Sterling 882.00722.00 manual Problem Corrective action

Page 46

Problem

Corrective action

PLC Module Loaded

Weigh hopper occasionally overfills.

Normal after a software upgrade. Follow on-screen instructions.

Lower the hopper size under “Hopper Setup”

Problem

Corrective action

	Recorded Inventory Totals	Check the hopper’s scale calibration and verify that the hopper is
	Recorded Inventory Totals	not overfilling. If the hopper is overfilling, adjust your hopper
	don’t match what I’ve actually
	don’t match what I’ve actually	size. If this is correct, then you are probably not accounting for
	used
	used	material scrap or other items in your process.
		material scrap or other items in your process.

	Printer did not print	Check that the printer is a SERIAL printer. If not, then you will
	Printer did not print	need to either get a SERIAL printer or purchase a SERIAL to
		PARALLEL converter.

Problem

The feeder calibration values are moving too much.

Corrective action

Check to ensure that the weigh hopper is not touching any part of the frame and that the loadcell bracket is not touching the plastic cover of the loadcell. If these have been verified then check loadcell and replace if necessary.

Problem

Corrective action

I can’t calibrate the Scale without an error message.

This Is caused by the difference in bits not being large enough. Using the Direct Scale Readout, examine current loadcell bits with and without the calibration weight. If the bits do not change significantly, then check for pellets jamming the loadcells and check the loadcell circuit. You might have a bad loadcell.

Note: Other service problems or questions can be answered by contacting the Service Department.

Chapter 6: Troubleshooting

46 of 60

Image 46

Contents GH-M Rate Monitor Allen-Bradley Controller Write Down Your Serial Numbers Here For Future Reference Event of Shipping Damage Shipping InfoUnpacking and Inspection 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 DefectModels Covered in This Manual AccessoriesFunctional Description 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 Mounting Configurations InstallationMechanical Installation Uncrating the EquipmentElectrical Connections Machine MountPneumatic Connections Mechanical Set-up Weigh Hopper InstallationInitial 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 ScheduleElectrical Preventative MaintenanceCorrective Maintenance Internal Components of the Control PanelInput Signals to Programmable Controller Output Signals from Programmable ControllerTroubleshooting IntroductionProblem Corrective action ProblemWarranty Restrictions Warranty and Spare PartsWarranty Specifications Warranty LiabilitiesCustomer Responsibilities Annex B InformationTypical Surge Hopper Assembly Parts List Passwords Addendum Service Supervisor InformationProgrammable Settings Typical Engineering Only Setup Screen Full Hopper Method Percent of hopper Method DefaultExtruder Pulse Count Method WTP/RPM FilterMax Allowed WTP/RPM Mechanical Options ScreenDiagnostics Screen Typical Analog Options Analog options screenAlarm Log Customer Setup MenuPassword Protection 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