Upgrade your existing extrusion line with a DIGIPANEL^® controller by HARREL

From a mechanical standpoint, extruders are just about the same creatures as they were 30 years ago. They may have a more powerful motor, and a jazzier paint job, but fundamentally they are not that much different.

The control systems, however are as different as night and day. Modern closed loop control systems do entirely different things, and in entirely different ways. The one most effective way you can modernize your existing extrusion lines is to replace the original controls with modern, hi-tech closed loop control systems. Harrel, Incorporated has been the pioneer in hi-tech controls for over 41 years:

• Harrel introduced the very first PID (3 mode) temperature controls to the plastics industry in 1967.
  
• The very first microprocessor control for total control of an extrusion line in 1975.
• The first totally controlled melt pumps for plastics extrusion in 1976.
• The first plant-wide control system for the plastics industry in 1968.
• The first total control system for controlling all the dimensions of a tube in the 80's.
• The first commercial system for control of the cross-machine profile in sheet extrusion, using control of the lip temperature of the die zones -- in the early 70's.
• The first barrel temperature control system that could control the temperature of the extruder barrel from a deep well -- down near the plastic, where it counts!
• The first DUOSENSE^® deep-and-shallow well cascade control system which controls from a deep well sensor and can still respond rapidly to changes in the environment -- line voltage, cooling water changes, ambient temperature changes, etc.
  ......And Harrel still offers the most sophisticated extrusion control systems in the industry!!!
  

HOW HARREL CONTROL SYSTEMS DIFFER FROM OTHERS:
Most people naturally assume that all vendors' control systems are more or less the same and differ only in detail. This is definitely not true with extrusion controls. Harrel offers a completely unique system of total control.

• Take tubing extrusion as an example: With other control systems, the operator sets in the parameters of the extruder -- temperature, line speed, air pressure, etc., and then adjusts them by trial and error until the dimensions are on target. This can take an hour or more, even with experienced operators and on straight tubing. For such applications as bump tubing it is far worse, and for double bump tubing it simply becomes impractical.
• Harrel control systems control the dimensions and other characteristics of the product directly and automatically. The operator keys in the dimensions of the product, presses a button, and the system brings the product on spec -- typically in 3-5 minutes. Double bump tubing is no more difficult than single bump.

CP-644 DIGIPANEL^® controller for extruder and melt pump control

• Up to 21 zones of temperature control including both heating-only and heating-and-cooling. All zones full 3 mode (PID) control, with separate trim adjustments on heating and cooling for best performance.
• Optional DUOSENSE^® deep-and-shallow well cascade control.
• AUTOTRIM automatic setting of heat control trim values.
• Up to 3 zones of melt pressure are monitored. Fast-acting feedback control synchronizes extruder to melt pump.
• Two stage melt pressure alarm: First level warns operator, second level shuts system down.
• Commands and monitors screw RPM; monitors extruder motor amps.
• DIGISYNCH control of melt pump RPM; monitors melt pump motor amps.
• Melt temperature process control.
• Melt pressure process control optional.
• Central display of out-of-tolerance zones, and of alarm history.
• Computer compatible.
• Plug-in 100 watt power modules for operation of external mechanical contactors or light heater loads. Remote power modules for higher power loads.
  

Prices:
CP-644A DIGIPANEL^® extruder controller $6900.00
CP-644B DIGIPANEL^® extruder and melt pump controller $8100.00
PM-102C 100 watt plug-in power modules $25.00 per zone
DUOSENSE deep-and-shallow-well sensing: $110.00 per zone
Consult factory for higher power modules.

CP-875 DIGIPANEL^® controller for TOTAL control of a complete extrusion line

• Upgrade existing extrusion lines for TOTAL control!
• Big 15" flat screen LCD full color display.  Put away your spectacles!
• Includes all features of the CP-873 controller listed below.

Prices:
CP-875 DIGIPANEL^® extrusion line controller: $21,500.00
Power modules priced separately.

CP-874 touch screen DIGIPANEL^® controller for TOTAL control of a complete extrusion line

• Upgrade existing extrusion lines for TOTAL control!
• Flat screen LCD full color display with context-sensitive controls.  Fast and easy to use!
• Includes all features of the CP-873 controller listed

Prices:
CP-874 Touch screen DIGIPANEL^® extrusion line controller: $21,500.00
Power modules priced separately.

CP-873 DIGIPANEL^® controller for TOTAL control of a complete extrusion line

• 14" full color display with full graphics capability.
• Schematic diagrams of the entire extrusion system, with all out-of-tolerance parameters in red.
• Up to 32 zones of temperature handled internally. As many more as desired using external modules. All zones full 3 mode (PID) with separate trim adjustments on heating and on cooling, for superior performance.
• Optional DUOSENSE^® deep and shallow well control gives control from deep well, combined with fast response to external changes, such as line voltage or cooling water.
• Melt temperature process control.
• AUTOTRIM automatic adjustment of temperature trim values.
• Melt pressure process control.
• Speaks 4 languages. A touch of a button brings up all legends in English or any of three other languages.
• Easy to learn -- On screen check-off list leads inexperienced operators through the start-up routines, step by step.
• Trend plots of any 4 parameters of the line.
• Temperature plots.
• Keep-warm mode.
• Unlimited recipe storage on 3 1/2" disks.
• Computer compatible.
• Differential Pressure Control around melt pumps stabilizes throughput to 0.1%.

Prices:
CP-873 DIGIPANEL^® extrusion line controller: $21,500.00
Power modules priced separately.
DUOSENSE deep-and-shallow well sensing: $110 per barrel zone.

CP-667 CONTROL CABINETS

• Your choice of CP-870 series DIGIPANEL^® controller, as described above.
• ....plus Harrel digital drive.
  • DIGISENSE (0.05%) or DIGISYNCH^® (0.001%) speed regulation.
  • Exact synchronization (0.000% steady state synchronization error) of gear pump speed to external puller. Stabilizes cross sectional area of product.
  • Differential pressure control around melt pump stabilizes throughput to 0.1%.
• Ultra high precision control of temperature.
• Solid state power modules provide power control to heaters.
• Automated, closed loop control of product dimensions.
• All mounted in an attractive 6-ft NEMA cabinet with a handy shelf and controls in easy reach on the sloping front panel.
• .... Contact factory for quotation on upgrading your specific system!

To order an upgrade system, fill in the form below and click on "submit". Harrel will enter your order and send you an Email or FAX acknowledgement giving engineering data and credit information. Terms are 1/3 with order,1/3 immediately prior to shipment, and 1/3 net, 30 days. Enter accessories and options as separate items 2, 3, 4., etc.