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SV800/SV800A User Manual 5 Introduction of operation and running
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ordinary PI control.
The intelligent observer in the speed control has strong robust performance. Generally, it does
not need to be cancelled and it is only required to keep the factory default value.
5.6.5 The setting of speed variable structure control parameters
By adjusting the values of d0-11 (variable structure control parameter automatic adjustment
trigger threshold) and d0-12 (variable structure control parameter automatic adjustment
minimum threshold) to meet the requirements of speed control for fast speed response and
stability. d0-11 describes the deviation of speed control in percentages. When the deviation is
greater than the trigger threshold, the speed response performance is improved. When the
deviation decreases below the trigger threshold, the parameters are automatically modified to
meet the smooth performance of the speed control. At the same time, it is limited by d0-12. The
minimum value of the speed control parameter.
The variable structure control in the speed control has strong robust performance. Generally, no
adjustment is needed, the factory value can be maintained.
5.5.6 Switching of speed control proportional coefficient
Parameter d0-13 (speed control proportional gain 2) is a spare speed control proportional gain,
which can be selected through parameter d0-14 (speed control proportional gain selection),
multi-function terminal or communication to switch the speed control proportional gain.
Through parameter d0-14 (Speed control proportional gain selection), you can switch the
proportional gain of the selected motor in the speed control and the spare gain d0-13 (speed
control proportional gain 2). When it is selected as 2: special mode, it means the speed in the
low speed range, the proportional gain of the loop regulator is the correction value of the
currently set proportional gain. At this time, d0-13 (speed control proportional gain 2) is invalid.
It is mainly used in situations where smooth start is required during startup and extremely high
dynamic response characteristics are required during operation.
Summary of Contents for SV800 Series
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