cs3g-c-series-proton-vietnam-thiet-bi-do-duong-kinh-cap-proton-ptc-vietnam.png
EXTRUSION CONTROL
 
NEXiS® CS3G-C Series Extrusion Controller
Mid-range insulation diameter control with colour LCD touch-screen display.
  • For control of one extruder or capstan drive from one or two diameter gauges.
  • Integrates with Proton Products DG or DG-k Series Diameter Gauges for insulation diameter measurement.
  • Colour 800×480 LCD touch-screen display.
  • Auto-compensation control algorithm adjusts P-term as a function of insulation cross-sectional area.
  • Statistical analysis and Statistical Process Control (SPC) for minimizing material consumption.
  • Panel mounted; optional stand-alone enclosure is available.

 

NEXiS®  CS3G-C Series - front view

Introduction

The Proton Products NEXiS® CS3G-C Series of controllers are for use on wire insulation or other extrusion production lines.
NEXiS® CS3G-C Series controllers connect to Proton Products diameter gauges and speed and length gauges for measurement of insulation diameter and line speed respectively. These measurements are then fed into a PI feedback controller whose fully-isolated and floating output may be used to drive insulation extruders or capstan drives.
Insulation diameter is thus actively controlled and kept in tolerance by the NEXiS® CS3G-C controller.
NEXiS® CS3G-C Series controllers also have advanced features such as a large, high-resolution colour LCD screen with resistive touch panel, password protection, product recipe presets, and Single Scan Flaw Detection (SSFD, for detection of insulation lump and neck flaws).
CS-Operating-Principle

Variants

Variants
Control algorithm
NEXiS® CS3G-C-D Diameter control
NEXiS® CS3G-C-HC Hot-Cold automatic shrinkage compensation control

INSULATION DIAMETER CONTROL

Cold diameter only (single DG / DG-k gauge – CS3G-C-D variant)
CS3G-image-01
The NEXiS® CS3G-C is connected to the Cold DG / DG-k diameter gauge after the water cooling trough. The Cold diameter measurement is used to control the extruder so that the final insulation diameter is held within tolerance. Since the Cold diameter measurement is located far from the extruder, this control system response time is relatively slow (and dependent on the line speed), but the controlled diameter is the final product diameter.
Hot diameter only (single DG / DG-k gauge – CS3G-C-D variant)
CS3G-image-02
The NEXiS® CS3G-C is connected to the Hot DG / DG-k diameter gauge before the water cooling trough. A shrinkage offset due to cooling is set by the operator and used in conjunction with the Hot diameter measurement to control the extruder so that the final insulation diameter is held within tolerance. Since the Hot diameter measurement is located close to the extruder, this control system response time is relatively fast.
Hot and Cold diameters (two DG / DG-k gauges – CS3G-C-HC variant)
CS3G-image-03
The NEXiS® CS3G-C is connected to the Hot and Cold DG / DG-k diameter gauges before and after the water cooling trough respectively. The shrinkage offset due to cooling is automatically calculated from the Hot and Cold diameter measurements and used in conjunction with the Hot diameter to control the extruder so that the final insulation diameter is held within tolerance. Since the Hot diameter measurement is located close to the extruder, this control system response time is relatively fast and the user does not need to estimate a shrinkage offset.

Specifications

Screen Back-lit colour 800×480 LCD display with resistive touch panel
Serial communications RS232 USB CANbus - (for connection to up to 2× DG Series gauges)
Line speed inputs Analogue Two inputs available for 0 to 10V and 0 to 50V analogue line speed signals; end-user configurable scaling
Pulse Two inputs available for 0 to 3V and 0 to 10V pulsed line speed signals; maximum frequency 250 kHz; end-user configurable scaling
4×Relay contact outputs Function (end-user configurable) Gauge OK SSFD lump or neck flaw detected X or Y upper tolerance exceeded X or Y lower tolerance exceeded
X upper tolerance exceeded X lower tolerance exceeded Y upper tolerance exceeded Y lower tolerance exceeded
Electrical Maximum voltage 50VDC / 30VAC
Maximum current 500mA
On resistance (@ 100mA) < 0.1Ω
Off resistance > 10 MΩ
Analogue output 1 Function (end-user configurable) ØX ØXY
Electrical Output voltage range 0V to +10V
Maximum output current 2mA
Resolution 16-bit
Output voltage scaling is end-user configurable
Analogue output 2 Function (end-user configurable) ØY Average Error
Electrical Output voltage range ØY: 0V to +10V
Average Error: -10V to +10V
Maximum output current 2mA
Resolution 16-bit
Output voltage scaling is end-user configurable
Control algorithm Advanced Control Algorithm (ACA)
SPC Graphical histogram Cp Cpk
SPC control Statistical Process Control: minimize insulation material consumption whilst maintaining in tolerance insulation diameter
FFT Fast Fourier Transform: displays amplitude versus frequency of periodic diameter variations
SSFD Single Scan Flaw Detection: detection of lump and neck flaws
Presets Nominal diameter +Tolerance -Tolerance +Flaw (Lump) -Flaw (Neck)
Product recipes 50 sets of product presets may be stored in memory for rapid recall
Statistics Mean diameter Standard deviation (sigma) Maximum diameter Minimum diameter
Specification
Minimum
Typical
Maximum
Units
Weight     2.5 kg
    5.5 lb
Length     231 mm
    9.1 inch
Width     213.1 mm
    8.4 inch
Height     128.5 mm
    5.1 inch
         
Power supply voltage (rms) 85   264 VAC
Power supply frequency 47   65 Hz
Power supply current (rms)     2.5 A
Power consumption     110 W
         
Ambient temperature 5   45 °C
41   113 °F
Relative humidity @ 38°C / 105°F     90 %
Ingress Protection (IP) rating     IP50 -
         
PI Controller output voltage -10   10 V
PI Controller output current     10 mA
PI Controller output resistance     10 Ω
PI Controller resolution     12 bit