Sterling 882.00722.00 manual Open, Weigh Hopper

Page 17

OPEN

Dump cone gate open all the time

 

 

CLOSE

Dump cone closed all the time

 

 

Each surge hopper is supplied with a lid. Standard lids contain a cutout to accept a vacuum receiver. A blank lid may also be provided if specified.

If the rate monitor is being refilled from a mezzanine-mounted GH Hopper, the surge hopper lid will have a tube stub on it.

The surge hopper will be mounted on the frame at the factory. The 24V dc solenoid will also be factory wired. In some rare cases, it may be necessary to remove the surge hopper for shipping purposes

Weigh Hopper

The weigh hopper is located within the GH frame. The hopper size is set within the controls. Default for refilling to occur is 50% of the weigh hopper size.

The weigh hopper on the rate monitor is used to weigh the material entering the extrusion process. Once the weigh hopper goes below 50% of its set weight capacity the solenoid valve on the surge hopper will open, allowing material to fall from the surge hopper to the weigh hopper. The surge hopper solenoid will close once the weigh hopper reaches its set weight capacity.

Details for installing and removing the weigh hopper are included in the next section. The weigh hopper will need to be installed before operation can begin. It is necessary to remove the weigh hopper for shipment, so the loadcell is not damaged.

When the weigh hopper is installed use care not to damage the load cell. Position the hopper

Note: Use care when replacing the weigh hopper, since the load cells are delicate weighing instruments and can be easily damaged. Do not use force to push in the weigh hopper.

Note: Load cells, if damaged, will have to be sent back to the manufacturer for testing and evaluation.

Note: Make sure no part of the load cell bracket is touching the plastic housing on the load cell. This could result in inaccurate weight readings. If necessary the plastic on the loadcell can be trimmed back

tube stub as close to the center of the hole in the bottom of the frame as possible.

Operator Control Panel Display (optional on GH-M units, 1 required per facility for setup and Maintenance)

The operator control panel includes an 8-foot (2.4 m) cable and can be remote mounted (not recommended) adjacent to the GH Hopper. The panel can be unplugged and removed if necessary. The cable provides 24VDC power to the display, as well as communications to the PLC.

A programmable logic controller (PLC) controls the GH operation. This design provides excellent performance along with an easily replaceable control panel in the unlikely failure of any computer or electronic part.

Chapter 2: Functional Description

17 of 60

Page 16 Page 18
Image 17
Page 16 Page 18
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 CompleteCredit Returns Warranty ReturnsReturns Table of Contents Maintenance Safety Symbols Used in this Manual SafetyHow to Use This Manual Safety Tags and Warning Labels Description Wear Safety Glasses and Work Gloves Follow all Safety CodesOperator Responsibility ResponsibilityGeneral Responsibility Remember Reporting a Safety Defect Maintenance ResponsibilityFunctional Description AccessoriesModels Covered in This Manual General DescriptionCustomer Service Controller Features Typical Features and ComponentsMechanical Features Surge Hopper Extruder Inductive Proximity SwitchSystem Component Description Weigh Hopper OpenFunction Typical GH-M Operator Screen Operator Screens Common to all GH Systems Typical Setup Screens Ethernet Module Optional ComponentsLow Level Proximity Sensors Safety FeaturesPneumatic Slide Gate below surge hopper 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 TimeOperator Displays GH-M Operation ProceduresOperation Typical Operator Screen for GH Full Control system GH Full Control Operation ProceduresGH-F Gravimetric Feeder Operation Procedures Typical Manual Control Operator Screen Common ScreensPrint Inventory Alarm FlagsAlarms with Descriptions 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 Programmable Settings Addendum Service Supervisor InformationPasswords 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 Contract Department Service Department Sales DepartmentParts Department
Top Page Image Contents