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Installing/Mounting 

 

5.7 Positioning the chain 

Milltronics Test Chain 
Operating Instructions, 10/2021, A5E32310082-AB 

17

 

5.7

 

Positioning the chain 

Chain position is critical to accurate scale calibration. To ensure proper position, please 

account for the following: 

 

The pitch should be evenly divisible into the conveyer idler spacing. 

 

Rollers should straddle the idlers. 

 

Chain placement must be repeatable. Make sure that the chain extends a minimum two 

rollers before and after the weighing mechanism. 

 

The use of appropriate chain restraints will help control longitudinal stability and is critical to 

ensure proper and safe usage. Restraints should do the following: 

 

Be attached to the chain at one end and fixed to posts mounted to each side of the 

conveyer at about one belt width from the end of the chain. 

 

Form a "V" shape when viewed from above. 

 

Cross over and clear the belt edges by approximately one to two inches (2.5 to 5.0 cm). 

 

Tension in the restraints should: 

 

Prevent chain movement along the belt 

 

Not lift the ends of the chain 

 

 

Note 

Turnbuckles are recommended to permit adequate adjustment of tension to ensure the chain 

is fully extended and each roller is turning freely. 

 

Содержание milltronics

Страница 1: ...illtronics Test Chain Operating Instructions 10 2021 A5E32310082 AB Introduction 1 Safety notes 2 Description 3 Planning Configuring 4 Installing Mounting 5 Commissioning 6 Service and maintenance 7 Technical specifications 8 Product documentation and support A ...

Страница 2: ...ated only by personnel qualified for the specific task in accordance with the relevant documentation in particular its warning notices and safety instructions Qualified personnel are those who based on their training and experience are capable of identifying risks and avoiding potential hazards when working with these products systems Proper use of Siemens products Note the following WARNING Sieme...

Страница 3: ...ssembly 8 5 Installing Mounting 9 5 1 Installation guidelines 9 5 2 Installation procedure 9 5 3 Test chain design 10 5 4 Chain reel 11 5 5 Standard motorized test chain storage reel 13 5 6 Connection of motor 15 5 7 Positioning the chain 17 6 Commissioning 19 7 Service and maintenance 21 7 1 Test chain 21 7 2 Storage reel 21 8 Technical specifications 22 8 1 Test chain 22 8 2 Storage reel 23 A Pr...

Страница 4: ... weighing http www siemens com weighing Note For industrial use only This product is intended for use in industrial areas Operation of this equipment in a residential area may cause interference to several frequency based communications Follow these operating instructions for quick trouble free installation and maximum accuracy and reliability of your weighing system We always welcome suggestions ...

Страница 5: ...uires proper transport storage positioning and assembly as well as careful operation and maintenance Only qualified personnel should install or operate this instrument Note Alterations to the product including opening or improper repairs of the product are not permitted If this requirement is not observed the CE and UKCA marks and the manufacturer s warranty will expire ...

Страница 6: ...re to deflect in much the same manner as when material is present A much greater test load can be applied to high capacity belt scales and weighfeeders because most weighbridge designs can only accommodate a limited number of static weights applied to the suspension The high capacity test load is especially important on systems using mechanical weighing elements and lever systems because they cali...

Страница 7: ...kg m 67 05 lb ft Using the nominal kg m value of 100 the next larger chain is selected from the chart of available test chains The value selected is equivalent to 104 kg m 70 lb ft Test Chain design size is based at 62 5 belt loading The length is based on the idler spacing The test chain should extend no less than two fixed idlers beyond each end of the scale mounted idlers Nominal chain length o...

Страница 8: ...chain assembly Test chains can be shipped in sections based on the length ordered These sections allow for easier handling of the chain To connect or dis assemble sections of the chain remove the pins from the roll shafts The shaft can then be removed and links of chain can be connected or removed for installation or storage ...

Страница 9: ...e power source is available All wiring must be done in conjunction with approved conduit boxes and fittings and done to procedure in accordance with all governing regulations A 30 foot 9 14 m length of stainless steel wire rope is supplied with clips One end of the cable is attached to the test chain shackle The other end is attached to the spool piece of the reel around the shaft 5 2 Installation...

Страница 10: ...hed test chain Test chain shackle Shaft length Test chain roller Roller diameter Test chain link Roller pin Washer Roller shaft Chain length to center line of last roller Pitch Double roller bushed test chain Test chain shackle Shaft length Test chain roller Roller diameter Test chain link Roller pin Washer Roller shaft Chain length to center line of last roller Pitch ...

Страница 11: ...ds the head or discharge end of conveyor On a level conveyor locate the reel prior to the scale position Facilitate chain rollout over the scale by jogging the belt until the chain is in position Mount the reel to the conveyor about 4 to 4 5 idler spaces from the scale center line This places the support legs of the reel about 1 5 spaces from the end of the test chain for easy attachment to the re...

Страница 12: ...ompartment disc diameter is determined by the following Chain length pitch and roll diameter Wire rope and chain wrap around the reel drum Chain wrap around the successive wraps of chain The number of rolls in a given wrap increase with each revolution of the reel The number of wraps the reel disc holds depends on the given chain parameters as few as one to two wraps to as many as nine wraps Overa...

Страница 13: ... A D dimension to center line of belt scale To suit reel Ø B View A Gusset by customer E Eyebolt for chain restraint Belt travel direction reel Ø B E 36 91 5 cm 20 5 52 cm 13 25 34 cm 42 107 cm 23 5 60 cm 13 25 34 cm 48 122 cm 26 5 67 cm 13 25 34 cm 60 152 cm 32 5 83 cm 17 75 45 cm Reels may have from one to two chain compartments widths vary according to the width of the specific test chain ...

Страница 14: ... Conveyer stringer 10 25 4 cm X 20Lb ft or kg m equiv support channel C width per order Structural angle frame Connecting bracket by customer Note Motor starters push button stations and support legs from the reel to the conveyer frame are not supplied with the storage reel Vertical support legs from the reel frame to the conveyer are to be supplied by others Provision is made for direct attachmen...

Страница 15: ...e speed dual voltage with pre connected D C brake 230 460 V AC Fast stopping option Brake coil 105 V DC Standard stopping Brake coil 105 V DC Thermal sensors if installed Single speed dual voltage with pre connected D C brake 190 380 V AC Fast stopping option Brake coil 103 V DC Standard stopping Brake coil 103 V DC Thermal sensors if installed ...

Страница 16: ...f motor Milltronics Test Chain 16 Operating Instructions 10 2021 A5E32310082 AB Single speed with pre connected D C brake 575 V AC Fast stopping option Brake coil 250 V DC Standard stopping Brake coil 250 V DC Thermal sensors if installed ...

Страница 17: ...mechanism The use of appropriate chain restraints will help control longitudinal stability and is critical to ensure proper and safe usage Restraints should do the following Be attached to the chain at one end and fixed to posts mounted to each side of the conveyer at about one belt width from the end of the chain Form a V shape when viewed from above Cross over and clear the belt edges by approxi...

Страница 18: ...tions 10 2021 A5E32310082 AB 3 X 3 7 5 X 7 5 cm mill angle Heavy duty hook Eye bolt Eye bolt Chain Equal length cable Heavy duty hook Belt width 3 X 3 7 5 X 7 5 cm mill angle 1 5 38 mm Eye bolt Idler spacing Turnbuckle 5 x idler spacing Chain Belt width cable Load binder pulley Load binder ...

Страница 19: ...e of the weigh suspension This is often referred to as the A2 approach idlers to R2 retreat idlers Refer to Positioning the chain Page 17 2 Secure both ends of the test chain using wire rope cables attached to the eye bolts of the frame on the storage reel and at opposite end The test chain should lay flat on the center roll of each idler with the links of the chain in a horizontal position to the...

Страница 20: ...e cable attached to the shackle During raising ensure the chain shackle is free to move and does not bind onto any portion of the storage reel Once completely retrieved secure the free end of the chain using the wire rope NOTICE Remove power to gear motor Disable the gear motor by removing power from the unit This prevents unauthorized or accidental release of the chain during normal belt operatio...

Страница 21: ... the test chain Annual verification of the chain should be made against a known certified platform with scale and length to precision measurements Recalculate with the following measurements Test chain mass without shackles _____________________ lb or kg Length stretched referenced from center of first roll to center of last roll _____________________ ft or m Roller Pitch from technical data _____...

Страница 22: ...terial Chain rollers Oiled bronze bushings Side plates C1018 and C1020 cold rolled steel Pins C1018 and C1020 cold rolled steel End shackles C1018 and C1020 cold rolled steel Fitted with eye links for attachment of wire rope Fixed to brass plate bearing the calibrated weight in lb ft or kg m Rollers C1010 hot rolled steel Roll bars Cotter pins 304 stainless steel Connection links Retained by stain...

Страница 23: ...ng as the rotating drum Solid cold rolled drive shaft Welded to drum assembly for attachment to gear motor and pillow blocks for mounting to main support frame Curved slide plate Welded to a cross member to prevent chain snagging at the cross member Approvals CE UKCA RCM a Depending on the chain length b This is used to insert the wire rope and fittings needed to attach the test chain to the reel ...

Страница 24: ...ML5 view on your PC You can also find manuals with the Mobile app at Industry Online Support https support industry siemens com cs ww en sc 2067 Download the app to your mobile device and scan the device QR code Product documentation by serial number Using the PIA Life Cycle Portal you can access the serial number specific product information including technical specifications spare parts calibrat...

Страница 25: ...cal Support http www siemens com automation csi service Service support on the Internet In addition to our technical support Siemens offers comprehensive online services at Service Support http www siemens com automation serviceandsupport Contact If you have further questions about the device contact your local Siemens representative at Personal Contact http www automation siemens com partner To f...

Страница 26: ...C Catalog catalog sheets 24 Certificates 24 Customer Support Refer to Technical support D Downloads 24 H Hotline Refer to Support request M Manuals 24 S Service 25 Service and support Internet 25 Support 25 Support request 25 T Technical support 25 partner 25 personal contact 25 ...

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