YOKOGAWA YS1000 Series, Руководство пользователя

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1-2
IM 01B08D02-02EN
1.2 Compensating or Computing Process
Variables
1.2.1 Input Filter (First-order Lag Operation)
Description
First-order lag operation is performed on each analog input. This function is used if there
are significant variations in the display value such as the presence of noise. The greater
the time constant, the stronger the filtering function.
Input Example of filtering
for 2 seconds
Example of filtering
for 10 seconds
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Setting Details
Parameter Name Setting Range Display Transition and Display Title
PLG1, PLG2
First-order lag time
constant for PV
0.0 to 800.0 sec
Tuning Display > [ SETTING1 ] (Setting
Display 1) or [ SETTING2 ] (Setting
Display 2)
The PLG2 parameter is used for the loop 2.
1.2.2 Square Root Extraction (Low Cutoff Adjustable)
Description
Square root extraction is performed on a process variable (PV). The input and output
characteristics are that input = output at the low cutoff point or below. There is no
hysteresis.
Low cutoff adjustable
Output = input
Output
Input
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Square Root Extraction Characteristics
Setting Details
Parameter Name Setting Range Display Transition and Display Title
PSR1, PSR2 Square root extraction for PV OFF: Without square root extraction
ON: With square root extraction
Tuning Display > Engineering Display >
[ CONFIG3 ] (Configuration Display 3)
PLC1, PLC2
Square root extraction low
cutoff setpoint for PV
0.0 to 100.0%
Tuning Display > [
SETTING1
] (Setting
Display 1) or [
SETTING2
] (Setting
Display 2)
The PSR2, and PLC2 parameters are used for the loop 2.