Multi-loop controller with adaptive control option

By Control Engineering Staff December 13, 2005

PPC-2000 multi-loop controller from Watlow now includes an adaptive control option for optimal system tuning.

St. Louis, MO —Tru-Tune adaptive control option is now part of Watlow ’s PPC-2000 multi-loop controller. Feature helps fine tune PID (proportional-integral-derivative) control loops and adaptively tunes dynamic systems that would otherwise have to be manually re-tuned by operators.

Option improves tuning by automatically optimizing control parameters whenever necessary to maintain the system’s target temperature and keep a product closer to its ideal processing temperature. PPC-2000, programmable process-control system combines multi-loop process control and programmable logic control into one package. Modular design lets users select a set of hardware and develop a logic program based on specific needs, making it suitable for OEMs, system integrators, and end-users.

Standard firmware option controls up to 48 PID loops. Tru-Tune option offers 32 loops of PID control with up to eight adaptively tuned loops. Base system includes 46 digital I/O points. Optional I/O modules offer digital inputs and outputs, analog inputs and outputs, high-speed counters, ac and dc inputs, and relay outputs. Analog input modules accept mixed sensor inputs. PPC-2000 is applicable in many industries, including semiconductor process equipment, electronic packaging equipment, plastic extrusion and thermoforming equipment, and applications requiring 16 or more temperature or analog inputs.

—Control Engineering Daily News DeskJeanine Katzel, senior editor,