Chapter 12 Descriptions of Parameter SettingsMS300
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The benchmark for the smart start-up level is the percentage of PID deviation.
Use the smart start-up function to reduce overshoot when overshoot occurs in the PID feedback
at start-up. The smart start-up activates only once at start-up.
When the smart start-up function is enabled, it starts with the Pr.08-71 frequency and Pr.08-72
acceleration time (Pr.08-72 acceleration time is the time that it accelerates to Pr.08-71). When
the PID deviation is smaller than Pr.08-70, it switches to the normal PID control (the smart start-
up frequency is filled into the PID integral when switching to PID control to avoid discontinuous
frequency).
PID2 Parameter Switch Condition
0: No switching (refer to Pr.08-01–Pr.08-03)
1: Auto-switch based on the output frequency
2: Auto-switch based on the deviation
PID2 Parameter Switch Deviation 1
PID2 Parameter Switch Deviation 2
A set of PID parameters cannot meet the requirements of the entire running process in some
applications. Use Pr.08-75 to switch to the second set of PID parameters Pr.08-31–08-33. The
setting method for Pr.08-31–08-33 is the same as that for Pr.08-01–08-03.
The two sets of PID parameters switch automatically according to the frequency and deviation.
Switch according to the output frequency:
When the output frequency is between Pr.01-07 and Pr.01-00, the PID parameter is the linear
interpolation value between the two PID parameter groups.
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