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M A G U I R E   P R O D U C T S ,   I N C .  

 

 

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G R A V I M E T R I C   A U G E R   F E E D E R

 

PRINCIPLE OF FEEDER OPERATION 

 
The MAGUIRE GRAVIMETRIC FEEDER is a rugged industrial auger feeder designed to meter 
precise quantities of color concentrate very accurately into the main flow of virgin material directly 
above the throat of your process machine.  The two 10" square steel plates, separated by 4 steel 
corner posts, form a sturdy, low profile adaptor assembly.  This assembly is drilled with the proper 
bolt pattern and mounted to the throat of your process machine under the main material hopper.  
Natural material flows through the adaptor. 
 
On this adaptor frame, we hang the weighing platform, which then, in turn, supports the hopper 
and auger assembly.  To ensure accurate weight readings, the hopper assembly does not contact 
any stationary part.  The ease of removal allows for easy clean-out of the hopper for color 
changes.  Two butterfly latches allow easy removal of the auger / motor assembly for complete 
access to all areas for 100 percent cleanout. 
 
Virgin material flow is visible through the flow chamber, which uses clear acrylic plastic windows 
and stainless steel baffles.  The baffles direct the flow of natural material so that color is dropped 
into the flow from an air space and is evenly distributed over a steady and predictable flow of 
natural material.  This assures uniform distribution of color into the natural material.  The windows 
provide a clear operator view of the combined flow. 
 
The hopper holds up to 10 pounds of concentrate.  Four sight glasses provide a view of the 
material level.

  

 
PRINCIPLE OF CONTROLLER OPERATION

 

 
The MAGUIRE Gravimetric Controller coupled with two loss in weight load cells, provides the 
precise speed regulation and metering control necessary to assure absolute accuracy over your 
color usage. 
 
Metering rate is directly related to motor speed or motor run time. Accuracy is obtained by 
controlling the exact degree of off-time of the motor.  Feed back from the load cells confirms the 
actual dispense and motor off-time is then adjusted to assure perfect dispense weights over time. 
 
Though use of a stepper motor, RPM is precisely controlled in increments of 200 steps per 
revolution, allowing metering to occur uniformly over the entire screw return cycle (for injection 
molding applications) or though continuous operation (for extrusion applications).  The metering 
rate is constantly monitored and adjusted to maintain accuracy.  Changing cycle times or 
fluctuations in plant voltage are automatically detected and compensated for with no effect on 
metering accuracy. 

Summary of Contents for GRAVIMETRIC AUGER FEEDER MGF-ST

Page 1: ...S INC GRAVIMETRIC AUGER FEEDER MAGUIRE Model MGF ST Touch Screen Controller GRAVIMETRIC AUGER FEEDER INSTRUCTION MANUAL Original Instructions Manual Revision Date December 4 2018 Copyright Maguire Pro...

Page 2: ...U I R E P R O D U C T S I N C 2 G R A V I M E T R I C A U G E R F E E D E R Use this space to record information about your Maguire Machines Serial Number Date of Purchase Model Number ID IP Address...

Page 3: ...e of the Maguire MGF ST it is recommended to read thoroughly these operating instructions Maguire Products Inc accepts no responsibility or liability for damage or malfunction of the equipment arising...

Page 4: ...____________________________________________ 18 Password Management _______________________________________________ 20 Weight Units ________________________________________________________ 20 Volumetr...

Page 5: ...M A G U I R E P R O D U C T S I N C 5 G R A V I M E T R I C A U G E R F E E D E R...

Page 6: ...opening or servicing Use Power Lockout Tagout CAUTION Always wear safety glasses when using this equipment HAZARD AUTOMATIC STARTUP WARNING Feeder may start automatically without warning HAZARD ROTAT...

Page 7: ...time and extruder output Fine Metering Resolution 100 rpm Stepper Motor advances at 200 increments per revolution In combination with digital control the 200 step rotation achieves fine metering reso...

Page 8: ...he natural material hopper will be bolted on top The TOP plate has the ROUND hole The BOTTOM plate has the SQUARE hole MOUNT THE CONTROLLER 3 The CONTROLLER will be mounted to a bar that bolts on the...

Page 9: ...is also used with an extrusion following 0 10 volt signal See the MGF wiring diagram on page 39 10 If optionally ordered with 24 to 120 VDC or VAC plug the SIGNAL gray cord will be plugged into outle...

Page 10: ...wn Ratio LDR Let Down Ratio Percent See page 11 View Screen to view clear or save MGF ID date time totals cycles work order recipe operator See page 33 Injection Recovery Cycle Mode only Displays the...

Page 11: ...lect CONTINUOUS for extrusion where the MGF auger runs continuously In this mode the first step is enter LBS or KILOS HOUR of the extruder on the main screen Next set the LDR Let Down Ratio on the mai...

Page 12: ...ces Display will show the System Preferences categories Press Weight Units Select the Weight Units Pounds Grams or Kilograms Press To save the Changes Set Date and Time Press Display will prompt for a...

Page 13: ...ow SHOT WT or LBS HR KG HR To adjust this value follow these instructions Press field LBS HR KG HR or Display will show the Per Hour Rate or Show Weight Screen showing the current setting Use the keyp...

Page 14: ...Press To stop the prime function When the MGF settings are adjusted and the MGF is primed with material it is ready for operation Press the START button run the MGF What happens during NORMAL OPERATI...

Page 15: ...mode the difference between the two weights needs to be greater than 5 times the target rate If the above condition d or e fails then a counter is incremented If the above condition d or e passes the...

Page 16: ...effect the motor step time calculation MTF Motor Factor RPM Maximum RPM SPR Steps per Revolution LDR Let Down Ratio PHR Per Hour Rate continuous and extr Follow only SHT Shot Weight cycle mode only RA...

Page 17: ...provide us about what caused the problem the more we can do to improve our product so that these problems cannot and do not occur in the future In some cases we may NOT be able to duplicate YOUR part...

Page 18: ...e 27 MTF Motor Factor grams revolution SPR Steps per Revolution RPM Maximum RPM PMR Prime Motor Rate MTL Motor Torque Limits Load Cell Constants KDF Stable Weight LCZ Load cell Zero LCL Load cell Cali...

Page 19: ...Baud Rate Set baud rate of MLAN over serial Print Center See page Error Bookmark not defined Print Totals Prints totals to USB Flash Drive Print Alarm History Prints alarm history to USB Flash Drive P...

Page 20: ...l show the System Configuration categories Press Preferences Display will show System Preferences categories Press Change Passwords Display will show two options Change Admin Password and Change Opera...

Page 21: ...g for errors Since load cell readings are ignored this flag allows operation even if the load cells become damaged Dispense times will be based entirely on the last known rate adjustment IF the meteri...

Page 22: ...DATE TIME CURRENT 08 30 18 21 00 46 LAST PRINTED 08 30 18 20 44 13 LAST CLEARED 08 30 18 20 52 52 TOTALS GRAND CYCLES 0 TOTAL 1245 grams MGF TSC ID 001 WO 00000 RECIPE 00000 OP 000 Print Alarm History...

Page 23: ...METERS NAME RAM ROM LDR 500 200 SHT 500 200 PHR 2 200 FUL 3500 3500 PRT 1 0 KDF 6 6 LCZ 583 583 MTF 136 75 XCV 2 0 XRC 40 40 XAL 5 5 XUL 200 200 XMO 1000 1000 LBE 30 30 UBE 300 300 NBW 100 100 LWA 400...

Page 24: ...olor that remains in the hopper AVG DISP 2 98 The average dispense since the last rate error correction has occurred or since the hopper was last refilled It is the accumulated weight dispensed divide...

Page 25: ...we run at a Perfect rate TARGET per cycle times CYCLE CT is compared to accumulated WEIGHT and the difference is the ERROR TOT WT The total weight dispensed since the last time this value was cleared...

Page 26: ...l prompt for a password admin default 22222 Then press Press MGF Configuration Display will show the MGF Configuration categories Press Calibration Routines Display will show 3 calibration routines Ca...

Page 27: ...et then to Default Gateway After entering the Default Gateway the display will return to Static IP When you are finished entering the network information press BACK to save settings and BACK 3 more ti...

Page 28: ...trusion Voltage Filter Loadcell Low Loadcell High High Rate Trip Point Error Count Tracking Injection Color Percent Injection Screw Time Percent LDR Let Down Ratio Percent Factory Default MGF 4 00200...

Page 29: ...ATP Adjustment Trip Point percentage Factory Default MGF 4 00005 MGF 8 00005 The fourth and fifth digits are the accumulative gram error that will force a readjustment of motor speed 5 grams default...

Page 30: ...number of sequential raw count readings before snapping to the new value 00505 5 sequential readings The right two digits yy are the difference between 2 sequential raw count readings 00505 5 raw cou...

Page 31: ...below TAT then the running motor time is halved and the target motor speed is doubled This will continue until the target rate is above TAT Example TAT 00025 0 25 g s Shot Weight 9 grams Cycle Time 8...

Page 32: ...med maguire Exit this screen and enter again to refresh the display window Highlight the version in the white panel on the left and press PROGRAM Press To proceed with the firmware update or press the...

Page 33: ...e viewed printed or reset from the Home Screen Pressing the VIEW on the Home screen will display current totals date and time cycle count and other information Pressing the Print to USB button from th...

Page 34: ...supply to the brass 45 X NPT fitting at the input side of the solenoid mounted on the control bar 7 The air supply should be set and regulated at a pressure between 60 and 80 PSI 8 Connect the feeder...

Page 35: ...M A G U I R E P R O D U C T S I N C 35 G R A V I M E T R I C A U G E R F E E D E R AGL Loader Diagram...

Page 36: ...M A G U I R E P R O D U C T S I N C 36 G R A V I M E T R I C A U G E R F E E D E R AGL Loader Solenoid Wiring Assembly...

Page 37: ...M A G U I R E P R O D U C T S I N C 37 G R A V I M E T R I C A U G E R F E E D E R...

Page 38: ...M A G U I R E P R O D U C T S I N C 38 G R A V I M E T R I C A U G E R F E E D E R...

Page 39: ...M A G U I R E P R O D U C T S I N C 39 G R A V I M E T R I C A U G E R F E E D E R MGF Wiring Diagrams...

Page 40: ...M A G U I R E P R O D U C T S I N C 40 G R A V I M E T R I C A U G E R F E E D E R...

Page 41: ...M A G U I R E P R O D U C T S I N C 41 G R A V I M E T R I C A U G E R F E E D E R...

Page 42: ...M A G U I R E P R O D U C T S I N C 42 G R A V I M E T R I C A U G E R F E E D E R Parts Diagram and Dimensions Drawing...

Page 43: ...M A G U I R E P R O D U C T S I N C 43 G R A V I M E T R I C A U G E R F E E D E R...

Page 44: ...M A G U I R E P R O D U C T S I N C 44 G R A V I M E T R I C A U G E R F E E D E R...

Page 45: ...of natural material so that color is dropped into the flow from an air space and is evenly distributed over a steady and predictable flow of natural material This assures uniform distribution of colo...

Page 46: ...ssed or implied and of all other obligations or liabilities on our part and MAGUIRE PRODUCTS neither assumes nor authorizes any other persons to assume for it any other liability in connection with th...

Page 47: ...14 Tel 610 459 4300 Fax 610 459 2700 Email info maguire com Web www maguire com Maguire Europe Tame Park Tamworth Staffordshire B775DY UK Tel 44 1827 265 850 Fax 44 1827 265 855 Email info maguire eur...

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