INTORQ BFK471-25 Translation Of The Original Operating Instructions Download Page 1

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setting the standard

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INTORQ BFK471-25

Electromagnetically Released Spring-Applied Brake

Translation of the Original Operating Instructions

Summary of Contents for BFK471-25

Page 1: ...www intorq com setting the standard www intorq com INTORQ BFK471 25 Electromagnetically Released Spring Applied Brake Translation of the Original Operating Instructions...

Page 2: ...TORQ BA 14 0200 02 2016 2 This documentation applies to the Product key Not coded Supply voltage hub bore hole options INTORQ B FK Product group Brakes Product type Spring applied brake Type 471 Size...

Page 3: ...est version of these operating instructions Packaging label Manufacturer Bar code Type see product key Type number Designation Release voltage holding voltage Rated torque Quantity per box Release pow...

Page 4: ...oning data electrical data 16 3 5 Switching times 16 3 6 Switching energy switching frequency 18 3 7 Emissions 19 4 Mechanical installation 20 4 1 Important notes 20 4 2 Assembly 22 5 Electrical insta...

Page 5: ...e in a complete and perfectly readable condition 1 2 Terminology used 1 3 Conventions in use This document uses the following styles to distinguish between different types of information Term In the f...

Page 6: ...ty of heat energy QE J Max permissible friction energy for one time switching thermal parameter of the brake QR J Braking energy friction energy QSmax J Max permissible friction energy for cyclic swit...

Page 7: ...from the start of torque rise until reaching the braking torque tue s Over excitation time U V Voltage UH V DC Holding voltage after voltage change over UL V DC Release voltage before voltage change o...

Page 8: ...ake consists of different types of material Recycle the metal and plastic parts Ensure professional disposal of assembled circuit boards according to the applicable environmental reg ulations DANGER D...

Page 9: ...lly 1 9 Legal regulations Liability The information data and notes in these Operating Instructions met the state of the art at the time of printing Claims referring to drive systems which have already...

Page 10: ...product characteristics Only qualified skilled personnel are permitted to work on and with INTORQ components According to IEC 60364 or CENELEC HD 384 qualified skilled personnel are persons who are f...

Page 11: ...considered improper Usage conditions for the INTORQ spring applied brake No explosive or aggressive atmosphere Humidity no restrictions Ambient temperature Standard design 20 C to 40 C At high humidit...

Page 12: ...is reduced to 110 W NOTICE Due to the structural design of the stator the air gap cannot be installed downstream When the wear limit is reached in the case of the single rotor design the rotor must b...

Page 13: ...gn The brak ing torque is generated by several pressure springs with friction locking The braking circuits are released electromagnetically 3 1 2 Brakes During the braking procedure the pressure sprin...

Page 14: ...que is common in particular after long downtimes in humid environments where temperatures vary If the brake is used as a pure holding brake without dynamic load the friction lining must be reactivated...

Page 15: ...min max Design mm mm mm mm with one rotor 0 5 1 5 19 1 20 0 double rotor 0 8 19 7 19 7 Tab 3 Air gap rotor thickness monitor using the feeler gauge through the check hole Type BFK471 25 Outer diameter...

Page 16: ...e g with hoists and lifts the spark suppressor can also be connected in parallel to the brake coil Circuit proposals 29 The engagement times are approx 10 times longer with AC switching Connection 29...

Page 17: ...ng times of the spring applied brakes Type BFK471 25 Rated torque Max perm friction energy Transitional switching frequency Switching times ms 1 at sLN and 0 7 IN Mdyn QE Shue Engaging DC side1 Diseng...

Page 18: ...set switching frequency Sh the permissible amount of heat is QSmax With high speeds of rotation and switching energy the wear increases strongly because very high temper atures occur at the friction s...

Page 19: ...y into heat the surface temperature varies considerably depending on the operating conditions and possible heat dissipation Un der unfavourable conditions the surface temperature can reach 130 C Noise...

Page 20: ...The form and position tolerances apply only to the materials mentioned Contact INTORQ if you are us ing other materials The brake flange must be supported by the end shield across the full surface Des...

Page 21: ...02 2016 21 4 1 2 Necessary tools Tab 9 Required tools Tab 10 Required measuring instruments Type Torque wrench Measuring range Nm Bit for hexagon socket screws Wrench width mm BFK471 25 20 100 8x squa...

Page 22: ...haft Fig 5 Installing the hub onto the shaft 1 Insert keyway 4 1 into the shaft 2 Press the hub 4 onto the shaft 3 Secure the hub against axial displacement for example by using a circlip 4 2 NOTICE T...

Page 23: ...ease The chamfer at the flange must be directed towards the motor end shield Align through holes of the flange 6 with the fixing holes in the end shield 15 and tighten to the flange using the fixing s...

Page 24: ...2 Screw the complete stator 1 onto the end shield 15 using the screw set supplied 10 Tightening torque 15 use a torque wrench 1 Stator complete 6 Flange 12 Complete manual release 3 Complete rotor 10...

Page 25: ...onto the shaft Observe flange position relating to the recesses for the manual release The chamfer at the flange must be directed towards the motor end shield Align through holes of the flange 6 with...

Page 26: ...016 26 Assembly of the rotor Fig 11 Mounting of double rotor design 3 Push the rotor 3 onto the hub 4 and check whether it can be moved by hand Fig 12 Mounting the stator double rotor version 3 Comple...

Page 27: ...nd shield 15 using the screw set supplied 10 Tightening torque 15 use a torque wrench 1 Stator complete 6 Complete flange 12 Complete manual release 3 Complete rotor 10 Socket head cap screw with seal...

Page 28: ...hing see DC switching fast engagement circuit diagram 30 is limited by an integrated overvoltage pro tection at terminals 5 and 6 DANGER There is a risk of injury by electrical shock The electrical co...

Page 29: ...ching delayed engagement Fig 14 Bridge half wave rectifier in parallel to the motor extremely delayed engagement Rectifier type Supply voltage Coil voltage UL release UH holding V AC V DC BEG 561 255...

Page 30: ...Electrical installation INTORQ BA 14 0200 02 2016 30 DC switching fast engagement Fig 15 Bridge half wave rectifier with DC side switching fast engagement...

Page 31: ...Spark suppressor Design PNP N O contact Operating voltage 10 to 30 V No load current 10 mA Output current Max 200 mA Short circuit behaviour Short circuit protection Temperature range 25 to 125 C Pro...

Page 32: ...essor Design PNP N O contact Operating voltage 10 to 30 V No load current 10 mA Output current Max 150 mA Short circuit behaviour Short circuit protection Temperature range 25 to 70 C Protection class...

Page 33: ...ning tolerances Increased breakaway torque is common in particular after long downtimes in humid environments where temperatures vary If the brake is used as a pure holding brake without dynamic load...

Page 34: ...with the voltage indicated on the nameplate A deviation of 10 is per missible If the measured value deviates 47 7 Open the switching contact for the brake The brake is applied 8 Switch off DC voltage...

Page 35: ...gap must be zero and the rotor must rotate freely 8 Start the proximity switch 9 Check the technical specifications for the proximity switch When using an operating voltage between 10 30 volts the no...

Page 36: ...t the bridge half wave rectifier is used in this configuration 7 Check the air gap sL The air gap must be zero and the rotor must rotate freely 8 Start the proximity switch 9 Check the technical speci...

Page 37: ...rotor must move without residual torque Measure the DC voltage at the brake The release voltage is applied for about 1 3 sec The system is then reduced to the holding voltage refer to the nameplate I...

Page 38: ...uencing factors should be added together when the amount of wear is calculated Component Cause Effect Influencing factors Friction lining Braking during operation Wear of friction lining Friction work...

Page 39: ...t Failures production losses or damage to the system may occur when the brakes are not serviced Therefore a maintenance strategy that is adapted to the particular operating conditions and brake loads...

Page 40: ...Observe the following for inspections and maintenance works Brakes with defective armature plates socket head cap screws springs or counter friction faces must always be replaced completely Remove im...

Page 41: ...hing replace the flange 6 Assemble the brake 22 7 Connect the supply cable 8 Recommission the brake 30 NOTICE Use new INTORQ screw sets when re mounting the brake NOTICE For the double rotor brake the...

Page 42: ...e 1 Disconnect the connection cable 2 Loosen the socket head cap screws 10 and remove them 3 Detach stator 1 from the shaft 4 Detach rotor 3 from the hub 5 Loosen fixing screws 21 and remove them 6 Re...

Page 43: ...Complete Flange component 6 from the shaft 7 3 4 Release voltage 1 Observe the brake functionality while the drive is operating The armature plate must be tightened and the rotor must move without res...

Page 44: ...ingle rotor design B Double rotor design Item Designation Variant 1 Stator complete Voltage characteristic torque 3 Complete rotor 4 Hub Bore diameter 6 Flange Flange incl rotor component Single rotor...

Page 45: ...crew the locking bolt 35 2 into the clip 12 11 and secure it by means of the lock nut 22 3 Setting approx 1 2 mm above magnet housing 4 Operate the manual release Engage the locking bolt 35 2 into the...

Page 46: ...omplete stator if short circuit to ground is detected Check brake voltage see defective rectifier voltage too low Wiring defective or incorrect Check and correct Check cable for continuity using a mul...

Page 47: ...taken apart Measured value Cause Remedy Voltage too high Brake voltage does not match the rectifier Adjust rectifier and brake voltage to each other Voltage too low Brake voltage does not match the re...

Page 48: ...Notes INTORQ BA 14 0200 02 2016 48 Notes...

Page 49: ...Ltd 600 6 B No 600 Xin Yuan Nan Road Building No 6 Zone B Nicheng town Pudong 201306 Shanghai China 86 21 20363 810 86 21 20363 805 info cn intorq com INTORQ US Inc USA 300 Lake Ridge Drive SE Smyrna...

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INTORQ BFK471-25, Translation Of The Original Operating Instructions

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