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New PID2-hot runner controller for up to 24 zones of control

Husky Injection Molding Systems : 07 December, 2004  (New Product)
Husky displayed its newest line of hot runner temperature controllers at EuroMold 2004 in Frankfurt, 1-4 December 2004.
The new LEC line of temperature controllers provide moulders with full-featured hot runner temperature control at an extremely competitive price. Designed for smaller hot runner system applications, the LEC is offered with 2, 6 and 12 zone enclosures. The LEC features a modular design for simple control card removal, addition or replacement. An optional network module allows users to link two 6 or 12 zone enclosures together for up to 24 zones of control. All 6 and 12 zone LEC enclosures come pre-wired to accept the network module, so the module can be ordered up front or added at a later date. With the addition of the network module, the LEC becomes truly full-featured by offering security options, remote input, alarm output, and Husky software including Gammavision, Mold Doctor and Field Calibrator (with a customer supplied laptop or personal computer).

The network module also enables a link to plant monitoring systems. Flexibility has been built-in to the LEC line for global use. It is designed to work with most hot runner moulds operating in the world today.

All LEC controllers are backed by a complete two year warranty and supported by the worldwide service and support network.

“We see the LEC as a true breakthrough in hot runner controller performance and affordability. It provides field-proven Husky quality and reliability at a much lower price. No longer do moulders have to pay a high price to get high quality hot runner temperature control.”

Like all Husky hot runner temperature controllers, the new LEC line features Triangulated Control Technology. Using this unique technology, controllers:

Sense – 20 times per second, Husky controllers precisely measure the thermocouple;

Control – the proprietary self-optimising Husky PID2 control algorithm adjusts if the actual temperature deviates 0.1F (0.05C) from set point. The second derivative (PID2) monitors the actual temperature rate of change. As a result, the LEC module regulates the output to the heater in advance of achieving set point to limit or eliminate over or undershoot.

Actuate – using phase angle fired output, the Husky controller delivers smooth and exact power to each heater in 0.24 VAC increments for the ultimate in temperature control.

By “triangulating” their process with Husky, moulders can achieve better hot runner temperature control, which can mean: – enhanced part quality, – reduced scrap, – improved part weight consistency, – material savings, – higher profit margins. In addition, Husky controllers feature mould protection through closed loop wet heater bake out.

120 times per second (at 60Hz), Husky controllers check every heater for a short, steadily ramping up the voltage for the fastest possible time to set point. If the heater is wet or shorted the output is adjusted within 8.3 milliseconds to protect the heater, cables and controller.
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