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Summary of Contents for INTORQ BFK471-25
- Page 1 INTORQ BFK471-25 Electromagnetically Released Spring-Applied Brake Translation of the Original Operating Instructions www.intorq.com www.intorq.com...
- Page 2 This documentation applies to the: Product key INTORQ Product group: Brakes Product type Spring-applied brake Type: 471 Size: 25 Not coded: Supply voltage, hub bore hole, options INTORQ | BA 14.0200 | 02/2016...
- Page 3 Release power/holding power Hub diameter Type number Rated torque Date of manufacture Document history Material number Version Description 33002383 02/2016 SC First edition Refer to www.intorq.de for the latest version of these operating instructions. INTORQ | BA 14.0200 | 02/2016...
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Page 4: Table Of Contents
Function checks before commissioning ......................34 Brake with proximity switch .........................35 Commissioning ............................37 During operation ............................37 Maintenance and repair ............................38 Wear of spring-applied brakes ........................38 Inspections ..............................39 Maintenance ..............................40 Spare-parts list ............................44 Accessories ..............................45 Troubleshooting and fault elimination .......................46 INTORQ | BA 14.0200 | 02/2016... -
Page 5: Preface And General Information
Reference to another page with additional Symbols information For example: 16 = refer to page 16 Wildcard Wildcard for options, selections For example: BFK458- = BFK458-10 Note Important notice about ensuring smooth operations or other key information. INTORQ | BA 14.0200 | 02/2016... -
Page 6: Abbreviations Used
Engagement time, sum of the delay time and braking torque - rise time Disengagement time, time from switching the stator until reaching 0.1 M Slipping time, operation time of the brake (according to t ) until standstill INTORQ | BA 14.0200 | 02/2016... -
Page 7: Safety Instructions And Notices
Characterizes the type and severity of danger Note Describes the danger Possible consequences ❚ List of possible consequences if the safety instructions are disregarded Protective measure ❚ List of protective measures to avoid the danger INTORQ | BA 14.0200 | 02/2016... -
Page 8: Scope Of Delivery
INTORQ does not accept any liability for deficiencies claimed subsequently. ❚ Claim visible transport damage immediately to the deliverer. ❚ Claim visible deficiencies or incomplete deliveries immediately to INTORQ GmbH & Co. KG. Disposal The spring-applied brake consists of different types of material. ❚... -
Page 9: Drive Systems
Manufacturer: INTORQ GmbH & Co. KG, Wülmser Weg 5, D-31855 Aerzen, Germany ❚ The spring-applied INTORQ brake is also delivered in single modules which can then be put together by the customer according to their requirements. The specifications – particularly the packaging label, nameplate and type code –... -
Page 10: Safety Instructions
❚ 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 familiar with the installation, mounting, commissioning, and operation of the product. -
Page 11: Application As Directed
... must only be operated under the ambient conditions prescribed in these Operating Instructions..must not be operated beyond their corresponding power limits. Any other use or excessive usage is considered improper! Usage conditions for the INTORQ spring-applied brake ❚ No explosive or aggressive atmosphere. -
Page 12: Technical Specifications
- in the case of the double-rotor design, the "Flange complete" unit and the rotor must be replaced. Single-rotor design Fig. 1 Design of the BFK471-25 spring-applied brake, single-rotor design Check hole, air gap with plug screw Stator, complete 12 Manual release... - Page 13 Technical specifications Double-rotor design Fig. 2 Design of the BFK471-25 spring-applied brake, double-rotor design Check hole, air gap with plug screw Stator, complete 12 Manual release Armature plate Flange 33 Hollow shaft end cover Complete rotor 10 Six socket head cap screws, DIN EN ISO 4762...
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Page 14: Transporting The Brake
These brakes come standard with threaded holes for attaching eye bolts according to DIN 580. The locations of the threaded holes are shown in the following illustration. The eye bolts are not included. Positioning Threaded hold, standard eye bolt M10, DIN 580 Tab. 1: Positioning of the eye bolt INTORQ | BA 14.0200 | 02/2016... -
Page 15: Rated Data
❚ If the required thread depth is not maintained, the fixing screws may run onto the root. This has the effect that the required pre-load force is no longer established – the brake is no longer securely fastened! INTORQ | BA 14.0200 | 02/2016... -
Page 16: Rated Data (Dimensioning Data) Electrical Data
[V DC] ± 5% [] BFK471-25 96.5 2.14 1.07 294.6 1.22 0.61 Tab. 5: Coil powers of the BFK471-25 Type Rated torque M at 100 rpm Reduction of rated torque M to X [%] BFK471-25 [Nm] 1500 rpm 1800 rpm... - Page 17 Operating/switching times of the spring-applied brakes Engagement time Reaction delay of engagement Disengagement time (up to M = 0.1 M Rise time of the braking torque Braking torque at a constant speed of rotation Voltage INTORQ | BA 14.0200 | 02/2016...
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Page 18: Switching Energy / Switching Frequency
", the permissible amount of heat is "Q ". Smax With high speeds of rotation and switching energy, the wear increases strongly, because very high temper- atures occur at the friction surfaces for a short time. INTORQ | BA 14.0200 | 02/2016... -
Page 19: Emissions
The user must ensure compliance with EMC Directive 2014/30/EU using appropriate controls and switching devices. If an INTORQ rectifier is used for the DC switching of the spring-applied brake: If the switching frequency exceeds five switching operations per minute, the use of a mains filter is required. -
Page 20: Mechanical Installation
The diameter of the shaft shoulder must not be greater than the tooth root diameter of the hub. ❚ The form and position tolerances apply only to the materials mentioned. Contact INTORQ if you are us- ing other materials. ❚... - Page 21 Type Torque wrench Bit for hexagon socket screws Wrench width [mm] Measuring range [Nm] BFK471-25 20 - 100 8x½" square Tab. 9: Required tools Multi-meter Calliper gauge Feeler gauge Tab. 10: Required measuring instruments INTORQ | BA 14.0200 | 02/2016...
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Page 22: Assembly
2. Press the hub (4) onto the shaft. 3. Secure the hub against axial displacement (for example, by using a circlip (4.2)). NOTICE For reverse operations, we recommend also glueing the hub to the shaft. INTORQ | BA 14.0200 | 02/2016... - Page 23 15 - use a torque wrench! Assembly of the rotor Fig. 7 Mounting the single-rotor version Rotor Flange 15 End shield 3. Push the rotor (3) onto the hub (4) and check whether it can be moved by hand. INTORQ | BA 14.0200 | 02/2016...
- Page 24 15 - use a torque wrench! NOTICE In order to ensure that there are no leaks, be sure to use the screw set with seals (included in the delivery)! New seals must always be used! INTORQ | BA 14.0200 | 02/2016...
- Page 25 Align through holes of the flange (6) with the fixing holes in the end shield (15) and tighten to the flange using the fixing screws (21). Tightening torque 15 - use a torque wrench! INTORQ | BA 14.0200 | 02/2016...
- Page 26 Mounting of double-rotor design Complete rotor Complete flange 15 End shield 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) INTORQ | BA 14.0200 | 02/2016...
- Page 27 15 - use a torque wrench! NOTICE In order to ensure that there are no leaks, be sure to use the screw set with seals (included in the delivery)! New seals must always be used! INTORQ | BA 14.0200 | 02/2016...
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Page 28: Electrical Installation
The bridge-half-wave rectifiers are used to supply electromagnetic DC spring-applied brakes which are ap- proved for the use with such rectifiers. Other use is only permitted with the approval of INTORQ. Once a set over-excitation time has elapsed, the bridge-half-wave rectifiers switch over from bridge rectifi- cation to half-wave rectification. -
Page 29: Electrical Connection
Otherwise, the rectifier and the brake may be damaged if there is a mains phase loss. AC switching, delayed engagement Fig. 14 Bridge-half-wave rectifier in parallel to the motor, extremely delayed engagement INTORQ | BA 14.0200 | 02/2016... - Page 30 Electrical installation DC switching - fast engagement Fig. 15 Bridge-half-wave rectifier with DC-side switching, fast engagement INTORQ | BA 14.0200 | 02/2016...
- Page 31 Ø 3.3 mm / L = 2 m, 3 x 0.14 mm² Brown (BN) Black (BK) Signal when vented armature plate (brake energized) Blue (BU) Tab. 12: Technical data for inductive proximity switches (release check) INTORQ | BA 14.0200 | 02/2016...
- Page 32 Ø 2 mm / L = 2 m, 3 x 0,073 mm² Brown (BN) Black (BK) Signal is continuously active until the wear limit is reached. Blue (BU) Tab. 13: Technical data for inductive proximity switches (check for wear) INTORQ | BA 14.0200 | 02/2016...
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Page 33: Commissioning And Operation
❚ If the brake is used as a pure holding brake without dynamic load, the friction lining must be reactivated regularly. INTORQ | BA 14.0200 | 02/2016... -
Page 34: Function Checks Before Commissioning
10. If necessary, remove the neutral conductor again from the neutral point (step 2). The preparations for commissioning are completed. If faults or malfunctions occur, refer to the error search table ( 46). If the fault cannot be fixed or elimi- nated, please contact your customer service. INTORQ | BA 14.0200 | 02/2016... -
Page 35: Brake With Proximity Switch
A signal must be present at the proximity switch only when the brake is released (the switching con- tact is closed). If the brake is not released (switching contact is open), there should not be a signal at the proximity switch! 12. Switch off DC voltage for the brake. INTORQ | BA 14.0200 | 02/2016... - Page 36 As long as the wear limit has not been reached, there must be a signal at the proximity switch, re- gardless of whether the switching contact is opened or closed. If the wear limit is reached, no signal may be present at the proximity switch! 12. Switch off DC voltage for the brake. INTORQ | BA 14.0200 | 02/2016...
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Page 37: Commissioning
The release voltage is applied for about 1.3 sec. The system is then reduced to the holding voltage (refer to the nameplate). ❚ If faults or malfunctions occur, refer to the error search table ( 46). If the fault cannot be fixed or elim- inated, please contact your customer service. INTORQ | BA 14.0200 | 02/2016... -
Page 38: Maintenance And Repair
Maintenance and repair Wear of spring-applied brakes INTORQ spring-applied brakes are wear-resistant and designed for long maintenance intervals. The friction lining and braking mechanism are subject to operational wear. For safe and trouble-free operation, the brake must be checked at regular intervals or replaced, if necessary ( 33). -
Page 39: Inspections
; check the screw plug; check the sembled brake O-rings ❚ Check rotor Inspections after re- moving the brake ❚ Check hub ❚ Check armature plate and counter friction face Tab. 17: Maintenance intervals INTORQ | BA 14.0200 | 02/2016... -
Page 40: Maintenance
If the gear teeth are damaged, replace the rotor. 3. Check hub: Check the teeth of the rotor for wear and seizing marks. If the gear teeth are damaged, dismount and replace the hub. INTORQ | BA 14.0200 | 02/2016... - Page 41 In the case of strong scoring, replace the flange. In the case of thermal damage (dark blue tarnishing), replace the flange. NOTICE Use new INTORQ screw sets when re-mounting the brake! 6. Assemble the brake ( 22). 7. Connect the supply cable.
- Page 42 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. Remove flange (6) from the end shield (15). INTORQ | BA 14.0200 | 02/2016...
- Page 43 2. Measure the DC voltage at the brake. Compare the DC voltage with the voltage indicated on the nameplate. A deviation of 10 % is per- missible. INTORQ | BA 14.0200 | 02/2016...
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Page 44: Spare-Parts List
Socket head cap screw set DIN EN ISO 4762 Double-rotor design Fixing screw set For flange mounting (single-rotor design) For "Complete Flange" component (double- rotor design) Locking element of the manual release Optional Tab. 18: Spare-parts list INTORQ | BA 14.0200 | 02/2016... -
Page 45: Accessories
The rotor must be able to rotate freely. This position is set by correspondingly moving the clip (12.11). 5. Check the function of the manual release or locking element; if required, repeat the adjustment process. INTORQ | BA 14.0200 | 02/2016... -
Page 46: Troubleshooting And Fault Elimination
The fault may occur later during heating-up. Air gap too big Replace the rotor 42 and read corresponding note Rotor thickness too small Tab. 19: Troubleshooting INTORQ | BA 14.0200 | 02/2016... - Page 47 Defective rectifier diode Replace defective rectifier with a suitable undamaged one. AC voltage is not mains Fuse is missing or defec- Install fuse. voltage tive Exchange fuse. Tab. 20: Deviations in measured values INTORQ | BA 14.0200 | 02/2016...
- Page 48 Notes Notes INTORQ | BA 14.0200 | 02/2016...
- Page 49 INTORQ GmbH & Co KG Germany PO Box 1103 D-31849 Aerzen, Germany Wülmser Weg 5 D-31855 Aerzen, Germany +49 5154 70534-444 +49 5154 70534-200 info@intorq.com 应拓柯制动器 （上海）有限责任公司 INTORQ (Shanghai) Co., Ltd. 上海市浦东新区泥城镇新元南路 600 号 6 号楼一楼 B 座...
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