6-6 PID control methid(Flex PID Method add from Ver 1. .2)
MAC3 equipped with flex PID which can be suited SV (target value) change followingness as a disturbance in
addition to the usual type SHIMAX PID which can be suited for a few target of a disturbance element (factory
sewtting)
This is explainaton a modification method of two tyoes PID method both SHIMAX PID methid and Flex PID
method.
(1)Setting of PID method
3seconds 3seconds
: SHIMAX PID
: Flex PID
Press key 3seconds at each setting lead screen from Mode 1 to Mode 9 , it move to the screen that can
be shoosen both SHIMAX PID or Flex PID.
（2）About the factor used for Flex PID.(Add from ver 1. 2*)
There are a factor for SV change followingness and a disturbance response factor and in addition to
the SHIMAX PID method, P (proportional band), I (integration time) and D (derivative time) in flex PID,
and it's possible to set from 1 to 3 at PID setting screen of output 1 and 2.
.At PID setting screen it can be moved to setting screen by pressing key for 3seconds.
Move to setting screen by pressing key, move to setting screen by pressing key, move to
setting screen by pressing key, move to PID setting screen by pressing key 3 seconds at setting
screen.
Same as 、、、
and
3seconds 3 seconds 3seconds 3seconds
（３）Adjustment of each Factor
Auto tuning function calculates standard PID for the turbulence response but best value is not necessarily
obtained for all applications.
When the auto tuning function finished, it should be confirmed whether the auto tuning result is excellent by
giving turbulence by intention while checking the control result.
The integration limitation coefficient is trimmed as an adjustment of the overshoot and undershoots. When
is enlarged, it becomes easy for the overshoot and undershoot to go out though the restoration speed
quickens.
setting range=0.00～1.00 Default Value(Value of Output1 0.4 as same Output 1 &2)
(0.8 As Reverse-characteristic Output 1& 2)
Adjustment of follow for Start up and SV change
The turbulence response and the SV change follow can be individually set by Flexible PID method in
MAC3.It already set up the turbulence response, and now set it according to the purpose based on the
table below.
setting range＝０．００～１．００ Default value（ＦＩＸ： ＝０．４０ ＝１．００ ）
（ＰＲＧ： ＝０．２０ ＝０．２０ ）
ｓｈould be reduced when you want to improve the step response at the SV change and the
start-up, should be expanded when you wants to reduce the overshoot at the step responds and
to reduce the output change.
should be reduced when you want to improve the follow performance at the lamp control,
should be expanded When you wants to reduce the overshoot at the lamp ends and to reduce the
output change
７．Ｔ
７．Ｔ７．Ｔ
７．Ｔo
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ouble Shooting
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7
77
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-1. Cause and
1. Cause and 1. Cause and
1. Cause and T
TT
Treatment of
reatment of reatment of
reatment of M
MM
Main
ain ain
ain D
DD
Defects
efectsefects
efects
Contents of defects Cause Treatment
Error message display Refer to cause and treatment of
error
display
Refer to cause and treatment of error
display
PV display is not normal Mismatch of instrument and input.
Fault in the wiring.
Type code, check of specification.
Check of wiring.
Display disappeared and
does not operate
Power is not supplied.
Abnormality of instrument.
Check of a power supply (voltage of
terminal, switch, fuse, wiring).
Key operation impossible
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