146 Description Of Specific Functions
V260 Series High Performance Closed-Loop Vector Inverter User Manual
7.17 ANALOG INPUT (GROUP F4.0)
F4.0.00~F4.0.05 Minimum and maximum values of analog input AI1~AI3
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This group of parameters is used to define the setting range of analog input signal, which need to be set
according to actual situation of access signal.
AI1 analog input port is unipolar voltage signal; AI2 analog input port is unipolar current signal; AI3 analog
input signal is bipolar voltage signal.
F4.0.06~F4.0.08 Filtering time
constant AI1~AI3
Setting range: 1~1000ms
Factory default: 10
Carry out filtering treatment to external analog input quantity to effectively eliminate interference signal.
Filtering time constant (time needed for given signal rising to
63
% of stable value) should be set properly
according to fluctuation range of external input signal, if set it too high, anti-interference capacity will be
strong while delaying the speed of response to setting signal.
Figure 7-36-A Sketch of AI1 analog input
and corresponding variables (unipolarity)
Figure 7-37-B Sketch of AI3 analog input
and corresponding variables (bipolarity)
Figure 7-36-B Sketch of AI1 analog input
and corresponding variables (biolarity)
Figure 7-37-A Sketch of AI3 analog input
and corresponding variables (unipolarity)
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When the unipolar input signal AI1 and AI2 are applied as bipolar signal, if input signal
breaks and input value is maximum reserve setting, it may be dangerous to human and
property safety. Please use in combination with broken-line fault detection function of
analog input port.
