Page 9 - Industrial Technology Extra - 26th May 2020

a Negri Bossi V680 injection moulding machine in system and invest further in modernising the
its processes. Built in 1999, this machine had machine?
served the company well for years. However, it was The manufacturer turned back to Pressure
limited in its output with a screw diameter of Design, which immediately set out to develop a new
100mm and was incompatible with recycled control system.
polyvinyl chloride (PVC).
To overcome these limitations, Pressure Design New automation
modified the machine so that it became compatible Pressure Design promptly arranged an assessment
with recycled PVC feed. The machine could now of the control system and the input/output (I/O)
also produce 30kg of product by increasing the requirements. Following this, the engineers realised
screw and barrel diameter to 260mm. The project that embedded PCs and TwinSAFE I/O terminals,
was a success. each by Beckhoff, were the ideal choice and placed
However, sometime afterwards, the control the order.
system for the V680 failed. Due to the age of the “We have worked with Beckhoff control systems
overall system, processor cards for the control in the past and know that they are incredibly
system were no longer available. The company capable and versatile,” says James Penty, control
faced a dilemma. Should it scrap its recently systems engineer at Pressure Design. “When we
modified machine and outlay the cost of a new received the project brief, we knew that Beckhoff’s
injection moulder — as many manufacturers would products would be the right choice to handle the
likely do? Or, should it seek an alternative control multitude of I/O points for the application.”

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Ave 2, Station Lane Ind Est,
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www.knf.de
info@knf.co.uk
www.knf.co.uk