Simex multicon cmc-141, Руководство пользователя

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User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
Arrows placed in the upper right corner of the screen allow switching
between controllers to configure settings of controller parameters. The
middle button allows direct selection of specific controller from the list.
The parameters of Controllers are:
– Name – it gives the name to the Controller,
–
Mode
– in this parameter user can select control mode which is used to controller
calculation (algorithm), there are 3 options:
•
PD
- proportional–derivative mode,
• PI - proportional–integral mode,
• PID - proportional–integral–derivative mode,
– Dead zone - this parameter determines how much the process variable must
change in relation to its value in the previous cycle before it will be noticed by the
controller, it means that the output of the controller will be changed if the difference
between
Set point channel
value and
Feedback channel
value (more about
Set point channel and Feedback channel parameters see Chapter 7.8.7. Logical
Channels - Controller mode ) exceeds the Dead zone value,
– Controller parameters parameter block - this block allows the user to set PID
coefficients:
•
P coefficient – this parameter is visible always, allows to set value of the
proportional coefficient,
•
I coefficient
– this parameter is available for
PI
and
PID
mode and allows to set
the integral coefficient,
• D coefficient - this parameter is available for PD and PID mode and allows to
set the derivative coefficient,
• Differentiated signal - this parameter is available for PD and PID mode and
allows the selection of the option (see Fig. 7.109 and Fig. 7.110 ):
◦
feedback (measured)
- in this option the value of
Feedback channel
is
directly sent to
D term
, which allows the fast response of the device to fast
changes with the controlled object,
◦ error (deviation) - in this option the value of Feedback channel is send to
D term after calculation of error output and checking exceeds the range of
Dead zone , this option is set for slow changes controlled object,
– Controller output parameter block - this block has parameters:
•
Offset
- value of this parameter causes offset of controller output value,
• Low output limit – defines low limit of the controller output signal value,
• High output limit – defines high limit of the controller output signal value,
– Initial conditions parameter block has following options:
• Init type – has two options:
◦
No init (internal state 0)
– during start of the controller its output is in 0
state,
◦
Value
– allows to set controllers output state during its start depending on
Low output limit and High output limit parameters,
• Initial output – parameter is visible for Init type: Value ; defines controllers
output state, where 0% corresponds to Low output limit and 100% corresponds
to High output limit ,
Note!
After offset the output signal, the output value is limited to the range set in
Low output limit
and
High output limit
parameters (see
Fig. 7.110
),
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