Preventative Maintenance, Electrical | Sterling 882.00722.00

5-2 Preventative Maintenance

Our GH Hoppers need periodic maintenance to provide long dependable service. Check these elements regularly:

•Check functionality of safety circuit daily.

•Maintain proper air pressure and drain water from trap assembly on regulator – as required.

WARNING! Always remove plug and disconnect power before servicing hopper.

WARNING! Always read operating manual before operating or servicing hopper.

5-3 Corrective Maintenance

Electrical

This section is designed to give the operator an overview of the electrical system that controls the GH Hopper system. Since the hopper’s control panel is a self-contained pluggable item, seldom will a maintenance person be required to enter the control panel. For purposes of understanding the system, it is advisable that the maintenance personnel be familiar with not only the internal workings of the control panel, but also with the input and output signals to the GH Hopper.

This section includes the following:

•Internal components of the control panel

•Input signal to the control panel

•Output signals from the control panel

Internal Components of the Control Panel

Note: See Installation Packet supplied with unit for complete electrical schematics.

This section describes the internal components of the GH Hopper system control panel. It is not the intent of this section to completely familiarize the reader with the details on industrial control panel construction or standards, but simply to familiarize the reader with the major components inside the control panel.

The customer must supply 120/1/50 or 60 (or 220/1/50 or 60) via wires L1 & L2 (N). Please insure that the earth ground connection is properly connected to an established earth ground.

•“Power on” is indicated by a lighted on/off switch.

•“Reload” switch controls the vertical reload gate above the hopper.

•“Safety Active” light displays status of safety interlock circuit. Audible alarm horn alerts operator to GH Hopper fault.

Chapter 5: Maintenance

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Sterling 882.00722.00 manual Preventative Maintenance, Corrective Maintenance, Electrical

Contents

GH-M Rate Monitor Allen-Bradley Controller Write Down Your Serial Numbers Here For Future Reference If the Shipment is Not Complete Shipping InfoUnpacking and Inspection Event of Shipping Damage Returns 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 Codes General Responsibility ResponsibilityOperator Responsibility Remember Reporting a Safety Defect Maintenance Responsibility General Description AccessoriesFunctional Description Models Covered in This Manual Customer Service Mechanical Features Typical Features and ComponentsController Features System Component Description Extruder Inductive Proximity SwitchSurge Hopper Weigh Hopper Open Function Typical GH-M Operator Screen Operator Screens Common to all GH Systems Typical Setup Screens Ethernet Module Optional Components Pneumatic Slide Gate below surge hopper Safety FeaturesLow Level Proximity Sensors Uncrating the Equipment InstallationMechanical Installation Mounting Configurations Machine Mount Electrical Connections Pneumatic Connections Extruder RPM connection Weigh Hopper InstallationInitial Set-up Mechanical Set-up Display Startup Screen Final Connections Controller Set-up Recipe Page Start GH Controller Menu Structure Weigh Hopper Load Cell Calibration GH Calibration Display Calibration Menu Screen WTP/RPM Calibration Hopper Size Setup Hauloff Setup and Encoder Calibration Extruder Setup Network Setup Alarm Setup PanelView Configuration Screen Setting Date and Time Operation GH-M Operation ProceduresOperator Displays Typical Operator Screen for GH Full Control system GH Full Control Operation Procedures GH-F Gravimetric Feeder Operation Procedures Typical Manual Control Operator Screen Common Screens Alarms with Descriptions Alarm FlagsPrint Inventory Preventative Maintenance Schedule Maintenance Internal Components of the Control Panel Preventative MaintenanceCorrective Maintenance Electrical Output Signals from Programmable Controller Input Signals to Programmable Controller Introduction Troubleshooting Problem Problem Corrective action Warranty Liabilities Warranty and Spare PartsWarranty Specifications Warranty Restrictions Annex B Information Customer Responsibilities Typical Surge Hopper Assembly Parts List Passwords Addendum Service Supervisor InformationProgrammable Settings Typical Engineering Only Setup Screen WTP/RPM Filter Percent of hopper Method DefaultExtruder Pulse Count Method Full Hopper Method Mechanical Options Screen Max Allowed WTP/RPM Typical Analog Options Analog options screen Diagnostics Screen Units Customer Setup MenuPassword Protection Alarm Log Allen-Bradley Communications Manual Below are the items that can be accessed for the GH Hopper Appendix Reload TOO Long Fixed Decimal Explanation Parts Department Service Department Sales DepartmentContract Department