172-65710M-04 (SC-F71 Parameters/Functions) 23 Dec 2021
127
5.4 Preventing the Input Flicker
To prevent the input flicker, PV digital filter with the first-order lag calculation is
provided.
Description of function
PV digital filter is software designed to reduce variance of PV caused by noise. Effect
of Input noise can be reduced by setting time constant of PV digital filter based on the
controlled object requirement and its level of noise. Setting a value too small leads to
a poor result of PV digital filter; just as an input response will be poor when setting a
value too large.
Parameter setting
●
Input 1_PV digital filter [Setup Setting Mode: Setting group No. 21 (
Sn21
)]
Parameter symbol
Data range
Factory set value
1. D F
0.0 to 100.0 seconds
0.0: Filter OFF
0.0
●
Input 2_PV digital filter (RS digital filter) [Setup Setting Mode: Setting group
No. 22 (
Sn22
)]
Parameter symbol
Data range
Factory set value
2. D F
0.0 to 100.0 seconds
0.0: Filter OFF
0.0
When Remote setting input is supplied, it is displayed as RS digital filter.
Input 2_Input type is not displayed when
“No function” is selected in Function
block No. 58: Select function for Input 2 (Engineering mode).
Содержание SC-F71
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