Sterling 882.00722.00 manual System Component Description, Extruder Inductive Proximity Switch

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•Optional Ethernet communications

System Component Description

This section describes the various components of the rate monitor system.

Extruder Inductive Proximity Switch

The extruders RPM must be reported to all GH, GH-M, and GH-F Systems for them to function. To accomplish this, an inductive proximity switch is provided to let the controller know the RPM of the extruder. This switch should be field mounted in an appropriate way to read the extruder’s true RPM. It is important this switch is reading the actual RPM of the Extruder, and not an RPM before a gearbox, for example. Chapter 3 will detail the installation and wiring of this component. Because it is field mounted, wiring of the proximity switch will NOT be done at the factory and we do not provide any custom mounting brackets for your application as these vary depending on the equipment.

This measurement can also be achieved by writing the extruder’s rpm through communications (see document at the end of this manual for details, NOT AVAILABLE FOR GH-F FEEER UNITS). If this is done through communications then it eliminates the need to install the extruder proximity switch.

Surge Hopper

The surge hopper is located on top of the GH frame. These hoppers store a supply of material to fill the weigh hopper. The surge hopper is sized based on the total throughput of the extrusion rate monitoring system. Each surge hopper contains a 24V DC solenoid that is used to open and close the internal dump cone. The internal urethane dump cone is mechanically opened and closed with a compressed air cylinder.

The GH’s surge hopper does not include any level indication devices as standard equipment. Optional surge hopper low-level sensors are available. The GH controller will alarm if it runs out of material while trying to fill the weigh hopper, but low-level sensors will alert floor personnel to the problem sooner. If an optional low-level sensor is purchased, it will activate a visual alarm. This optional proximity switch can be mounted anywhere the customer desires and is not mounted unless specifically requested.

The refill system is equipped with a manual key switch to open and close the surge hopper. This three position key switch is located on the front of the PLC enclosure.

Figure 5: Typical Surge Hopper

Figure 6 Refill Switch Positions

Position

Description

 

 

 

 

 

AUTO

The rate monitor controller automatically controls surge hopper

 

functions.

 

 

 

 

 

 

 

 

 

 

Chapter 2: Functional Description

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Contents GH-M Rate Monitor Allen-Bradley Controller Write Down Your Serial Numbers Here For Future Reference Shipping Info Unpacking and InspectionEvent 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 Follow all Safety Codes Wear Safety Glasses and Work GlovesGeneral Responsibility ResponsibilityOperator Responsibility Remember Maintenance Responsibility Reporting a Safety Defect Accessories Functional Description Models Covered in This Manual General DescriptionCustomer Service Mechanical Features Typical Features and ComponentsController Features System Component Description Extruder Inductive Proximity SwitchSurge Hopper Open Weigh HopperFunction Typical GH-M Operator Screen Operator Screens Common to all GH Systems Typical Setup Screens Optional Components Ethernet ModulePneumatic Slide Gate below surge hopper Safety FeaturesLow Level Proximity Sensors Installation Mechanical InstallationMounting Configurations Uncrating the EquipmentElectrical Connections Machine MountPneumatic Connections Weigh Hopper Installation Initial Set-upMechanical Set-up Extruder RPM connectionFinal Connections Display Startup ScreenController Set-up GH Controller Menu Structure Recipe Page StartGH Calibration Weigh Hopper Load Cell CalibrationDisplay Calibration Menu Screen Hopper Size Setup WTP/RPM CalibrationExtruder Setup Hauloff Setup and Encoder CalibrationAlarm Setup Network SetupSetting Date and Time PanelView Configuration ScreenOperation GH-M Operation ProceduresOperator Displays GH Full Control Operation Procedures Typical Operator Screen for GH Full Control systemGH-F Gravimetric Feeder Operation Procedures Common Screens Typical Manual Control Operator ScreenAlarms with Descriptions Alarm FlagsPrint Inventory Maintenance Preventative Maintenance SchedulePreventative Maintenance Corrective MaintenanceElectrical Internal Components of the Control PanelInput Signals to Programmable Controller Output Signals from Programmable ControllerTroubleshooting IntroductionProblem Corrective action ProblemWarranty and Spare Parts Warranty SpecificationsWarranty Restrictions Warranty LiabilitiesCustomer Responsibilities Annex B InformationTypical Surge Hopper Assembly Parts List Passwords Addendum Service Supervisor InformationProgrammable Settings Typical Engineering Only Setup Screen Percent of hopper Method Default Extruder Pulse Count MethodFull Hopper Method WTP/RPM FilterMax Allowed WTP/RPM Mechanical Options ScreenDiagnostics Screen Typical Analog Options Analog options screenCustomer Setup Menu Password ProtectionAlarm Log UnitsBelow are the items that can be accessed for the GH Hopper Allen-Bradley Communications ManualAppendix Reload TOO Long Fixed Decimal Explanation Parts Department Service Department Sales DepartmentContract Department
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