7. WEB Control Application
7-34
200[%]. If the upper limit of PID controller is set as 100[%], however, the final output of PID controller becomes
100[%].
Function
Code
Loader Display
Name of Function
Set Range
Unit
Factory
Default
WEB_39
Proc Pos Lmt
Process PID Positive Limit
-100.0 ~ 100.0
%
100.0
WEB_40
Proc Neg Lmt
Process PID Negative Limit
-100.0 ~ 100.0
%
-100.0
14)
WEB_41 PID Out LPF : Process PID output LPF
This function sets LPF time constant against the process PID controller final output value. As the time constant
increases, the responsiveness of PID controller output gets slower, but its stability increases.
Function
Code
Loader Display
Name of Function
Set Range
Unit
Factory
Default
WEB_41
PID Out LPF
Process PID output LPF
0.00 ~ 100.00
sec
1.00
15)
WEB_42 PIDOGainRe : Rewind-use Process PID Output Gain
16)
WEB_43 PIDOGainUn : Unwind-use Process PID Output Gain
This function sets the final output gain of Process PID controller. You may set WEB_42 PIDOGainRe in case of
winding the web , that is, when setting “Rewind” in
WEB_17 Re/Un Wind. On the contrary, you may set WEB_43 in
case of unwinding the web, that is when setting “Unwind” in
WEB_17 Re/Un Wind. The set value is the [%] value
against the maximum line speed command
. For example, if you set WEB_44 PID Type to “Fixed” and PID output
Gain to 10[%] where the line speed command is 50[%], the final line speed command becomes 60[%]. In case
the set value of PID output Gain is (-), PID controller operates in reverse direction. This is useful in the sensor in
inverse proportion. For example, if the highest pressure falls under the 0[V] voltage of loadcell and the final
pressure falls under 10[V] voltage of loadcell, you may use it by setting PID output Gain as (-) value.
In case of Process PID control, if the line speed command is 0 where PID output is in minus value, the
motor may rotate in reverse direction. To avoid this, iV5 is programmed in such manner that it cannot
be operated in reverse direction when the PID output is larger than the line speed command in
internal S/W.
Function
Code
Loader Display
Name of Function
Set Range
Unit
Factory
Default
WEB_42
PIDOGainRe
Rewind-use Process
PID Output Gain
-250.0 ~ 250.0
%
0.0
WEB_43
PIDOGainUn
Unwind-use Process
PID Output Gain
-250.0 ~ 250.0
%
0.0
17)
WEB_44 PID Type : PID Controller Type Setting
18)
WEB_45 Min FPID : Minimum PID Output Setting
In this function, there are two (2) types of Process PID controllers. If WEB_44 PID Type is set to
“Fixed”
, a certain
value of PID controller is output regardless of the line speed command. That is, the final line speed command is
the sum of line speed command and PID output. For example, if the line speed command is 50[%] and PID
output is 10[%], the final line speed command becomes 60[%]. If
the line speed command is changed from 50[%]
Содержание LSLV-iV5 Series
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