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Summary of Contents for Milltronics MMI-2
- Page 1 MMI-2 2 IDLER BELT SCALE Instruction Manual PL-327 January 2001 33453270 Rev. 2.3...
- Page 2 We welcome all suggestions for improvement. Technical data subject to change. MILLTRONICS®is a registered trademark of Siemens Milltronics Process Instruments Inc. Contact SMPI Technical Publications at the following address: Technical Publications Siemens Milltronics Process Instruments Inc.
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Page 3: Table Of Contents
TABLE OF CONTENTS Title Page ABOUT THIS MANUAL ABOUT THE MMI-2 SPECIFICATIONS OPERATION INSTALLATION Preamble Welding Load Cell Handling Installation Procedure CALIBRATION General Test Load Zero Span Material Test Re-Rating MAINTENANCE AND SPARE PARTS IDLER MOUNTING Troughed Idler with Channel Spine... -
Page 4: About This Manual
As the MMI-2 belt scale is used in conjunction with an integrator and optional speed sensor, the instruction manuals covering these components must be read as well. -
Page 5: Specifications
SPECIFICATIONS » ± 0.25% of totalization over 5 to 1 operating range Accuracy: in factory approved installations Belt Width: » 18" to 96" in CEMA sizes » 500 to 2000 mm in metric sizes » refer to Outline and Dimensions Belt Speed: »... -
Page 6: Operation
OPERATION Each MSI weighbridge is designed to react to the vertical component of the force being applied to it. Each MSI consists essentially of a static assembly and a weighing assembly. The static assembly is used to mount each MSI between the conveyor stringers and supports the weighing assembly via its load cells. -
Page 7: Installation
INSTALLATION PREAMBLE The MMI-2 is shipped from the factory, attached to a frame for protection. Each MSI weighbridge must be removed from its shipping frame and inspected for physical damage. Insure that the conveyor design meets the installation requirements for the Milltronics MMI-2 scale. The conveyor stringers must be rigid, straight, parallel to and square with the belt line in the area of the scale installation. -
Page 8: Installation Procedure
INSTALLATION PROCEDURE Remove the conveyor idlers currently at the desired points of installation. Remove the foot plates and modify the idler frame at both ends of the idlers as shown . customer’s idler 12.7 mm (0.5") 100 mm (4") before after Insert the MSI’s in the place of the removed idlers. - Page 9 Position the individual MSI’s such that they are centered and square to the stringer. Mount the modified idlers such that they are centered onto the scale using the idler clips. Tighten all mounting hardware. Refer to Idler Mounting for alternate idler mounting arrangements. Orient the scale so that the large arrow on the scale mounting brackets is pointing in the direction of material flow.
- Page 10 The idlers in the weighing area must be properly aligned and leveled by shimming the scale idler (S#), the two approach (A#) and the two retreat idlers (R#) until they are within ± 0.8 mm (1/32") of each other. Be sure to check that the idlers are centered and squared to the conveyor during the shimming process. Center of idlers to be in line...
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Page 11: Calibration
CALIBRATION GENERAL After the MMI-2 has been properly installed, calibration of the weighing system must be done in conjunction with the integrator. Refer to the integrator instruction manual for programming and calibration. The calibration is initially done using the supplied test load. Material tests are recommended to achieve maximum accuracy. -
Page 12: Material Test
RE-RATING Any significant change in rate, speed and /or idler spacing from original design specifications should be referred to your local Milltronics office to insure that proper design parameters are maintained. MAINTENANCE AND SPARE PARTS Each weighbridge should be kept clean. Accumulations of material between the weighing assembly and static assembly as well as around each load cell can be detrimental to the weighing accuracy. -
Page 13: Idler Mounting
IDLER MOUNTING The MSI is usually installed in conveyors employing conventional rigid structure idlers. Within this type of idler, construction will vary depending on the manufacture and the application. The idler depicted in the Installation Procedure uses an angle iron spine. The following depicts alternate idler construction and tips on how they should be modified and installed. -
Page 14: Troughed Idler With Pipe Spine
TROUGHED IDLER WITH PIPE SPINE customer’s idler 12.7 mm (0.5") 100 mm foot pads welded (4") to idler spine before after idler modification customer bolts (4 places) idler clip idler installation PL-327... -
Page 15: Flat Idler
FLAT IDLER in most applications standard conveyor manufacturers’ brackets cannot be used, replacement brackets (as shown) are needed customer’s idler 12.7mm (0.5") before after idler modification customer bolts (4 places) idler clip idler installation PL-327... -
Page 16: Msi Wiring
MMI-2 WIRING load cell ‘A’ (‘C’) load cell ‘B’ (‘D’) MSI #2 DETAIL ‘A’ belt travel see detail ‘A’ load cell ‘A’ load cell ‘B’ MSI #1 conduit and connector belt travel MSI #2 load cell load cell load cell... -
Page 17: Outline Dimensions-Cema
OUTLINE DIMENSIONS - CEMA ‘D’ ‘C’ ‘A’ 178 mm (7") ‘B’ conveyor mounting scale minimum drop-in ‘C’ ‘D’ weight belt width width ‘A’ width ‘B’ 18 " 27 " 24.5 " 9.5 " 5.5 " 82 lb 20 " 29 " 26.5 "... -
Page 18: Outline Dimensions-Metric
TLINE DIMENSIONS - METRIC ‘D’ ‘C’ ‘A’ 178 mm (7") ‘B’ conveyor mounting scale minimum drop-in ‘C’ ‘D’ weight belt width width ‘A’ width ‘B’ 37 kg 40 kg 1040 44 kg 1090 1027 48 kg 1000 1240 1177 52 kg 1000 1290 1227... - Page 19 Siemens Milltronics Process Instruments Inc. 2001 Subject to change without prior notice Siemens Milltronics Process Instruments Inc. *7ML19981dr01* 1954 Technology Drive, P .O. Box 4225 Peterborough, ON.Canada K9J 7B1 Tel: (705) 745-2431 Fax: (705) 741-0466 Printed in Canada www.milltronics.com...
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