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The control system of any equipment is fundamental for obtaining high production standards, reliable performance and ease of operation. In cracker or sheeting lines, where several units must run at pre-set speeds and with limited speed tolerances, the control system and the software involved are of crucial importance. In this case, an efficient and reliable cascade control system of all the motors ensures the creation of a uniform and stress-free dough sheet, which in turn produces final products of consistent thickness and dimensions. This consistency has a positive effect on the efficiency obtainable at the wrapping stage.
Another unique feature has been adopted for the sheeting lines since the early 1980s to guarantee precise control of the line speed and of the behaviour of the dough sheet: this is named the “Automatic Dough Sheet Loop Control” and consists of a sensor which detects the loop generated by the dough sheet as it enters the nip of the final gauge rolls. A sophisticated software program automatically adjusts the speed of all the equipment upstream in order to ensure that the dough sheet maintains constant tension as it enters the nip of the final gauge roll. This produces a dough sheet of consistent final thickness and texture, without the operator needing to intervene.
Major brands of PLCs can be supplied to meet the customer’s standards; the highest quality components supplied by the most famous and best-serviced worldwide brands are installed in our panels, in compliance with current regulations.


Sketch illustrating the PLC network which supervises the sheeting line

Electrical control panel of a cracker line. Note the neat internal cabling, the PLC and the inverters which drive in cascade all the motors of the sheeting line

Screenshot of the page which appears on the Operator Interface which shows the actual running condition of the "Automatic Dough Sheet Loop Control" in a cracker line

Sensor of the "Automatic Dough Sheet Loop Control"



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