Set Value (Sv) Setting; H H H H; Pid Constant Setting; H To - Mitsubishi Electric MELSEC Q Series User Manual
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3 SPECIFICATIONS
3.5.14 Set value (SV) setting (buffer memory address: 22
3.5.15 PID constant setting
(buffer memory address: 23
3 - 45
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(1) Sets the temperature for the set value of PID operation.
(2) The setting range is within the temperature setting range specified Input range
(buffer memory address: 20
(3) Setting a value outside the setting range will result in a write error (error code: 4)
and Write error flag (Xn2) turns ON.
(4) The set value varies with the setting increments of iInput range (buffer memory
address: 20
, 40
H
• If the setting increments(1) without a decimal point is set, the value is set in
increments of 1 degree Celsius.
• If the setting increments(0.1) with a decimal point is set, the value is set in
increments of 0.1 degree Celsius. (The value is indicated without a decimal
point.)
H
(1) Sets the proportional band (P), integral time (I) and derivative time (D) for
performing PID operation.
(2) As the proportional band (P), integral time (I) and derivative time (D), set values
within the following ranges.
Item
Proportional band
(P) setting
Integral time (I)
setting
Derivative time (D)
setting
(a) Set the proportional band (P) as a percentage (%) to the full scale of the set
input range. For example, when the Q64TCRT is used, the input range
7 (-200.0 to 600.0°C) is selected, and the proportional band is 10.0%, the
proportional band is set to 80.0°C.
(b) For two-position control
(c) For PI control, set the derivative time to "0".
(3) When executing auto tuning, do not set "0" to the proportional band.
If its setting is "0", auto tuning will not be executed.
1: Two-position control keeps the temperature constant by switching the output
ON and OFF recurrently following two values: 0% and 100% of the
manipulation value relative to the set value (SV).
search engine
H
, 40
, 60
, 80
H
H
H
, 60
, 80
)(refer to Section 3.5.12) as indicated below:
H
H
H
to 25
, 43
to 45
, 63
H
H
H
Address (Hexadecimal)
CH.1
CH.2
CH.3
23
43
63
H
H
24
44
64
H
H
25
45
65
H
H
1, set the proportional band to "0".
MELSEC-Q
, 42
, 62
, 82
)
H
H
H
) (refer to Section 3.5.12).
H
to 65
, 83
to 85
)
H
H
H
H
Setting range
CH.4
83
0 to 10000
H
H
84
1 to 3600
H
H
85
0 to 3600
H
H
Constant for
PID operation
0.0 to
1000.0%
1 to 3600 s
0 to 3600 s
3 - 45
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