00Hz】
F8.19 Hold time of PID preset
frequency
Range: 0.0～3600s【0.0s】
When the PID operation is start, the frequency will ramp up to the PID
preset frequency (F8.18) according to the Acc time. The drive will keeps
running at this preset frequency for a period of time set by F8.19, and then
starts to conduct PID characteristic regulating as shown in Fig.6-24.
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