Cleveland Motion Controls WebPro Winder Tension ControllerMWP-12664 REV BA - Manual (Page 22)

AO-70171
21
Revision BA
WebPro Winder Tension Controller
Output Level Limit
In Output trim only - NO mode, this item should be set to a value equivalent to the winder drive speed
input voltage at maximum speed. If the winder drive speed input at maximum speed is 10V this item
should be set to 100%, if the winder speed input at maximum speed is 5V set this to 50%. In Output trim
only - YES mode, this item should be set as in Maximum trim, see below.
Output Level Bias
(Used in Output trim only - NO mode)
This item will output a signal at all times, for example to overcome friction in the controlled drive.
The value of this item will reduce as the line speed increases so that at maximum line speed the bias is
reduced to zero, this is because a maximum of 10V only can be output from the Controller.
This bias does not operate with Output trim only - YES, the controlled drive should provide this.
PI Stability Settings
There are two methods of setting the PI stability; through the Product Parameter menu with the machine
at rest or through the Adjust PI stability menu with the machine running.
Access the Adjust PI stability menu from the Commissioning menu. Run the machine with the Controller
in Auto at a Tension Set Point of approximately 50%. Use the SCROLL keys to select the parameter to be
changed and adjust the parameter using the numeric keys or the +/- keys. Press the CONFIRM key to
implement and save the change. An asterisk alongside the Product Number indicates that a parameter
has been changed and that the CONFIRM key must be pressed to implement and save the change.
When the best performance is achieved stop the machine, remember to press CONFIRM and then press
SET UP to return to the Commissioning menu.
To simplify the tuning there are five factory set PI values. One of these values should be suitable for most
applications. If it is found necessary to apply different PI values, select Custom and starting from PI
values that gave stable but sluggish operation, reduce the P band % value and reduce the I time value
until the desired performance is achieved. Remember to press the CONFIRM key before exiting the
Product Parameter or the Adjust PI stability menus in order to implement and save any changes.
The five preset PI values are:
very slow slow medium fast very fast
Proportional band 2000% 1200% 800% 500% 200%
Integral time 20 sec 12 sec 8 sec 5 sec 2 sec
Maximum Trim
(Used in Output trim only - NO mode)
Set this item to a value which gives best overall performance. Too large a value may apply too much
correction and make the system unstable. The value should be sufficient to compensate for tension
disturbances, diameter calculator errors and any other errors. Extensible materials may require a trim
value higher than more rigid materials. As a guide set this value to 10%.
PRODUCT NUMBER
PI STABILITY
MAX TRIM
PROPORTIONAL BAND
INTEGRAL REPEAT
1 *
MEDIUM
800%
8S
10%
% OUTPUT
TENSION S.P.
45 N