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3 SPECIFICATIONS
MELSEC-Q
(3) Primary delay filter
By setting a time constant, transient noise is eliminated and smoothed measured
temperature value can be output. Depending on the time constant, the degree of
smoothness is changed.
The relational expression between the time constant and measured temperature
value is shown below.
[In the case of n=1]
Yn=1
[In the case of n=2]
Yn = Xn -
1
+
∆
t
(Xn - Xn -
1
)
∆
t + TA
[In the case of n 3]
Yn = Yn -
1
+
∆
t
(Xn - Yn -
1
)
∆
t + TA
Yn: Current measured temperature value
∆
t: A/D conversion time (0.04ms)
N : Sampling count
TA: Time constant (s)
Yn-1: Preceding measured temperature value
Xn: measured temperature value before smoothing
* Conversion completion flag (buffer memory address10: Un\G10) turns on at n
Setting range of time constant is 40 to 5000ms.
When setting a value out of the setting range, an error (error code 32 ) occurs.
[Example] When the temperature input value is changed from 25.000 to 26.000
In the time constant setting of 1000ms (1s) measured temperature
value is changed as shown below.
At 1000ms (1s) after the temperature input value is changed to 26.000
, the measured temperature value reaches 63.2% of the value
output in the case of selecting the sampling processing.
25
25.2
25.4
25.6
25.8
26
26.2
0
1000
2000
3000
4000
5000
6000
Elapsed time (ms)
(
)
25
25.2
25.4
25.6
25.8
26
26.2
Temperature input value
Measured temperature value
T
em
perat
ur
e in
p
ut
v
alue
M
easu
re
d
te
m
perat
u
re
value
Содержание Q64RD
Страница 2: ......
Страница 99: ...5 17 5 17 5 UTILITY PACKAGE GX Configurator TI MELSEC Q X Y Monitor Test 1 OMC refresh ...
Страница 108: ...6 3 6 3 6 PROGRAMMING MELSEC Q 2 Program example 6 1 2 Program example used when utility package is not used ...
Страница 113: ...6 8 6 8 6 PROGRAMMING MELSEC Q 2 Program example ...
Страница 114: ...6 9 6 9 6 PROGRAMMING MELSEC Q ...
Страница 178: ...App 19 App 19 APPENDICES MELSEC Q Appendix 3 External Dimension Diagram 1 Q64RD Q64RD G Unit mm ...
Страница 181: ...WARRANTY ...
Страница 183: ......