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Holding electromagnets VEM ; ERM ; VM ; VM/ND ; ERMI ; BP series

Revision: 1/2015 Technical explanation: Holding electromagnets

Every product made by NAFSA fulfils the European Directive about electrical appliances and certain voltage limits. Made according to the following norms: DIN VDE 0580, UNE-EN 60204-1 y NFC79300

Holding electromagnets TYPES Electropermanent holding electromagnets with incorporated magnet: The attraction and holding of the ferromagnetic material is made by permanent magnets incorporated in the product. It has not got any plunger, its magnetic circuit is opened. Apart from the permanent magnets there is a coil mounted in, when this is fed, cancels part of the magnet field of the magnets allowing to loose the piece. When the coil feeding stops, the product recovers its initial force. Electromagnetic holding electromagnets: The attraction and holding of the ferromagnetic material is made when the coil is turned on. It has not got any plunger, its magnetic circuit is open. When the coil is turned off, the piece drops.

BASIC CONCEPTS Ferromagnetism: Remanence (Br): It is the magnetic property of the materials with mr>>1 It is the force the electromagnet uses to hold the permeability. ferromagnetic piece after cancelling the magnetic Magnetic poles: (North =N) (South =S). field. Its approximate value is 5% of Fm depending Attraction faces: where the ferromagnetic materials on the piece (size, roughness, material,etc..) are held, and the points where the magnetic flux (F) goes in and out. Polarity inversion: To cancell the remanent magnetism of the attraction Holding force (Fm): face in electromagnetic holding electromagnets after The force perpendicular to the attraction faces needed cutting voltage feeding, a reversal of polarity with to hold the attracted piece. limited duration and intensity is needed. It is shown in the specification sheets and it refers to the whole contact face. Standard power demand(Pn): It is what each holding electromagnets demands. Shift force (FL): It is the parallel force needed to loose the attracted Hot rate: piece. Holding electromagnet temperature rising over Depending on the finish of the attracted piece, the determined room temperature due to power absortion force (FL) may vary between 20% and 35% of the under voltage. If nothing against is indicated, holding force (Fm). temperature for reference will be 35ºC .

Air gap (dL): Material isulation class: It is the medium distance between the attraction face Correspondence between coil insulation and a of the holding electromagnets and the ferromagnetic temperature limitation of the material used for coils piece surface. manufactured. Normally, B thermal class isulation The shape and the roughness of these two surfaces (130ºC) is used. and the non-magnetic materials between them, such as galvanic protection,dust, etc... determine its value. Maximun performance room temperature: 55ºC. Standard Voltage(Un): It is the value for which the holding electromagnet Protectión types: coil has been made. This products have protection against corrosion using galvanic treatments. UNE-EN 12329 Norm. Duty-cycle (ED%): Protection against intrusion of solid object dust, It is the value obtained dividing the connection time accidental contact and water.. CEI-IEC 60529 (IP and the total cycle duration expressed in %. Standard code) Norm. holding electromagnets are prepared for a ED100% duty-cycle.

To obtain the duty-cycle (ED%): Time on x100 = Time on ED% = Time on + Time off A cycle duration

Revision: 11/2015/2012 1.4

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] Technical explanation : Holding Electromagnets.

Figure 1 Fm Line of induction

Attraction face Piece to hold FL

d L dN - S Magnetic poles N S N N S N L Air gap Fm Holding force FL Lateral motive force D Optimun thickness of the F piece to hold Magnetic flux

Magnetic circuit opened Magnetic circuit closed by the piece to hold

F: Magnetic flux The material of the piece to hold: These electromagnets generate on the surface of Material used in electromagnets manufacturing where the piece to hold a magnetic field between North and the magnetic field takes place, is made of soft iron, South poles. with high magnetic permeability. When the piece to hold is near the magnetic circuit Internal structure and composition vary depending is closed so the magnetic flux increases. on the different materials. Carbon impurities, chrome, The number of force lines per cm2 that crosses nickel, manganese, molybdenum, copper, plumb, perpendicular to the surface is the flux density as etc... reduce the magnetic conductivity. well called magnetic induction B. The tempered pieces present a further reduction of the holding force, the harder tempered is, the worse Piece to hold and contact surface: conductivity will be. Contact surface between the electromagnet and the piece to hold is the attraction face, and the surface of this piece is the one which is in contact with holding electromagnet attraction face. Holding force on the attraction surface is constant. The piece to hold determines the maximum holding Imantation curve of several materials. force value (Fm). It depends on the size and thickness of its contact surface. FigureFigura 22 Armco Telar 57 St37 For a field intensity H determined by a magnet or a St60 CastAcero steel colado coil, the induction that can be reached depends on MalleableFundición maleablesmelting 20MnCr5 the material type to handle. B=f(H). See figure 2. CastHierro iron colado

In the same electromagnet the holding forces may 2 vary due to the magnetic properties of the material to hold. Among other things, saturation induction of the material determines the maximun holding force.

Magnetic field and field lines behaviour depending 1 on the thickness of the piece to hold. B (Tesla)

0 0 50 H (AV/cm) 100 150

H= magnetic field intensity (AV/cm) B= induction (Teslas) Piece thickness 0,2mm Piece thickness 10mm

Revision: 11/2015/2012 1.5

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] Holding Electromagnets

Description: The holding electromagnets (electromagnetic and electropermanent) are used to attract and hold ferromagnetic pieces. The maximum force efficiency is achieved with the piece to be hold above the attraction's face and in direct contact with both poles (outside pole and inside pole). ATTRACTION FASTENING FACE

Exterior pole Central pole Flying leads Threaded hole to electromagnet fixation

Coil

Carcase

It is not recommended use holding electromagnet in applications that an air gap>0.2mm is required. The retention force will fall down exponentially when the air gap increases (as can be seen in the data sheet of each product).

Conditions for a correct instalation, use and maintenance:

Holding electromagnets Movement piece fixation

It is convenient to leave a tiny gap Piece to hold: between the electromagnet To obtain the maximum fixing and its fastening performance, the surface face so that the product must be the same as or can move and adapt bigger than the attraction to the piece to hold face of the holding electromagnets d L Air gap Allowance

In electropermanent holding electromagnets, vibration and temperature higher than the one recommended must be avoided because it could damage the magnet and the product would loose force.

Maintenance: If the attraction face suffers bumps when working, a reduction of force will occur due to the extraordinary air gap generated, and to recover the initial force, attraction face must be rectified

Revision: 11/2015/2012 12.0

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] Round holding electromagnets

VEM SERIE

The attraction and holding of the magnetic pieces are obtained feeding the winding inside the solenoid. When the power supply stops the electromagnet looses the piece. When working with loads security norms must be respected.

Protection rate: IP65 Insulation class: B (130ºC) Standard voltage: 24 VDC Standard duty cycle: ED100% Table 1 Other voltages,ED and sizes: Consult TYPE øA (-0,3) B C±0.1 D E F Weight(Kg) VEM 20 20 M-3 12 5 ------0.02 Flying leads for every size. VEM 25 25 M-4 20 6 --- 40 0.06 Supply possibilities under demand: VEM 30 30 M-4 22 6 --- 45 0.10 .With campling screw from the VEM25 VEM 40 40 M-5 26 8 --- 55 0.20 .With connector from the VEM65. VEM 50 50 M-5 30 8 --- 65 0.30 The connector (1) has 4 possibilities of direction (4x90º) VEM 65 65 M-8 35 12 112 80 0.80 and it is possible to be incorporated to the same diodes VEM 80 80 M-8 38 12 127 95 1.30 of rectification for alterning current connection (AC). VEM 100 100 M-10 43 15 147 115 2.10 VEM 150 150 M-16 56 24 197 165 6.40 Flying leads: Ref: VEM (type)-V - ED% Table 2 d Example: VEM 65-24Vdc- ED100% Air gap (mm) L TYPE P at 20ºC e (mm) (W) 0 0,1 0,2 0,5 1 1 14,5 3,8 1,6 0,3 VEM20 1,6 3 27 5,7 2,6 0,35 1 27 19 12 3 VEM25 3,2 3 114 47 20 3,5 6 135 50 21 3,7 1 37 24 18 6 1,5 VEM30 4 3 170 80 40 9,5 1,6 6 190 90 45 12 2 1 38 30 24 13 4 VEM40 5,6 3 300 203 133 27 4,5 Connector (C): Ref: VEM (type)/C-V-ED% 6 400 245 160 30 5 Example: VEM65/C-24Vdc ED100% Connection: 1 40 32 30 20 15 see documentation that is enclosed with the material VEM50 6,5 3 320 235 185 65 16 6 500 370 240 68 20 1 45 40 35 25 15 3 310 290 250 148 40 VEM65 10 6 830 660 500 164 46 10 980 750 560 190 50 1 65 42 40 30 20 3 430 360 325 230 90 Magnetic Force Fm (N) VEM80 15 6 1150 970 830 375 110 10 2000 1350 1000 420 125 1 70 50 45 35 25 3 530 440 426 335 225 VEM100 20 6 1400 1200 1050 730 310 10 2600 2200 1700 880 330 3 700 580 550 480 390 6 1810 1650 1580 1400 1100 NAFSA, reserves the right to any modifications VEM150 40 Clamping screw (B): Ref: VEM(type)/B-V-ED% 10 5800 4350 3910 3000 1850 Example: VEM50/B-24Vdc-ED100% 18 7104 5760 4992 3840 2400 e (mm): Thickness of the piece to hold

The table 2 gives for each type of holding magnet, the values of the force of maintenance (Fm) based on the air gap, measured in the following conditions: -Direct current supply. -Flat piece (3µ m rugosity) in AºSt37, thickness as shown in the table 2 and dimensions are similar or bigger than the attraction face. -Room temperature 35ºC. -Coil working on its regime temperature. At different conditions, the magnetic force(Fm) may decrease.The value of the magnetic remanence after the power supply stops is 5% of the holding force. .Earthing is recommended if the metallic parts are accessible. .Technical explanation: see documents 1.4 & 1.5 Important: the clamping screw does not .Under demand: any size, voltage, duty cycle etc can be manufactured. have to exceed measure D

When lifting or handling heavy loads a minimun security margin of 3 must be respected, the weight of the load cannot exceed 33% of the magnetic force. Revision: 11/2015/2012 12.1

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] e= Thicknessofthepiecetohold Table 1 Table 2 ic. hn okn wt las scrt nrs ut e respected. be must norms security loads, with working When piece. winding inside the solenoid. When the power supply stop the feeding by obtained are pieces magnetic the of holding and attraction The Rectangular holdingelectromagnets Electroimanes deaccionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +3494 45310 61-Fax: +3494 62501 51 -E-mail: [email protected] ERM500/60 ERM200/60 ERM150/60 ERM600/35 ERM500/35 ERM400/35 ERM200/35 TYPE ERM150/35 ERM100/35 ERM SERIE Other voltages, EDandsizes:Consult Standard dutycycle:ED100% Nominal V Insulation class:B(130ºC) Protection rate:IP65 ERM500/60 ERM200/60 ERM150/60 ERM600/35 ERM500/35 ERM400/35 ERM200/35 ERM150/35 ERM100/35 TYPE of theloadcannot exceed33%ofthe magnetic force When lifting or handlingheavyloadsaminimumsecuritymargin of3mustberespected,theweight olt

3 age: 24VDC (W) P at20ºC A 3 0014.±. 0101 - PG-11 2 M-8 12 120 40 49.5±0.2 60±0.1 530 230 180 625 525 2 5033±. 55 2M68 M-6 12 50 25 34±0.1 35±0.3 425 225 175 125 75 40 25 53 45 30 18 14 10 FH E D C B e (mm) 042 7510 3 117 330 1501 2745 4423 10 112119 035 93 60 45 60 304 263 210 1297 962 91 537 2371 1722 1460 131 3810 3060 2100 172 10 6 3 1 075 9042 40910 190 850 2410 780 310 2380 1800 4820 4650 397 2320 5950 1 5870 2630 440 7450 155 7250 3150 40 553 120 80 10 165 66 6 3 66 400 346 1 266 205 36 1 1806 56 1286 90 706 3120 60 1 234 2266 140 2053 173 1 5026 100 674 4053 2653 1 2100 226 10 1806 150 6 3540 3 2323 1 210 6 3 1 026 3017 0 300 250 280 900 680 884 180 210 200 1870 1800 890 445 650 2300 610 2160 990 1250 600 1100 2760 2550 1500 1130 1490 680 10 6 1900 1800 3 780 10 6 3 18 04 814 20 27 28 94 121 14 21 17 42 260 460 1 21 90 6 18 82 12 1 8 720 60 810 490 30 368 60 220 8 52 1758 45 1400 904 928 657 80 580 238 50 190 10 12 120 6 1450 1090 3 468 769 320 1 65 308 22 10 6 752 604 3 396 1 32 10 6 3 1 , , , 1 0,5 0,2 0,1 0 108 12 Airgap (mm) 0 550 75 102 9 3 46 136 690 Revision: 1/20121/2015 1 42570 295 14 0120 70 070 40 s, 16 16 the solenoid looses the 72 35 12 12 10 10 10

. Magnetic force Fm (N) To otherconfigurations see document12.3 Example: Ref.:ERM150/3524Vdc100% can bemanufactured - Underdemand:anysize,voltage, dutycycleetc 1.5 - Technical explanations: to see documents 1.4 and to see11.3 - Mounting, supply possibilities and ordering code: accessible. force. after thepowersupplystops is5%oftheholding decrease.The valueofthemagneticremanence At different conditions, the magnetic force(Fm) may -Coil workingonits regimetemperature. -Room temperature35ºC. bigger thantheattractionface. shown in the table 2 and dimensions are similar or Size; V Ordering code: - Only forsizesERM150/60toERM500/60. connection(AC): - current Alternating -Flat -Direct currentsupply on the air gap, measured in the following conditions: the values of the force of maintenance (Fm) based The table 2 gives for each type of holding magnet, Earthing Nº ofholesCompresionglandWeight(kg) piece (3µ m rugosity) in AºSt37, thickness as olt age; Dutycycle 12 10 is recommended if the metallic parts are 4 2 4 3 2 . PG-9

7.8 2.3 4.5 3.5 2.8 1.5 0.9 3 1 12.2

NAFSA, reserves the right to any modifications Mounting and supply possibilities for rectangular holding electromagnet

ERM --/35 Supply possibilities 2x180º connector

A)Connector B)Stuffing box Standard mounting Opcional mounting (Standard) (under demand) under demand

Connector and stuffing box different positions

1)Standard mounting 2)Face opposite to standard mounting 3)Fastening face (Under demand) (Under demand) ERM --/60 Supply possibilities 4x90º connector

A)Connector B)Stuffing box (Standard) (Under demand) Optional mounting under demand

Connector and stuffing box different positions

1)Standard mounting 2)Face opposite to standard 3)Longitudinal output 4)Fastening face mounting (Under demand) (Under demand) (Under demand)

Ordering code: Size; Supply possibilities; Positioning; Voltage; Duty-cycle; Example: ERM200/35 A2 24Vdc 100% (Connector in the opposite face to standard mounting) ERM200/60 B4 24Vdc 50% (Stuffing box in the mooring face)

IMPORTANT: Under demand orders can be delayed in the delivery Revision: 11/2015/2012 12.3

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] respected. be must norms security loads, suspended with working force.When initial its coil allowstoloosetheload,whenthispowersupplystops, theproductrecovers the on supply power failure.The supply power sudden to due down falling load mounted in the electromagnet, with these kind of product of kind these with electromagnet, the in mounted magnetspermanent by made are pieces magnetic of holding and attraction The Round electropermanentholdingelectromagnets Electroimanes deaccionamiento NAFSA S.L.-(www.nafsa.es) -Tfno: +3494 45310 61-Fax: +3494625 0151 -E-mail: [email protected] Example: VM50/B-24Vdc-ED100% Clamping screw(B):Ref:VM(type)/B-V-ED% see document Connection: Example: Connector (C):Ref:VM(type)/C-V-ED% Example: VM50-24Vdc-ED100% Flying leads:Ref:VM(type)-V-ED% The .With connectorfromtheVM65. of rectificationforalterningcurrentconnection(AC). and it is possible to be incorporated to the same diodes Different voltage, EDorsize:Consult Standard dutycycle:ED100% exceed measureD Important: .With camplingscrewfromthe VM25 Supply possibilitiesunderdemand: Flying leadsforeverysize S Insulation class:B(130ºC) Protection rate:IP65 VM SERIE t andard voltage: 24VDC connector (1) has 4 possibilities of direction (4x90º) oftheloadcannot exceed33%ofthe magneticforce. When lifting orhandling heavy loadsaminimumsecuritymarginof3must berespected,theweight VM65/C-24Vdc ED100% the clamping screw does not have to ation thatisenclosedwiththematerial Revision: 1/20121/2015 s TP øA TYPE VM25 VM20 VM30 VM150 VM40 VM100 VM50 VM80 VM65 Table 2 Table 1 -Flat -Holding magnetwithoutvoltage. conditions: following the in measured gap, air the on based (Fm) maintenance of force the of values the magnet, holding of type tableeach The for gives 2 .Under demand: any size, voltage, duty cycle etc can be manufactured. be can etc cycle duty voltage, size, any demand: .Under accessible. are parts .Technical metallic explanation:seedocuments 1.4&1.5 the if recommended is .Earthing holding force. the of 5% is stops supply power the after remanence magnetic the of value decrease.The may force(Fm) magnetic the conditions, different At face. attraction -Coil workingonits regimetemperature. the than bigger -Room temperature35ºC. or similar are dimensions we avoid the risk of risk the avoid we TYPE VM150 45 VM100 25 VM80 18 VM65 VM50 VM40 VM30 VM25 VM20 piece (3µ m rugosity) in AºSt37, thickness as shown in the table 2 and 14 10 (W) P at20ºC 4.5 4.3 2.6 7 5 -66 5 9 15 6.60 165 197 15 65 M-16 150 0 -05 0 4 15 2.20 115 147 10 50 M-10 100 (-0,3) 5M42 - 0 0.06 0.04 40 ------5 5 27 25 M-4 M-3 25 20 0M42 - 5 0.17 45 --- 5 28 M-4 30 0M53 - 5 0.24 55 --- 6 30 M-5 40 0M53 - 5 0.44 65 --- 6 35 M-5 50 0M84 2 9 1.42 0.74 95 80 127 112 8 8 45 40 M-8 M-8 80 65 piece to hold (mm) Thickness ofthe C01DEFWeight(Kg) C±0.1 B 1 3 10 1 3 10 1 3 10 1 3 10 1 3 10 1 3 10 1 3 10 1 3 1 10 3 10 0075519 745 1000 0010 1300 1500 2000 0 729 57 108 2 837 58 128 2 1 129 2 2 80 125 226 6 0 140 203 266 7 3 145 238 374 9 6 217 267 294 8 6 256 362 588 9 8 262 282 299 1 5 320 350 415 851 5 18 851 5 18 851 5 18 073 7 20 374 7 23 91 7 10 29 41 5 10 24 51 6 10 45 21 7 14 52 92 22 29 39 33 28 30 43 43 25 35 44 43 25 35 44 53 25 35 45 37 60 75 93 . 0.2 0.1 0 Air gap(mm)dL 10 75

12.4 Magnetic Force Fm (N)

NAFSA, reserves the right to any modifications Round electropermanent holding electromagnets

VM/ND SERIE

The attraction and holding of the magnetic pieces are made by permanent magnets mounted in the solenoid. With these kind of products, we avoid the risk of load falling due to sudden power supply failure. The power supply on the coil allows to loose the load, when this power supply stops, the product recovers its initial force. When working with suspended loads, security norms must be respected.

Protection rate: IP65 Insulation class: Y (90ºC) Table 1 Standard voltage: 24VDC Standard duty cycle: See chart TYPE øA (-0,3) B C(±0,1) D E Weight(Kg) Different voltage, ED or size: Consult VM 20/ND 20 M-3 25 5 26 0.04 VM 30/ND 30 M-4 32.5 6 35.2 0.13 Supply possibilities: VM 40/ND 40 M-5 41.7 6 42.7 0.28 Flying leads for every size: VM 50/ND 50 M-5 42.8 6 52.5 0.45 VM20/ND, VM30/ND, VM40/ND: 1x0.25mm2 VM50/ND, VM65/ND, VM100/ND: 1x0.5mm2 VM 65/ND 65 M-8 45.5 8 67 0.74 VM150/ND: 2x0.75mm2 VM 100/ND 100 M-10 67 10 102 3.00 Under demand: any size, voltage, duty cycle etc can be manufactured VM 150/ND 150 M-16 65 15 152 7.10 Table 2 Flying leads Minimum Resting P ED Entrehierro E Air gap (mm) (mm) ddLL pulse time TYPE (W) (%) (ms) (ms) (mm) 0 0,2 0,5 1 22 7 1,7 VM20/ND 10 20 24 180 3 39 7 1,7 10 39 7 1,7 1 46 34 22 VM30/ND 25 20 110 825 3 181 74 22 10 181 74 22 1 51 36 23 VM40/ND 42 15 75 743 3 205 89 38 10 270 89 38 1 60 41 34 VM50/ND 48 15 120 1188 3 304 200 95 10 607 225 110 1 70 50 40 Feeding mode to take off the workpiece: VM65/ND 80 15 225 2228 3 374 340 260 Voltage: 24Vdc 10 1220 750 400

Polarization: 1 83 61 49 Magnetic force Fm (N) Red lead +VDC / Black lead -VDC VM100/ND 75 25 150 1500 3 421 365 338 10 2205 1254 686

Important: the clamping screw does not 285 1070 1 78 46 32 VM150/ND 77 40 3 615 475 401 have to exceed measure D 10 2254 1490 1100 The table 2 gives for each type of holding magnet, the values of the minimum pulse time and resting time measured in the following conditions: - With a weight of 5% of the maximum magnetic force made by each model -Coil working on its regime temperature. reserves the right to any modification NAFSA The table 2 gives for each type of holding magnet, the values of the force of maintenance (Fm) based on the air gap, measured in the following conditions: -Holding magnet without voltage. -Flat piece (3µ m rugosity) in AºSt37, thickness as shown in the table 2 and dimensions are similar or bigger than the attraction face. -Room temperature 35ºC. -Coil working on its regime temperature. At different conditions, the magnetic force(Fm) may decrease. The value of the magnetic remanence after the power supply stops is 5% of the holding force. .Earthing is recommended if the metallic parts are accessible. .Technical explanation: see documents 1.4 & 1.5 .Under demand: any size, voltage, duty cycle etc can be manufactured.

Under demand an internal protection can be added to the coil to protect it of the overheating, generated by the no respecting of the times given by the duty cycles, this overheating can demagnetize the internal magnet or destroy the coil changing the proper working of holding magnet. When lifting or handling heavy loads a minimum security margin of 3 must be respected, the weight of the load cannot exceed 33% of the magnetic force. Ordering code : VM--/ND --V ED---% Example 1: VM50/ND ; Standard voltage : 24Vdc ; Duty cycle : ED15% ; Ref.: VM50/ND 24Vdc ED15% Example 2: VM50/ND with protection ; Standard voltage : 24Vdc ; Duty cycle : ED15% ; Ref.: VM50/ND_WP 24Vdc ED15% Revision: 11/2015/2012 12.5

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] Rectangular electropermanent holding electromagnets

ERMI200/60

Protection rate: IP65 Insulation class: Y (90ºC) Standard voltage: 24VDC Standard power: 250W Standard duty-cycle: ED15% Solenoid weight: 4.7 kg

Supply possibilities: - Connector standard - Alternating current connection (AC): The connector offers the possibility of incorporating rectifying diodes - Under demand: other possibilities of input can be manufactured. If any changes from the original (see drawing), please contact.

- Electric connection of the connector: see documentation that is enclosed with the material

- Earthing is recommended if the metallic parts are accessible.

- Technical explanations: see documents 1.4 & 1.5 Table 1 d Thickness of the Air gap (mm) L piece to hold(mm) 0 0.1 0.2 0.3 0.4 0.5 1 1 250 210 190 180 165 160 140 3 1350 1250 1150 1100 1000 925 570 6 2350 2000 1750 1400 1200 1100 590 10 2800 2450 2150 1900 1600 1400 700

18 3000 2550 2300 2000 1700 1500 800 Magnetic Force Fm (N)

For these holding electromagnet correct working the minimum pulse and resting time must be respected:

- Minimum pulse time: 300ms reserves the right to any modification NAFSA - Minimum resting time: 5000ms The values of the minimum pulse time and resting time measured in the following conditions: - Coil working on its regime temperature. - Piece weight: 2 kilos (it is not recommended to use these holding electromagnet for lower weights)

The table 2 gives for each type of holding magnet, the values of the force of maintenance (Fm) based on the air gap, measured in the following conditions: -Holding electromagnet without voltage. -Flat piece (3µ m rugosity) in AºSt37, thickness as shown in the table 2 and dimensions are similar or bigger than the attraction face. -Room temperature 35ºC. -Coil working on its regime temperature. At different conditions, the magnetic force(Fm) may decrease.The value of the magnetic remanence after the power supply stops is 5% of the holding force.

When lifting or handling heavy loads a minimum security margin of 3 must Ordering code: be respected, the weight of the load cannot exceed 33% of the magnetic force. Ref.: ERMI200/60 24Vdc ED15% Revision: 11/2015/2012 12.6

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected] Holding electromagnet

BP1000/100 TYPE

It is a bipolar holding electromagnet whith1000mm of effective surface. The face is made with an angle to work with different pieces between ø120 mm y ø250 mm. The attraction and holding of the magnetic pieces is obtained by feeding the coil inside the electromagnet. When the power supply stops the electromagnet looses the piece. When working with loads security norms must be respected.

Protection rate: IP65 Insulation class: B (130ºC) Standard voltage: 24Vdc Standard duty cycle ED: 100% Abs. power at 20ºC: 217 W D Temperature rise " V31" 40ºC Solenoid weight: 47 Kg

Maximum keeping force

ø Round bar Force N/mm Force N 1)To feed in alterning current the (mm) (for bar => 1000mm) electromagnet will have an external rectifier. ø120-ø200 5.4 5400 2)It can be manufactured at any voltage, duty cycle, connection etc. Also other ø250 8 8000 sizes for different applications.

The forces values are obtained with the electromagnet at its working 3)Ground connection is recommended if temperature and with the piece to be held in contact with whole to the metallic parts are accessible. attraction surface General dimensions NAFSA reserves the right to any modification NAFSA

When lifting or handling heavy loads a minimum security margin of 3 must be respected, the weight of the load cannot exceed 33% of the magnetic force.

Ordering code: BP1000/100 --V ED---% Example: Standard voltage:24Vdc Duty-cycle: ED100%: BP1000/100 24Vdc ED100%

Revision: 11/2015/2012 NAFSA 12.7

Electroimanes de accionamiento NAFSA S.L. -(www.nafsa.es) -Tfno: +34 94 453 10 61-Fax: +34 94 625 01 51 -E-mail: [email protected]