BONFIGLIOLI Vectron ACTIVE CUBE, Руководство по применению, Страница: 24 / 44

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5 Function blocks
For winder applications, the special function blocks described below are available.
5.1 Dancer control
The dancer control is a universal-use PID controller. The reference and actual values are defined via
percentage sources set in Parameters
Source Reference Value
801 and
Source Actual Value
802 .
The output is connected as an additional reference frequency directly to the speed controller input.
The dancer control can be used both for controlling a dancer position and for direct tension control,
e.g. via a pressure measuring device.
Control deviation is limited internally to a maximum of 300%.
5.1.1 General control parameters
The controller will only work if the logic source selected via Parameter
PID-Controller Enable
800
has value TRUE.
Parameter Unit Setting range Default settings
No. Identifier
800
PID-Controller Enable
- Sources logic table 7 - Off
Parameter
Source Reference Value
801
reads the reference value of the controller from a percentage
source. A fixed value or the value of an analog input can be selected as the percentage source, for
example. Setting via CAN is also possible.
Parameter
Source Actual Value
802 reads the actual value of the controller from a percentage
source. Normally, dancer position feedback is via an analog input.
Parameter Unit Setting range Default settings
No. Identifier
801
Source Reference Value
- Source percentage table 9 – Zero
802
Source Actual Value
- Source percentage table 9 – Zero
Parameter
Kp
803
sets the P-amplification of the controller. At a Kp of 1.00 the rated frequency of
the drive (
Rated Frequency
375
) is output as the control value at 100% control deviation.
Integral Time T
n
and Derivative Time T
v
are set via Parameters
Tn
804 and
Tv
805 .
Parameter Unit Setting range Default settings
No. Identifier
803
Kp
- -100.00 .. 100.00 1.00
804
Tn
ms 0 .. 600000 250
805
Tv
ms 0 .. 600000 0
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Winding Drive
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5.1.2 Parameters for limitation of controller output and ramping
The controller output is limited via Parameters
Negative Limit Controller Output
806
and
Positive
Limit Controller Output
807
.
Parameter Unit Setting range Default settings
No. Identifier
806
Negative Limit Controller Output
Hz -999.99 .. 0.00 -30.00
807
Positive Limit Controller Output
Hz 0.00 .. 999.99 30.00
In the case of a large control deviation, Parameter
Enable Ramping
811 activates a ramp if the se-
lected logic source is TRUE.
If, when the drive is switched on, the control deviation is higher than the value set via Parameter
Limit Ramp-Switch-On
813 , the output of the controller will be changed at the frequency increment
set in
Ramp Increment
810 until the control deviation becomes smaller than the value in
Limit Ramp-
Switch-Off
812 once.
Parameter Unit Setting range Default settings
No. Identifier
811
Enable Ramping
- Sources logic table 6 - On
810
Ramp Increment
Hz/s 0.01 .. 999.99 15.00
812
Limit Ramp-Switch-Off
% 0.00 .. 100.00 8.00
813
Limit Ramp-Switch-On
% 0.00 .. 100.00 10.00
5.1.3 Behavior in an emergency stop or stop
In the case of an emergency stop or a normal stop, the current output frequency of the controller
( Q.8900 ) is reduced to zero at the emergency ramp.
5.1.4 Parameters for weighting and inversion of the controller output
Parameter
Invert Controller Output
809 inverts the controller output if the selected logic source has
value TRUE.
Parameter
Adapt output by Diameter
815 weights the controller output with actual value parameter
Speed Factor
842 , if the selected logic source has value TRUE. Parameter
Speed Factor
842 corre-
sponds to the diameter (actual value parameter
Actual Value Diameter Dact
841
).
Parameter Unit Setting range Default settings
No. Identifier
809
Invert Controller Output
- Sources logic table 7 - Off
815
Adapt Output by Diameter
- Sources logic table 7 - Off
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Winding Drive
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