EB-A Series Manual - Homer City Automation
Contents
1. If lines do not remain sharp during operation and appear fuzzy the stroke gauge is improperly positioned When the gauge is properly positioned the image width and the apex of the inner lines will be at the maximum conditions observed if various positions have been tried For extremely critical stroke application Homer City Automation recommends the use of an electronic stroke measuring device for accurately measuring stroke TUNING To operate at peak efficiency each feeder must be tuned for its particular application Two factors must be taken into consideration The natural frequency of the unit and the applied frequency of the operating unit Natural frequency is the frequency of vibration observed when the power is turned off The unit will oscillate for a fraction of a second at its natural frequency with a declining amplitude until it comes to rest Natural frequency is determined by the masses and the radial location of the masses above and below the spring system and the stiffness of the spring system 11 HOMER CITY g AUTOMATION Homer City Automation Inc 57 Cooper Avenue Homer City PA 15748 Phone 724 479 4503 FAX 724 479 4767 Email info homercityautomation com Web www homercityautomation com EB A Feeders are tuned super resonant or slightly below the operating frequency Refer to Table 3 To check the tuning condition of a feeder the following steps may be taken 12. HOMER CITY g AUTOMATION Service Instructions Syntron Vibratory Parts Feeder EB A Series General Manual CONTENTS Introd ction ssia va wanda ateuncceeawes 1 Parts FloW escui bed f08 oan tad a deciavie be cautene ieee 2 Long Term Storage cee eee eee ee eee eneee eee eenes 3 InstallatiOM nccsseanescadessesodsaas oa coaeavanseneandeete cae 3 AW JOtS cca cin dsanndenenatenetetsanceescidesaane cetacdesadees 5 Operation iir orane iina a EE aE ETEA 6 Maintenance 0ccccecee cence eee ee eee eneeneenaenaes 8 Troubleshooting Guide ccececc ene ene ene enees 9 Air Gap Adjustments cceceeeeeeeeeeee en reen 10 Parts Feeder Stroke cc ccceceeeeeaeeeeeeeeeens 11 TUDNO euep ne enced EE ESE 12 Homer City Automation reserves the right to make changes at any time without notice and without any liability or other obligation on its part in materials equipment specifications and models and also to discontinue the manufacture and sale of models and the parts and components thereof For further detailed information contact Homer City Automation Asatety Instruction Product safety labels must remain highly visible on the equipment Establish a regular schedule to check visibility Should safety labels require replacement contact Homer City Automation for an additional supply free of charge INTRODUCTION The Syntron EB A Series Parts Feeder Drive when coupled with a matching
3. at 1 4 that shown in Table 2 OPERATION With the equipment properly installed in its operating location and all wiring completed the equipment is now ready for operation A Gf WARNING Before operating the feeder be sure the controller is closed and secured Before energizing the unit check all bolts for tightness Check the method of feeder support making certain that it is substantial and that the feeder is not touching any rigid objects Rotate the control knob counterclockwise to zero setting Turn the control power switch on and gradually increase the control knob setting When operating normally the feeder should perform with a smooth even stroke A CAUTION If a loud striking noise occurs immediately turn the control knob counterclockwise to zero The striking should stop If the striking continues turn the unit off immediately Striking is the result of the armature and core making contact Continued striking can result in serious damage to the unit Refer to the Air Gap section of these instructions for procedures to correct a striking condition If the feeder fails to operate satisfactorily thoroughly review the installation operation and maintenance sections of this manual For further information contact Homer City Automation Load the bowl with the parts to be conveyed Homer City Automation recommends the quantity of parts loaded in the bowl be determined so as not to interfere with the feed rate or orientation feat
4. operating conditions However the following points should be given careful consideration 1 Some materials tend to adhere to the bowl surfaces This is especially true of materials coated with grease or dust Material build up on the bowl should be removed as a daily practice Look for material build up particularly around and under hopper openings Diluted household ammonia or most common detergents are effective cleaning agents Do not use cleaners containing chloride or chemical solvents 2 All details of the feeder magnet and controller should be kept reasonably clean CAUTION A clean dry compressed air supply is recommended for general cleaning of these units The use of water may result in shorting of electrical components 3 Never oil the spring assemblies This destroys the clamping effect of the spring pads NOTE If the spring stacks are repainted do not paint between the springs 4 The controller door should always be kept closed and secured TROUBLESHOOTING HOMER CITY g AUTOMATION MALFUNCTION PROBABLE CAUSE CORRECTION Feeder operating below capacity too slow Bowl overload Low voltage Air gaps too wide Feeder in contact with rigid object Loose bowl Broken or dirty leaf springs Spring bolts not torqued sufficiently Bowl or cross arm cracked or broken Unit improperly tuned Reduce bowl load Check power supply Reduce air gaps Remove restriction Tighten bowl attachments
5. 8 032 0 81 457 8 049 1 24 120 118 054 1 37 078 1 98 117 2 97 50 49 130 3 30 039 0 99 059 1 5 100 98 066 1 68 EB 162A 15 065 1 65 24 104 2 64 60 59 108 2 74 381 032 0 81 609 6 052 1 32 120 118 054 1 37 078 1 98 125 3 17 50 49 130 3 30 039 0 99 063 1 6 100 98 066 1 68 EB 192A 18 065 1 65 60 59 124 3 15 457 8 032 0 81 verre wee 120 118 062 1 57 078 1 98 50 49 150 3 81 039 0 99 100 98 074 1 88 EB 222A 21 065 1 65 30 093 2 36 60 59 106 2 7 533 4 032 0 81 762 047 1 19 120 118 054 1 37 078 1 98 112 2 48 50 49 128 3 25 039 0 99 056 1 42 100 98 064 1 63 EB 252A 24 065 1 65 36 098 2 49 60 59 112 2 84 609 6 032 0 81 914 4 044 1 1 120 118 056 1 42 078 1 98 117 2 97 50 49 134 3 4 039 0 99 059 1 5 100 98 068 1 73 EB 322A 30 075 1 91 60 59 135 3 43 762 090 2 28 wee 50 49 162 4 11 EB 372A 36 075 1 91 60 59 148 3 75 914 4 090 2 28 wee 50 49 178 4 52 TABLE 3 PERFORMANCE CHARACTERISTICS HOMER CITY g AUTOMATION Maximum total spring stroke is given in Table 3 Exceeding these values may result in failure of the springs and spring clamping system The stroke may be measured as follows 1 Attach a stroke gauge Homer City Automation Part No A 58462 on the cross arm as shown in Figure 3 as close to the spring stack as pra
6. Apply a stroke gauge to the feeder bowl as outlined on page 7 Turn on the unit and observe the reading on the stroke gauge 3 While still observing the reading on the gauge very gradually loosed the bolt on one spring clamp Note the change on the stroke gauge as you loosen the springs The stroke gauge reading will decrease if the unit is tuned properly or 4 Rigidly clamp small weights to the bowl and observe the change on the gauge after the weights have been attached The stroke gauge reading should decrease If the feeder stroke increases as the spring clamp bolt is gradually loosened or weight is added to the bowl the feeder is tuned sub resonant or above operating frequency While feeders may operate satisfactorily when tuned several cycles above operating frequency resonance Homer City Automation recommends super resonant below operating frequency tuning to protect the drive components from damage caused by excessive feeder stroke which could occur if a spring or clamp bolt would fail or loosen If it is determined that a tuning correction is required to increase or decrease the bowl stroke refer to the separate manual supplied with each unit and proceed as follows From Super Resonant Conditions if the bowl stroke is to be increased more springs must be added and or existing springs must be replaced with thicker springs If the bowl stroke is to be decreased existing springs must be removed and or replaced with thinner s
7. Clean or replace See separate instructions for proper torque values Repair or replace as required Refer to tuning instructions in this manual Feeder operating below capacity amplitude correct but feed rate low Bowl overloaded Bowl worn out Improper air pressure at manifold if air jets are used Air flow needle valves improperly set Special orientation features if supplied are improperly adjusted A single layer of parts should be sufficient Repair or replace as required Unless otherwise noted air pressure at manifold should be 50 p s i Adjust as required Adjust as required Feeder hums will not vibrate Defective SCR or triac Wrong control CC Control set for wrong operating See controller instructions for testing Replace with correct control Set control for correct operating frequency frequency Feeder fails to operate Coil failure Replace no response Blown fuse Replace Faulty switch gear Short in electrical wiring Replace or repair Repair Replace only with parts supplied or recommended by Homer City Automation HOMER CITY g AUTOMATION AIR GAP ADJUSTMENTS The air gap of a vibratory feeder is the spacing between the armature face and the face of the magnet core assembly see Figure 1 page 2 Proper adjustment is critical for optimum feeder performance If the air gap is too close the armature and core will make contact during feed
8. ain features of this control are 1 Switchable from AC to RC Drive must have the proper magnet assemblies AC or RC installed and the spring system must be tuned accordingly See page 11 for tuning 2 Soft start 3 Adjustable current limiting During AC operation the triac passes alternating current in both the positive and negative directions producing 120 cycles per second operation An adjustable optically coupled phase control provides for linearly variable drive output When switched for RC operation an integrated circuit controls the triac so that current only flows in one direction thus producing 60 cycles per second operation See the controller instruction manual for further information The soft start feature allows the feeder to start gently eliminating overstroking which may cause striking Refer to air gap adjustment section for further explanation The adjustable current limiting feature provides two benefits HOMER CITY g AUTOMATION 1 It reduces the power consumption by matching the current of the coils with the requirements for various bowl styles and tooling variations 2 Drive tuning for a wide range of bowl inertias is simplified since the applied coil current can be adjusted to match the driven inertia Refer to page 11 for tuning Refer to this Service Manual prior to installing adjusting or performing any maintenance on the Syntron EB A Series Parts Feeders A WARNING Failur
9. ble airline Standard filtration is normally satisfactory but oil coalescing filters should be included where oil contamination cannot be tolerated Unless otherwise specified the air pressure supply at the manifold should always be set at 50 p s i Important All air jets are equipped with needle valves for controlling the flow of air In most cases the air jet position and the airflow relationship are critical for maintaining efficient orientation All air jets are factory set with air pressure regulated at 50 p s i For feeders equipped with air jets connect the air supply to the manifold per page 5 The air supply must be sized to provide sufficient flow while maintaining 50 p s i As a rule of thumb most standard 1 6 I D air jets will consume approximately 1 SFCM standard cubic foot of free air per minute No of turns Air Pressure Open On Each Jet in SCFM Needle 50 60 70 80 Valve 1 2 1 1 1 2 1 3 1 4 1 1 5 1 6 1 7 1 8 Fully Open 1 6 1 7 1 9 2 0 TABLE 2 APPROXIMATE AIR JET CONSUMPTION HOMER CITY g AUTOMATION The above flows are based on using a Pneutrol Needle Valve 1 16 1 5 mm I D Homer City Automation Part No 0255X044 4 101 6 mm long air jet and 24 609 6 mm of 1 8 3 mm I D vinyl tubing For 1 8 3 mm I D air jet consumption can be estimated at least 4 times that show in Table 2 For 1 32 1 mm I D needle jet consumption can be estimated
10. ctical 2 Attach a second gauge onto the base of the drive as close to the spring stack as practical 3 Turn the unit on and set control knob at highest setting 4 Add the stroke of the cross arm top of free length of spring to the stroke of the base bottom of free length of spring The results are maximum total spring stroke Maximum bowl stroke for O T bowls is measured on the outer wall of the bowl core assembly Maximum bowl stroke for cascade bowls is measured on the outer wall of the bowl near the discharge Higher bowl strokes than shown are permissible if bowl attachment points and bowl construction will withstand the additional stress and maximum total spring stroke is not exceeded In general higher base to bowl ratios will allow proportionally higher bowl strokes resulting in proportionally lower base strokes Should it become necessary to reduce maximum bowl stroke one or more of the following should be done 1 Adjust the max pot located on the printed circuit board and also on the Conductor Control to a lower setting by turning it counterclockwise 2 Increase the air gap on each magnet 3 Reduce the tuned natural frequency of the drive by removing one or more springs MAINTENANCE WARNING Before performing any maintenance work the electrical power supply must be disconnected at the safety disconnect switch Syntron EB A Parts Feeders require minimum preventive maintenance when installed properly and under normal
11. e to follow these service instruction procedures could result in unsatisfactory performance damage or shortened service life or personal injury PARTS FLOW The following will provide a general description of parts flow and how it is achieved by the vibrating stroke of the bowl Figure 2 illustrates the action of a part moving along the bowl surface During one vibration cycle the bowl surface travels from point A to point B and back to point A The part continues to travel on a trajectory as shown coming to rest on the bowl surface to a position further forward BOWL SURFACE NEUTRAL POSITION i a ts hi ae SURFACE BOTTOM OF STROKE ACTUAL OBJECT TRAVEL PER CYCLE FIGURE 2 MATERIAL FLOW ON BOWE SURFACE Each cycle imparts a forward and upwards flight to the part forcing it to land further along the bowl track toward the discharge For equipment operating on a 60 cycle rectified power supply this cycle of parts flow is repeated 3600 times per minute 7200 times per minute on 120 cycle operation The rate of feed is controlled by adjusting or varying the stroke of the bowl The number of strokes will remain constant with respect to the power supply but the stroke length can be varied by adjusting the control knob LONG TERM STORAGE When received the equipment should be carefully uncrated Give the equipment a thorough visual inspection to reveal any damage that may have occurred during shipment If damage i
12. ed vibration transmission into the drive support structure Although the isolators are capable of absorbing base strokes equivalent to the bowl strokes shown Homer City Automation recommends that base strokes be kept to a minimum This can be accomplished by maintaining a high base to bowl inertia ratio The stable operating characteristic of the EB A series drive is made possible in part by the large coils Current ratings shown are maximum values required for operating in the higher than normal 1 to 1 base to bowl inertia range For standard bowls power requirements are much lower Therefore for reduced power consumption and ease of tuning lighter inertia loads it is highly recommended that an adjustable current listing type control such as the Conductor Series be used The soft start and other unique features are described in the AC versus RC section of the manual on page 1 Maximum Tooled Bowl Strokes Operating Recommen Maximum Outside Track Bowl Cascade Bowl Frequency ded Max Allowable Diameter Stroke Diameter Stroke Cycles Per Tuned Total Spring Drive In mm In mm In mm In mm Second Natural Stroke Model Frequency Cycles Per In mm Second EB 112A 19 065 1 65 14 090 2 29 60 59 108 2 74 254 032 0 81 355 6 045 1 14 120 118 054 1 37 078 1 98 109 2 77 50 49 130 3 30 039 0 99 055 1 4 100 98 066 1 68 EB 132A 12 065 1 65 18 098 2 49 60 59 108 2 74 304
13. ency to slide on their mounting plates if oil or similar fluids get between them Any heat build up generated by this sliding action may result in failure of the isolators To prevent any sliding of the isolators the retainer screw in each isolator should be tightened to create a rigid connection between the isolators and their mounting plates A WARNING Do not operate the unit without first securing the rubber isolator mounting plates to the support surface The feeder must never come in contact with any rigid object or adjacent surface that could hamper the vibratory action of the feeder Any connection between the bowl and adjacent objects must be flexible The separate controller assembly should be installed as close to the feeder as possible preferably on a wall in a clean dry location free from excessive vibration Install the controller at a location where it will receive adequate ventilation This will ensure prolonged component life Refer to the controller service manual for detailed controller installation instructions A y WARNING The electrical power supply connection to the Homer City Automation s supplied controller must be made through a customer supplied safety disconnect switch which must be mounted next to the controller AIR JETS Bowls equipped with air jets for orientation or feed rate assist require a regulated dry air supply This supply system should consist of a shutoff valve an air filter regulator and flexi
14. er operation This striking condition will cause severe mechanical damage broken springs cracked bowl cross arm armature or magnet If the air gap is adjusted so that the armature and core are too far apart the unit will draw high current and result in coil burnout failure of control components or lack of bowl stroke and part feed rate The air gap is properly set at the factory The recommended air gaps are listed in the manuals containing the specifications for specific model feeders However if high voltage is applied to the feeder or if the air gap has been moved due to improper handling an adjustment may be necessary To properly adjust the air gap follow the outlined procedure below while referring to the illustration shown in the instructions for the specific model NOTE The feeder must not be operating while the air gap is being adjusted 1 Turn the power to the unit off and loosen the cap screws which secure the magnet core assembly to the base loosen just enough to relieve holding pressure 2 Adjust the magnet assembly in the required direction either closer to or farther away from the armature assembly a little at a time and equally on each side NOTE The air gap should be tapered slightly toward the center of the unit for optimum performance Field setting can be made with the magnet core and armature pole faces parallel Do not exceed the current rating 3 When adjusting the air gap never set the ga
15. imes the operating frequency of the parts feeder Any supporting structure having a natural frequency close to the operating frequency of the feeder is evidenced by excessive dynamic deflections at the points of support and can result in poor performance of the feeder These conditions can be corrected by stiffening the structure with bracing etc It is important to bolt the Syntron EB A Parts Feeder isolator mounting plates to the support structure so that the feeder discharge location is maintained Locknut Isolator May be rotated 360 with mounting plate fastened to support structure Retainer Screw Self Locking FIGURE 3 IB A ISOLATOR The discharge location may be adjusted as follows referring to Figure 3 Vertical Adjustment with the isolator mounting plate secured to the support structure loosen each isolator locknut Lift the unit slightly at each corner in succession and turn the isolator at each corner into the base to lower the discharge out of the base to raise the discharge Adjust all isolators equally to assure that the unit remains level HOMER CITY g AUTOMATION Horizontal Adjustment Loosen the screws not supplied with drive that fasten the isolator structure and slide the drive to the desired location Be certain to tighten these screws before running the feeder NOTE Because the isolators are free to rotate on their mounting plates for vertical adjustment the isolators may have a tend
16. line of the bowl If the stroke gauge is placed at the same distance from the center of the drives as the outer edge of a spring stack the graduated lines should be perpendicular to the springs As the distance from the drive center increases relative to the springs the angle of the motion line proportionately decreases and the graduated lines should be placed in a more horizontal plane As the gauge is placed closer to the drive center the angle of the motion line proportionately increases Crossam Strokes FIGURE 3 LOCATIONS OF STROKE Under vibration the two black lines on the gauge V widen As the stroke of the bowl is increased the lines widen until at some stroke the black lines appear as a double V The two black lines at the inner edge form an inner V and as the stroke is increased appears as an X The stroke is read in the black line an estimated 010 25 mm below the white apex of the inner upper V When the inner lines appear as an X the stroke should be read at the intersection of the X Variations in position and quality of the individual stroke gauge will cause errors as much as 010 25 mm but this is generally an acceptable reading A CAUTION Stroke gauge results are interpreted differently by different viewers and it is important that they be interpreted properly in critical parts orientation and feed rate applications or when maximum safe strokes are being approached
17. p so close that a striking condition results Never set the gap too far apart since an excessive current draw could result Keep the gap as close as possible without striking After the air gap is adjusted satisfactorily tighten the cap screws securing the magnet to the base Air gap specifications are noted in the separate instructions pertaining to the specific feeder model AC Feeder Current When reading the current of an AC unit with a tong meter the actual current is read directly from the meter The tong meter reading reveals the same current as stamped on the equipment nameplate RC Feeder Current When measuring the current of an RC feeder a tong meter does not reveal the same current as stamped on the equipment nameplate This is due to the wave form characteristics of the feeder operation To obtain a true current multiply the tong meter reading by 1 7 10 HOMER CITY g AUTOMATION PARTS FEEDER STROKE Feeder stroke is the distance the bowl surface travels in one complete cycle of vibration See page 2 This is measured from the forward upward limit of the vibrating stroke to the downward backward limit of the vibrating stroke The bowl stroke can be read by applying a stroke gauge Homer City Automation Part No A 58462 to the bowl as illustrated in Figure 3 For most accurate results the stroke gauge should be applied to the bowl so that graduated lines of the gauge are parallel to the motion
18. parts feeder bowl is a dynamically balanced tuned two mass vibratory parts feeder The EB Parts Feeder is build to accept parts in bulk then feed and discharge them in oriented positions Drives are furnished for either AC or RC operation in the EB 112A through the EB 252A Models and for RC operation only in the EB 322A through the EB 372A Models 2010 Homer City Automation Inc All rights reserved SM0655 082010 HOMER CITY g AUTOMATION A typical drive consists of the following A heavy base A bowl mounting cross arm Four banks of springs arranged in a circular fashion which connect the base to the cross arm Two electromagnets mounted to the base Two armatures mounted to the cross arm Either four or eight adjustable elastomer isolators mounting feet mounted to the underside of the base DN Oe GN The above combined with the bowl now becomes a two mass vibrating system where the base components form the drive mass and the upper components form the driven mass ARMATURE ASSEMBLY ADJUSTABLE ISOLATOR ELECTROMAGNET FIGURE 1 EB DRIVE UNIT COMPONENTS Power is supplied to the coils of an EB A drive unit through a separate controller Although the AC drive may be operated by a traditional triac or powerstat type control and the RC drive may be operated through an SCR Silicon Controlled Rectifier type control Homer City Automation recommends the advance model CC 1A or 2A Triac Control The m
19. prings Any spring alterations should be in small increments When changing springs a symmetrical pattern should be kept on the spring stacks if possible After each alteration to the spring arrangement the air gap should be rechecked and readjusted if required and the drive current draw should be checked Homer City Automation reserves the right to alter at any time without notice and without liability or other obligations on its part materials equipment specifications and models Homer City Automation also reserves the right to discontinue the manufacture of models parts and components thereof 12
20. s found contact Homer City Automation and the shipping carrier at once When storing the drive unit plug all openings in the control box to prevent dirt rodents and insects from entering Homer City Automation advises placing a corrosion preventive inside the control box Cover the drive unit and place in an area protected from extreme heat Do not drop the drive unit The force of the impact may damage the components HOMER CITY g AUTOMATION INSTALLATION The feeder and controller when received should be carefully uncrated All packing bands paper etc must be removed Remove shipping brackets from drive base before attempting to operate A CAUTION Homer City Automation recommends lifting the unit by the base NOTE Never make any alterations or additions to the parts feeder assembly without first contacting Homer City Automation Homer City Automation will not assume responsibility for unauthorized alterations or additions to the bowl or basic drive base When selecting a location for the feeder consideration must be given to the area of support Larger units can weigh over 600 pounds and a support must be selected that will safely carry the full weight of the unit under load conditions The operating frequency of the unit versus the natural frequency of the support structure is most important and the following points must be carefully observed The support structure must have a natural frequency of at least 1 2 t
21. ures of the bowl Usually one layer of parts is satisfactory The use of a Syntron Flow Switch is recommended when automatic bulk loading of the bowl is desired Adjust the control knob to the desired output Clockwise rotation will increase feed rate while counterclockwise rotation will decrease the feed rate Many units incorporate bowls designed with special clips rejecters wipers air jets track modifications etc for positioning and orienting parts for a specific application These devices placed along the track and bowl wall are installed to exacting measurements NOTE Any damage or mechanical change to these features may stop the flow of parts or alter their function Instructions for these special features are not included in this manual These applications are described in special instructions furnished with the particular unit The EB A series parts feeder drives are capable of driving tooled bowls at the strokes shown in Table 3 when the drive base to bowl total driven inertia WR 1 to 1 However Homer City Automation recommends drive to bowl ratios of 1 5 to 1 and higher Tooled Homer City Automation bowls will usually be in this or higher ratio range HOMER CITY AUTOMATION The 1 to 1 ratio capability provides a 33 safety margin when operating with the 1 5 to 1 ratio Higher bowl strokes will cause proportionally higher reactionary strokes of the base resulting in higher stresses in the drive isolators and increas
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