LS SV0008iS7-2, Руководство пользователя

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Chapter 6 Basic Functions
6-3
IN-05 V1 Monitor : displays the voltage input into the V1 terminal. This is used for
monitoring the currently input voltage.
IN-07 V1 Filter : used when the set frequency value fluctuates greatly due to the
environment such as noise. If you set the filter time constant high, you can reduce the
frequency fluctuation but the response gets slower. The higher the time constant is, the
time (t) becomes longer. The set time refers to the time it takes the frequency set in the
inverter to increase by up to about 63% when the voltage input is input by step as follows.
IN-08 V1 Volt X1 ~ IN-11 V1 Perc y2:
You can set the slope and offset value for the input
voltage.
IN-16 V1 Inverting : If you set at No. 1 Yes, you can reverse the present revolution
direction.
IN-17 V1 Quantizing : used when there is a lot of noise in the analog signals input into
the terminal. You can also reduce noise to some extent by using the IN-07 low pass filter
value but the higher the value is, the responsiveness becomes slower and pulsation of a
long cycle might occur. The resolving power of output frequency for analog input
decreases but the noise effect is reduced by the quantizing function in a system sensitive
to noise.
The set quantization value is the percentage of the maximum analog input value.
Therefore if the maximum input value is 10V and the quantization value is set at 1%, the
frequency changes by 0.06Hz (when the maximum frequency is 60Hz) at an interval of
0.1V. The output frequency when the input value increases and decreases differs so that
the effect of analog input value fluctuation is removed.
If the quantization value is quadrisect and the analog input value increases, when a value
three fourths the quantization value is input, the output frequency changes and from the
next step it increases along with the quantization value as follows. If the analog input
value decreases by 1/4 of the quantization value, the output frequency changes.
V1 input
Set
Frequency
t
Set Frequency
IN- 10 IN- 08
V1 Input
IN-09
IN-11