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7-29
Chapter 7. PARAMETER SETUP
Setting
• The MV upper and lower limits (
oL, oH) function as integrating
limits. When the MV reaches the upper or lower limit,
integration no longer functions. This prevents reset wind-up
that occurs when the PV has not risen for a long time.
• Manual reset (
rE) is a setting for eliminating offset that occurs
during proportional action (integrated action disabled). For
manual reset, set the MV ideal for deviation 0.
• Increasing the brake (
br) value increases the overshoot inhibit
effect. However, it also lengthens the rise time.
No. Item Code
Item
28
dP - 23
Disturbance inhibit
proportional band
(PID set 2-3)
29
dI - 23
Disturbance inhibit reset
time
(PID set 2-3)
30
dd - 23
Disturbance inhibit rate
time
(PID set 2-3)
31
P - 24
Proportional band
(PID set 2-4)
32
I - 24
Reset time
(PID set 2-4)
33
d - 24
Rate time
(PID set 2-4)
34
oL - 24
MV lower limit
(PID set 2-4)
35
oH - 24
MV upper limit
(PID set 2-4)
36
rE - 24
Manual reset
(PID set 2-4)
37
br - 24
Brake
(PID set 2-4)
38
dP - 24
Disturbance inhibit
proportional band
(PID set 2-4)
39
dI - 24
Disturbance inhibit reset
time
(PID set 2-4)
40
dd - 24
Disturbance inhibit rate
time
(PID set 2-4)
41
P - 25
Proportional band
(PID set 2-5)
42
I - 25
Reset time
(PID set 2-5)
43
d - 25
Rate time
(PID set 2-5)
44
oL - 25
MV lower limit
(PID set 2-5)
45
oH - 25
MV upper limit
(PID set 2-5)
46
rE - 25
Manual reset
(PID set 2-5)
47
br - 25
Brake
(PID set 2-5)
48
dP - 25
Disturbance inhibit
proportional band
(PID set 2-5)
49
dI - 25
Disturbance inhibit reset
time
(PID set 2-5)
50
dd - 25
Disturbance inhibit rate
time
(PID set 2-5)
51
P - 26
Proportional band
(PID set 2-6)
52
I - 26
Reset time
(PID set 2-6)
53
d - 26
Rate time
(PID set 2-6)
54
oL -26
MV lower limit
(PID set 2-6)
Factory
Setting
100.0
120
0
100.0
0.0
0
0.0
100.0
50.0
0
100.0
120
0
100.0
0.0
0
0.0
100.0
50.0
0
100.0
120
0
100.0
0.0
0
0.0
User
Setting