Document e7JgV40X1xm4OkJQ5jK25yma9

W' w 7 V *VS ** * ^ my' 505 *'' .. electro mechanical brakes torque ranges available from 65 to 9000 lb. ft. *. SEVEN WHEEL SIZES AVAILABLE: 8", 10", 13", 16", 19". 23" & 30" Cutler-Hammer electro mechanical, magnetic Three enclosures are available to protect the brake shoe brakes conform to NEMA-AISE standards and from severe environments: (1) Partial Wheel Cover are designed for application on movable bridges, cranes, rolling mill drives, hoists, etc. Wear and freezing are virtually non-existent on C-H brakes due to their design which eliminates all pivot pins but one (pull rod to armature). This -- which goes over the top of the wheel and ex tends over the shoes; (2) NEMA 3 Lift Off -- which covers everything but the coil and outer arma ture; and (3) NEMA 4-5 -- which is watertight and dusttight. single pin type pivot is maintained because it is doubly functional in that it also allows the pull optional manual release lever rod to be easily swung out of the way if straight- Quick acting, self resetting, this device permits up removal of the wheel is necessary. The structural members of the 8" thru 23" brakes are made of ductile iron and their bases and arma tures are made of cast steel. The 30" differs only in the base which is a steel weldment with lam inated steel armatures. simple, controlled torque release in the event of power failure. Operator merely raises the lever which cams the armatures together thus allowing controlled release of the brake holding force. There's no change in brake adjustment, no delay in resetting, and no downtime for re-adjustment. Available for 8" thru 23" bra^e sizes. SCF-EC-1037 SC-EEI-0810 r t T TTJ'ffV- -: a -V *. -y ' t a vk hydraulic brakes variable braking provides the uitimate in stopping control FIVE WHEEL SIZES AVAILABLE: 8", 10", 13". 16" & 19" Hydraulic brakes give operators complete control of speed at which load is moving -- thus increasing effi ciency and improving safety. With the Type 506 Elec tro Hydraulic Brake the electrical system holds the brake released, and the pedal-operated hydraulic sys tem enables controlled variable pressure braking for slowing and stopping functions. Type 509 is hydraulic only, depending on spring tension to hold the brake released. The hydraulic systems in both models oper ate the same as the braking system of an automobile -- the more pressure applied to the pedal, the greater the braking torque. Both systems operate over the full range of speeds. - C-H hydraulic brakes comply with NEMA-AISE stan dards. Eight out of ten parts are interchangeable with mechanical brakes to considerably reduce parts inven tory requirements for users of both mechanical and hydraulic systems. optional power assist accessory This new device enables the use of hydraulic braking power on as many as four brakes simultaneously from a single control station. What's more, control may come from any remote source such as a footswitch, pendant station or radio control transmitter. The pow er assist greatly increases braking efficiency on many applications and reduces operator fatigue. CUTLER-HAMMER INDUSTRIAL SYSTEMS DIVISION. MOwtuket. Wit. 53201 HEAVY DUT.Y MAGNETIC BRAKES 505 Electro-Mechanical 506 Electro-Hydraulic 1 T ECHNICAl ' I N FORMATION P L'WCATION 505/50* DESIGN CHARACTERISTICS GENERAL -- D-c operated shoe brakes. Short- stroke magnet and armature structure. Electrically released and spring set. 506 has added hydraulic system independent of spring-set mechanisms. STANDARDS -- AISE and NEMA ratings and dimensions. NEMA 1 mounting (base on horizon tal surface). TORQUE RATINGS - 65 lb-ft through 9,000 lb-ft. Equal stopping and holding when spring-set. Equal torque for either direction of wheel rotation. Hydraulically applied torque infinitely variable. COILS -- Series \\ or 1 hour. Shunt intermittent of continuous. Class B insulated. NEMA 3 enclosed. Leads (about 4" long) supplied with copper lugs. Revisible so that leads point toward or away from wheel. Separately supplied resistor for shunt brakes. LININGS -- Asbestos with constant coefficient of friction under .operating conditions. Pinned to brake shoes. WHEELS -- Special cast ductile iron. Standard castings for most .requirements. Tapered bore (with keyway), tolerance .005", tapers of 1.250" or 1.219" per foot on diameter. Straight bore (with keyway and setscrew), tolerance .002". Physical and metallurgical properties not affected by, excessive temperatures. CONSTRUCTION - Structural members made of ductile iron, except 30" base which is plate steel. Laminated armatures in 30", cast steel armatures in 8" through 23". INSTALLATION -- Magnet end can be to, left or right. Adjustments and settings require only 1 etescnl wrench. All adjustment points are readily accessible. OPTIONAL FEATURES COIL CIRCUIT FOR SHUNT BRAKES - Pro tective panel to obtain intermittent duty ratings on continuous duty applications. A-C rectifier panel which has coil protective circuit included for 8" through 23" brakes, A-c rectifier panel for 30" brakes but without coil protective feature. Increased or decreased release and/or set time, special voltages, etc. ENCLOSURE -- Wheel protective cover on pull rod of 505 only. NEMA 3 weather resistanl. NEMA 4-5 watertight and dusttight. WHEEL - Special offsets, bores, castings, etc. Safety flange, Vi" x Vi", on motor side, shoes retain wheel if wheel loosens or if motor shaft breaks. DUPLEX INSTALLATION, 506 ONLY - 1 brake operated from 2 master stations. 2 brakes operated from 1 or 2 master stations. MOUNTING -- NEMA 2 mounting (base on ver tical surface with magnet structure up). MANUAL OPERATION, 505 8" THROUGH 23" ONLY -- Manual self-returning variable torque lever.Screw type non self-returning release. CHNICAl ' `RMATION IBLICATION J5/506 HEAVY DUTY MAGNETIC BRAKES 505 Electro-Mechanical 506 Electro-Hydraulic 9/15/66 SCR1PTI0N J 505 and 506 brakes are electro-mechanical D-c operated >e brakes. They are elctrically released and spring set 1 are therefore fail-safe under power failure. Torque due spring-setting is fixed as adjusted. 506 brakes have ded) hydraulic linkages which permit variable torque in>ndent of spring-set torque. th brakes are identical except for the pull rod and the ;er shoe lever. SOS brakes shipped since January, 1962. i readily be converted to 506 brakes. tailed descriptions of standard and optional features of -1 505 and 506 brakes start on this page immediately er "Selection". 'ERATION en the coil is energired. the armatures move together to npress the torque spring and move the shoes away from : wheel to release the brake. De-encrgizing the coll ows the torque spring to separate the armatures and press ! shoes against the wheel to set the brake. Torque is istant during stopping and holding. _ 5 brakes operate exactly as SOS brakes with the exception it the operator can impose hydraulically actuated torque time. In normal (service) operation, the brake is : illy released constantly, and braking is hydraulic, ke is spring-set only to h.old (park) the system. a n'ydraulic system is used, options are available to oper 1 or 2 brakes from 2 masters or from 1 master. iLECTION >r most applications, the brakb torque must simply equal e lull load motor torque as reflected to the wheel. The rmula for this figure Is; 5250 x HP " RPMwheel th the torque requirement known, and the type and duly cle established, the Selection Table on page 4 will licate a suitable brake either with or wi thout optional nets. some applications it is common to use a different torque .ing for the brake. A crane trolley is an example where 507. brake is typical. A crane hoist typically employs 1257. or a 150% broke. few applications require a thorough onalysis of the broke d the system. The items which must be considered, gether with dota ond formulae, begin on poge 11. Hailed descriptions of standard and optional features C-H 505 and 506 brakes follow. I'- HDME&A STANDARDS rakes conform to AISE and NEMA standards for mill .s. These standards prescribe items such as: wheel ameters and widths, torque increments, height of wheel tnterline, mounting dimensions, votiage and current values r release and set, etc. For mill motors, these same nndards also fix wheel offsets, bores, and mounting nterlines between the motor and the brake. Dimensions id drawings of standard brakes with respect to mill motors SIZE, TYPE AND DUTY CYCLE Brakes are categorized by the factors of: 1) size, wheel diameter, 2) type, power supply to coil, and 3) duty cycle, coil tlme-on lime-off. These are summarized in the "Selec tion Table" on page 4. SIZE -See "Selection Table". TYPE - Brakes are designated as series or shunt'. Series brakes have their colls in the armature circuit of a D-c motor. Shunt brakes have their coils separately energized from a 0-c source. The separate supply may be A-c if an optional rectifier panel is used, (page 3). DUTY CYCLE -- The tlme-on time-off of a brake coil determines its duty cycle. The duty cycle definitely affects the maximum torque rating of a brake, and the following will illustrate this. Given a fixed volume for the coil, wattage dissipation limits the time the coil can be energized without over heating. This is analogous with mill motor ratings, and the duty cycle of brakes is purposely selected to coincide with mill motor standards. A coil energized for a short period can carry relatively high currents and com press a "stiff" torque spring. With this spring as a reference, the torque rating is established as the practicat maximum (or this cycle. Standards are: series V, how, ond shunt intermittent. For longer cycles, the coil can carry less current, compress a "less-stiff" spring, and brake torque must be reduced. Series l hour ratings are reduced to 65% of hour brakes, and ^hunt continuous ratings are reduced to 757. of intermittent brakes. Shunt applications which use an auxiliary protecting panel (either A-c or D-c) can have intermittent ratings for all applications tf these panels Incorporate a forcing and protecting circuit See page 3. From these considerations, standard duty cycles are listed below. 1. Series. D-c motor only. 505 only. a. 14 hour duly, or crane, duly. The coil carries 1007. of full load armature current for V3 hour without over heating. This corresponds to 1 minute on, 2 minutes off, or VJ time duty. b. 1 hour duly, or mill duty. The coil carries 1007. of full load armature current for l hour without over heating. This corresponds to 1 minute on, l minute off, or V} time duty. c. C-H and NEMA standards are that series brakes will release at 407. and set at 107. of full load armature current. 2. Shunt, D-c supply, A-c or D-c motor. a. Intermillenl, or i hour shunt. The coil and its perma nent series resistance are across 1007. of line voltage for 1 hour without overheating. b. Continuous, or 8 hour shunt. The coil and its perma nent series resistance are across 1007. of line voltage for 8 hours (considered to be continuously) without overheating. c. With optional coil protective panel. (See page 3). The coil circuit is across 1007. of tine voltage continuously . without overheating. Torque rating is the same as intermittent duty brakes. d. C-H and NEMA standards are that shunt brakes will HEAVY DUTY MAGNETIC BRAKES 505 Electro-Mechanical 506 Electro-Hydraulic 3 T ECHNICAl / I NFORMATION P UBIICATION 505/506 SIZE, TYPE AND DUTY CYCLE (Continued) 3. Shunt, A-c supply. A-c Or D-c motor, A-c rectifier panel. a. Panel for 8" through 23" brakes. See below. The optional panel for these sizes includes the protecting circuit and a rectifier. The panel and the coil cir cuit can be continuously energized at 1007. of A-c supply voltage without overheating. Torque rating is the same as for intermittent duty. b. Panel for 30" brakes. See below. This provides D-c from an A-c supply, but without the protecting feature. Therefore brakes are rated either intermittent or con tinuous. The panel and the coil circuit, at 1007. of the A-c supply voltage, can be energized without overheating, for 1 hour for intermittent duty, or continuously for continuous duty. c. C-H and NEMA standards are that brakes will operate at 857. of the A-c supply voltage. WHEELS C-H brake wheels are made of specially formulaled ductile iron. This has friction characteristics similar to cast iron, and shock and strength characteristics like steel. Because C-H wheels are not heal treated or carburized, they retain their physical and metallurgical properties at temperatures where wheels made of other materials undergo significant changes in their microstructure. C-H wheels wear evenly and smoothly in the form of fine flakes. For this reason, wheel scoring and lining erosion are significantly reduced. LININGS C-H brake linings arc made of high grade impregnated asbestos fibers. They are technically called "folded and compressed" linings. The materials used in C-H linings result In s lining which has a constant coefficient of friction under operating conditions as welt as long life. COILS ' Coils art made with Class B insulation, and they are NEMA 3 enclosed in stainless steel. Coils have 2 leads (about 4" long), and each lead is supplied with a suitable lug. Colls are reversible so that the leads can point toward or away from the wheel. MOUNTING . SOS and 506 brakes are designed for NEMA 1 mounting (base on horizontal surface). Optionally they are available for NEMA 2 mounting (base on vertical surface, magnet end up). Dimensions are the same for either mounting. - CONSTRUCTION Structural members are made of ductile Iron, except the 30" base, which is a steel weldment Armatures in 8"-23" brakes are cast steel; 30" armatures are made of laminated steel. C-H brakes have only 1 true pivot pin (pull rod to arm ature). By using hardened sockets wherever possible, wear and slicking at pivot points Is negligible. D-c PROTECTIVE PANEL, SHUNT ONLY In some continuous applications, the required torque is between the intermittent and the continuous rating for a brake. Normally, a larger brake would be selected. As an option, a protective panel which permits using the smaller brake is available. The scheme utilized is below. The panel uses a forcing circuit to release the brake and a timer and switch to insert-resistance into the coil circuit. This keeps the coil temperature in bounds, and Intermittent torque ratings are possible on continuously energized brakes. This same forcing and protecting scheme is used in A-c rectifier panels for 8"-23" brakes. _ A-C RECTIFIER PANEL, SHUNT, 8"-23" ONLY For A-c applications similar to the above, the protective pane! is enlarged to include a suitable rectifier. This allows intermittent ratings for continuous applications from an A-c source. D-c voltage is 81% of A-c voltage. A-c RECTIFIER PANEL, SHUNT, 30" ONLY This optional panel does not include the forcing/prolecting circuit. K only makes it possible to use 30" brakes from an A-c source. Separate series resistance is included, as is an integral 3 phase transformer. D-c voltage is 230 V. ECHNICAl J "1RMATION UBUCATION j05/506. HEAVY DUTY MAGNETIC BRAKES 505 Electro-Mechanical 506 Electro-Hydraulic (CLOSURES mdard brakes are open type, but they function successly in moist or dusty environments. For extreme conditions, enclosures are available. They are: Partial wheel cover. This is a partial cover over the top of the wheel and extends over the shoes. It.is mounted on the pull rod, and is not available for S06. NEMA 3. This is a lift-off enclosure which covers everything but the coil and the outer armature. The centerline height of the wheel is unaffected, and the shaft cut-out is included. NEMA. 4-5 watertight and dusttlght. This Is a splitcase gasketed enclosure without cutouts. The height of the wheel centerline is increased. As an option, a shaft hole, gasket or shaft seal and retainer can be provided. Holes, bolt holes, and gaskets for mounting directly to other machinery are not available. MANUAL RELEASE, 505 ONLY, 8B-23*' ONLY. Two mechanisms are available. They are: 1. A cam-action lever which is self-returning to the set position. Due to the cam action, a set brake can be released and re-set as desired. 2. A screw-type release, non-self returning. This is a wrench-operated release and must be released and re-set with a wrench. BRAKE ADJUSTMENT In any application, torque should be adjusted for best performance rather than maximum. The permissible range of adjustment is: ALL series brakes: 100% to 50% of V, HOUR RATING. ALL shunt brakes: 100% to 507. of INTERMITTENT. The importance of proper installation and adjustments cannot be overemphaslred. Check the nameplate on the brake for the 1007. torque setting. :LECTI0N TABLE, 505 AND 506 BRAKES RATED TORQUE, Lb-Ft Sprg. (spring set) or Hyd. (hydraulically sel) D-c ' A-c Brake Sue Series (505 Only) Shunt 515, 230 or 550 Y. !6 Hour Of Crane 1 Hour Of Mill Intermittent or l Hour Shunt Continuous or 8 Hour Shunt Continuous with Coil P roteetive Ponel Shunt Continuous with A-c Rectifier Ponel WR2 Wheel of. RPM, Wheel Max. WEIGHTS, Lb. Wheel Only Brake and Wheel Sprg. 8" 100 10" 200 13" 550 16" 1,000 19" 2,000 23" 05 only 4,000 30" 05 only 9,000 Sprg. Sprg. or Hyd. Sprg. Hyd. Sprg. or Hyd. Sprg. or Hyd. Lb x Ft2 RPM Ship. Net Ship. Het 65 100 75 100 too 100 u 5,000 18 12 178 150 130 200 150 200 200 200 3 4,000 35 25 263 240 365 550 400 550 550 550 12 3,180 75 59 510 465 650 1,000 750 1,000 1,000 1,-000 36 2,500 120 102 700 645 1,300 2,000 1,500 2,000 2,000 2,000 70 2,110 185 160 1,220 1,150 2.600 4,000 3,000 - 4,000 4,000 210 1,740 315 290 1,830 1,735 6,000 9,000 6,750 - 9,000 9,000 ini. 6,750 coni. 880 1,340 1,180 1,100 4,100 3,920 Actual hydraulically applied toique is dependent only on force on pedal. See page 6. 208-240/1/60 or 440-480/1/60 for 8"-23". Same voltages except 3 phase for 30". 9/15 '66 HEAVY DUTY MAGNETIC BRAKES. 505 Elecfro-Mechanical 506 Electro-Hydraulic POWER FOR SHUNT BRAKES Broke Sire 8" 10" 13" 16" 19" 23" D-c Operated 1)5, 230, or 550 V Intermittent Continuous Seporote 0 Permonenl Series Resistance Power, 5cporote0 P ermonent Scries Rests tonce Power, Quart. Type KW. Quon. Type KW. i H .44 i H .26 i H .50 i H .28 iH .66 i H .43 iH .82 i H .49 i H 1.24 i H .60 2 H 1.92 i H .79 30" 1 WS 4.50 WS 2.95 Resistance data foi 230 V. Refer to C-H for othet voltages. From A-c Rectifier Ponel, 208-240 V. 60 Cycle or 440-480 V. 60 Cycle Separate Permanent Series Resistance Power, KVA. Inrush Seoled <t> -' 'Int. 1 - WS Box Coni. 2 - WS Box 1.75 1.85 2.60 2.82 3.22 4.17 3.5 .25 .25 .26 .26 .41 .51 3.5 1 1 1 1 1 1 5 T ECHNICAl ' I HFORMATION P UBUCATION 505/506 From D-c Protective Panel Q> e teo X 5 O o V 5 X SHUNT BRAKES, MAXIMUM SPEEDS OF OPERATION Bra kc Size STANDARD Intermittent or Continuous Portiol Voltage Coil ond Seporote Resistance OPTIONAL Intermittent Duty Coil Protective Panel or A-c Rectifier Panel RELEASE, Sec. SET, Sec. RELEASE, See. SET, Sec. 8" 2S .25 .22 .15 10" .30 .30 .25 .20 13" .35 .40 .30 .22 16" .45 .45 .40 .25 19" .50 .50 .45 .30 23" .55 .55 .50 .32 30" .55 .10 .55 .10 Use of either on all but A-c operated 30" brake allows intermittent duly fating on continuously energized coil circuits. The A-c opeiated 30' ` brake is rated either 6,750 Ib-ft continuous or 9,000 Ib-ft Intermittent. STANDARD WHEEL CASTINGS Dimensions, Inches AB C Mox. D Max. Min, E Min. Mox. 8 3V, 3 4 4 24 24 3 4 2*4 w1---- j CV 10 3V. 3V, 4V, 3*4 3V 4 Min. Bore T opered Straight ii Max. Bore WR2 Lb x Ft* 2 1.1 Weight Lb. Ship Wet 18 12 i i2 3 35 25 \----1 4V, 5V. 34 13 s*/. 4*4 4V, 3*4 6 34 2 4*4 44 i i 3*4 12 75 4V, 41/. 44 3*4 24 IX "V, 6V, 54 3*4 5*4 64 4V, 4 16 64 5 5 7*4 34 5 54 5V 3V, 3 24 3*4 36 3*4 120 5 44 2*4 3*4 19 8V, 5 54 7V, 5V. 8 6V, 7*4 3V, 3 44 70 185 23 m 6 84 5% 8*4 9V* 4*4 4 5 210 315 30 14`/, 9V, 12*4 10V, 104 10V, 54 5 7 880 1,180 Standard castings have hub dimensions of C Max., 0 Max., and E Min. Refer to C-H lor wheels from special castings. 59 102 160 290 1,100