Sterling AF-XXX specifications Problem Possible cause Corrective action

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	Problem		Possible cause		Corrective action

			Field contact jumper (J1) has not		Remove jumper and wire the
			Field contact jumper (J1) has not		terminals to the processing
			been removed. AUTO MODE.		terminals to the processing
			been removed. AUTO MODE.		machine relay.
					machine relay.
			Field contact to the processing		Check wiring/check the relay on
			machine has failed.		the processor.
	Motor will not stop.		Motor switch has failed.		Replace.
	Motor will not stop.		Field contact to process machine		Correct.
			Field contact to process machine
			missing or loose.
			missing or loose.
			Control relay has failed.		Replace.
			Motor control has failed.		Replace.
			Optional timer set incorrectly.		Reset.
			Optional timer has failed.		Replace.
			Signal from motor speed sensor		Secure the sensor connections.
			missing.		Secure the sensor connections.
	Motor runs only at maximum		missing.
	Motor runs only at maximum		Motor control has failed.		Replace.
	speed.		Motor speed sensor has failed.		Replace.
			Motor speed sensor magnet		Adjust.
			misaligned.		Adjust.
			misaligned.
			Intermittent signal from motor		Secure the sensor connections.
			speed sensor.		Secure the sensor connections.
	Motor speed not constant.		speed sensor.
	Motor speed not constant.		Motor speed sensor has failed.		Replace.
			Motor control has failed.		Replace.
			Material flow problem.		Inspect for blockage, etc.
	Additive is contaminated by		Feeder was not cleaned		See Section 6-2 on Page 39 for
	color from previous run.		adequately prior to operation.		cleanout instructions.

			Power not applied	Using a volt meter, verify that a
					voltage is measured between the
					L and N terminal block
	Display is blank.				positions.

			Defective unit.		Contact technical service.

	Display is dim.		Display intensity.		Check wiring/check the relay on
	Display is dim.		Display intensity.		the processor.
					the processor.

Additive Feeders

Chapter 7: Troubleshooting

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Contents SF Series Additive Feeders Shipping Information Table of Contents Program Parameter Descriptions Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Responsibility General ResponsibilityOperator Responsibility RememberAdditive Feeder Safety Tags Maintenance ResponsibilityReporting a Safety Defect Standard Features Mechanical FeaturesFunctional Description Models Covered in This ManualOptions Electrical FeaturesController Features Accessories Safety Devices and InterlocksFail Safe Operation Safety Circuit StandardsSafety Device Lock-Outs Installation Supply System InstallationUncrating the Equipment Rigging and Placing the Additive FeederControl Relay Connection Main Power ConnectionElectrical Connections Setup Procedures Determining the Desired Feed Rate110 100 Equipment Needed Calibration ProcedureProcedure Examples Observed Feed RatesInitial Start-up Pre-Startup ChecksStarting Up the Additive Feeder Shutting Down the Additive FeederTimer Module Used as a Cycle Override Safety TimerOperation Start-upCounter Module Elapsed Time ModuleInjection Molding Applications Injection MoldingControl Relay Connection Field Control ProgrammingProgramming Step by Step Guide Resetting the Unit to Un-Programmed StateJP1 Program Enable Jumper Additive Feeders Operation Injection Mode Application Notes Extrusion Applications Extruder Tracking ControlExtruder Tracking Installation and Setup Extruder Tracking EquationValue Mode Running ModeParameter-Selection Mode Resetting the Unit to Un-Programmed State Minimum Input Pulse Rate Input Pulse Signal RequirementsExtruder Tracking Control Application Notes Maximum Input Pulse Rate Minimum and Maximum Percent SetpointsProgram Parameter Descriptions Defining Program ParametersMode 1 Default to Zero Parameter 19 Power-up Value Parameter 35 Signal Input 2 S2 Input Configuration Parameter 36 Signal Input 2 S2 Setpoint Photocopy this page for your maintenance records MaintenancePreventative Maintenance Schedule Preventative Maintenance Material Cleanout/ChangeoverCorrective Maintenance Auger Assembly ChangeoverRemoving Auger Assembly Installing Auger AssemblyMotor Brush Replacement Introduction TroubleshootingProblem Possible cause Corrective action Problem Possible cause Corrective action Additive Feeders Troubleshooting Annex B Information Technical SpecificationsAppendix Drawings and Diagrams Additive Feeder Specifications and Overall DimensionsTypical Additive Feeder Controllers Spare Parts List Exploded Assembly Drawing Parts ListDetail # Part number Part/assembly description One Component Control Enclosure Parts Identification Safety Tag Information Warranty ReturnsReturned Material Policy Credit ReturnsAdditive Feeder Identification Serial Number Tag Company LogoTechnical Assistance Sterling, Inc Th Street New Berlin, WIWorksheet for Charting Feed Rates