5 - 5
Input Process Functions
5-30
This section uses diagrams to describe input processes.
■
PV input 1 channel model
NOTE
The use of equalizer (approximation by linearization table) is shown in the figure
below.
When a sensor with curved characteristics is used to measure PV, a linearization
table is used.
Analog input 1
Cold junction compensation
Wiring resistance compensation
A/D conversion
Input range type
Square-root extraction
Equalizer (approximation
by linearization table)
Upper and lower limit alarm
Temperature unit range
Upper and lower limit value scaling
Bias
PV (PV1)
Digital filter
PV shift
Setting: setup data
C01
(For resistance temperature detector)
(For thermocouple)
Setting: setup data
C07
,
C10
(For DC current or voltage)
Setting: setup data
C08
,
C09
(For DC current or voltage)
Setting: setup data
C04
to
C06
(For thermocouple or resistance temperature detector)
Setting: setup data
C02
,
C03
Setting: setup data
C30
Variable parameters
PA51
to
PA70
Setting: variable parameter
PA13
Setting: program setting PV shift item
Setting: variable parameter
PA12
Chapter 5. FUNCTIONS
Actual PV
PV input (sensor output)
Correction point no. 1
Correction point no. 2
Correction point no. 3
Correction point no. 4
Correction point no. 5
Correction point no. 6
Correction point no. 7
Correction point no. 8
Correction point no. 9
Correction point no.10
No.2
No.3
No.4
No.5
No.6
No.7
No.8
No.9
No.10
No.1
: (right facing arrow) indicates negative correction.
: (left facing arrow) indicates positive correction.
: (bullet) 0 indicates correction.
