Sterling 882.00722.00 Functional Description, Models Covered in This Manual, General Description

Page 13

Chapter 2: Functional Description

2-1 Models Covered in This Manual

This manual provides operation, installation, and maintenance instructions for rate monitors of various extrusion rates and specifications. See below for a list of available models.

•GH-M Rate Monitor Units

•GH Full Control Units with or without Line Speed Control

•GH-F Gravimetric Feeder Units

Model numbers are listed on the serial tag. Make sure you know the model and serial number of your equipment before contacting the manufacturer for parts or service.

GH systems are as varied as the applications they service. All gravimetric rate monitors are sized to meet the specific requirements stated by the Customer at the time of purchase.

2-2 General Description

GH-M Rate Monitor Systems are designed to measure the extrusion rate of plastic pellets and regrind. This measurement can be read at a local display or monitored through the communications using the Ethernet module.

GH Full Control Systems are designed to measure the extrusion rate of plastic pellets and regrind. This system can then control the output of the extruder and hauloff (if using the line speed option) to a desired target value that is entered by the operator. This system can be used for monitoring as well as full control. Some of the configurable methods of operator input are lbs/hr, kgs/hr, feet/min, meters/min, weight/length, and weight/area.

GH-F Gravimetric Feeders are designed to gravimetrically control the feed rate of an additive feeder using a loss-in-weight hopper that is mounted directly on the feeder. This feeder then flows into the extruder. The operator enters in a desired percent. The system continuously measures the speed of the extruder through a proximity switch mounted at the back of the screw (this can also be wrote through communications) and then calculates the extruders throughput based on a volumetric approximation. Based on the entered percent and the current calculated extruder throughput the system then calculates a target lbs/hr or kgs/hr for the feeder. Then based on the measured rate of the additive the GH-F continuously adjust the motor speed of the feeder to achieve accurate results.

Standard equipment is not designed to measure powder or any other materials. Optional equipment may be purchased to measure the extrusion rate of powders.

Accessories

The manufacturer offers a variety of standard options for GH Systems including knife gates, low-level proximity switches, Ethernet communication modules, and hoppers specifically designed to measure the extrusion rate of powders. All accessories are designed and manufactured to ensure proper results for your application.

Chapter 2: Functional Description

13 of 60

Page 12 Page 14
Image 13
Page 12 Page 14
Contents GH-M Rate Monitor Allen-Bradley Controller Write Down Your Serial Numbers Here For Future Reference Unpacking and Inspection Shipping InfoEvent of Shipping Damage If the Shipment is Not CompleteReturns Warranty ReturnsCredit Returns Table of Contents Maintenance How to Use This Manual SafetySafety Symbols Used in this Manual Safety Tags and Warning Labels Description Wear Safety Glasses and Work Gloves Follow all Safety CodesGeneral Responsibility ResponsibilityOperator Responsibility Remember Reporting a Safety Defect Maintenance ResponsibilityFunctional Description AccessoriesModels Covered in This Manual General DescriptionCustomer Service Mechanical Features Typical Features and ComponentsController Features System Component Description Extruder Inductive Proximity SwitchSurge Hopper Weigh Hopper OpenFunction Typical GH-M Operator Screen Operator Screens Common to all GH Systems Typical Setup Screens Ethernet Module Optional ComponentsPneumatic Slide Gate below surge hopper Safety FeaturesLow Level Proximity Sensors Mechanical Installation InstallationMounting Configurations Uncrating the EquipmentMachine Mount Electrical ConnectionsPneumatic Connections Initial Set-up Weigh Hopper InstallationMechanical Set-up Extruder RPM connectionDisplay Startup Screen Final ConnectionsController Set-up Recipe Page Start GH Controller Menu StructureWeigh Hopper Load Cell Calibration GH CalibrationDisplay Calibration Menu Screen WTP/RPM Calibration Hopper Size SetupHauloff Setup and Encoder Calibration Extruder SetupNetwork Setup Alarm SetupPanelView Configuration Screen Setting Date and TimeOperation GH-M Operation ProceduresOperator Displays Typical Operator Screen for GH Full Control system GH Full Control Operation ProceduresGH-F Gravimetric Feeder Operation Procedures Typical Manual Control Operator Screen Common ScreensAlarms with Descriptions Alarm FlagsPrint Inventory Preventative Maintenance Schedule MaintenanceCorrective Maintenance Preventative MaintenanceElectrical Internal Components of the Control PanelOutput Signals from Programmable Controller Input Signals to Programmable ControllerIntroduction TroubleshootingProblem Problem Corrective actionWarranty Specifications Warranty and Spare PartsWarranty Restrictions Warranty LiabilitiesAnnex B Information Customer ResponsibilitiesTypical Surge Hopper Assembly Parts List Passwords Addendum Service Supervisor InformationProgrammable Settings Typical Engineering Only Setup Screen Extruder Pulse Count Method Percent of hopper Method DefaultFull Hopper Method WTP/RPM FilterMechanical Options Screen Max Allowed WTP/RPMTypical Analog Options Analog options screen Diagnostics ScreenPassword Protection Customer Setup MenuAlarm Log UnitsAllen-Bradley Communications Manual Below are the items that can be accessed for the GH HopperAppendix Reload TOO Long Fixed Decimal Explanation Parts Department Service Department Sales DepartmentContract Department
Top Page Image Contents