Product number / type number / version number ................33 Specialist repair shops ........................33 Revision history ........................... 33 Document information: Issued by: Kendrion (Villingen) GmbH Last updated: 13/03/2020 Replaces document: - Replaces the issue dated: 01/04.2018 Document type: translation of original German operating Document status: released instructions BA 76 ..G..B00...
Should any queries arise with respect to torques, torque variations, installation position, wear, wear reserve, switching work, break-in conditions, release range, ambient conditions and the like, please contact Kendrion (Villingen) and ask for clarification before starting to use the brake. Spring-applied brakes are not ready-to-use devices, but are intended to be incorporated into or assembled with other equipment.
Annex VII, part B of Machinery Directive 2006/42/EC. The manufacturer undertakes to submit an electronic copy of the relevant technical documentation compiled for the partly completed machinery if reasonably requested by national authorities. Manufacturer: Kendrion (Villingen) GmbH Person authorized Dominik Hettich Wilhelm-Binder-Str.
Directive 2014/34/EU (ATEX Directive). This declaration will cease to be valid if modifications are made to the product without prior permission from the manufacturer. Manufacturer: Kendrion (Villingen) GmbH Person authorized: Dominik Hettich Wilhelm-Binder-Str. 4-6...
2011/65/EU (RoHS Directive). The products are classified as category 11 equipment subject to Directive 2011/65/EU (RoHS Directive). This declaration will cease to be valid if modifications are made to the product without prior permission from the manufacturer. Manufacturer: Kendrion (Villingen) GmbH Person authorized: Dominik Hettich Wilhelm-Binder-Str. 4-6...
2. Product description 2.1 Operating principle The spring-applied single-disc brake is designed to operate dry. The force generated by an electromagnetic field is utilized to overcome the braking effect produced by the spring force. The spring-applied single-disc brake engages in unpowered condition and releases when AC voltage is applied. The form-fit connection between the friction disc and hub and the connection of the hub with the machine shaft (e.g.
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List of reference numerals in Fig. 9/1: Solenoid housing 13.3 Angle Junction box Field coil 13.4 Countersunk screw Cover Armature 13.5 Plate Socket head cap screw Flange 13.6 Socket head cap screw Spring washer Compression spring 13.7 Connecting cable (microswitch) Hand release Friction disc Circlip (outer ring)
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Operating Instructions BA 76..G..B00 // Last updated: 13/03/2020 // Page 9 of 34...
3. Installation 3.1 Mechanical installation Slip the hub (17) of the spring-applied single-disc brake on a shaft (tolerance h6) provided with a feather key to DIN 6885, sheet 1. As the hub (17) is firmly fitted to the brake, it need not be axially secured on the machine shaft (e.g. motor shaft).
3.2 Installation of the hand release (29) (brake types with hand release) Insert the hand release handle (29) into the square socket of the two cams (29.1) that are firmly fitted to the circumference of the solenoid housing (1.1). Ensure that the handle is correctly positioned. The mechanical release forces F and the maximum permissible release forces (actuation forces) F are specified in Table 11/1.
Attention! When fixing the cover (26) to the junction box (25), the M tightening torques for the socket head cap screws specified in Table 15/1 must be strictly observed. The flat seal (9) and spring washer (28) must be installed as shown in Fig.
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AC side switching DC side switching Built-in rectifier Brake field coil (1.2) Control relay for brake Safety switches (microswitch contacts (only brake types with microswitch (13) and thermoswitches (11 & 12)) Control relay for machine (e.g. motor) Built-in bridge rectifier with DC side disconnection Fig.
Attention! To avoid damage (e.g. burns or fusing of contacts) to the external circuitry in case of DC side brake switching, additional protection elements (e.g. varistors, spark arresters, etc.) are necessary. Warning! Work on the brake must only be carried out by suitably qualified personnel. Make sure that no voltage is applied during brake connection.
Size tightening torque [Nm] for socket head cap screws (20) of cover (7) tightening torque [Nm] for socket head cap screws (22) of flange (3) tightening torque [Nm] for socket head cap screws (27) of junction box (25) cover (26) Table 15/1: Tightening torques for socket head cap screws Note! Machinery-specific regulations and requirements (e.g.
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EN 61000-4-4 Fast transients (burst): The brakes comply at least with severity level 3 without requiring additional measures. The built-in rectifier conforms to severity level 3 without additional measures. EN 61000-4-5 Surge: The brakes comply at least with severity level 3 without requiring additional measures. The built-in rectifier conforms to severity level 3 without additional measures.
E76 00A0030 000 recommended by Kendrion. This can also be accomplished by using a sealing device available from Kendrion. In this case, the maximum possible protection rating is IP 56. After connection of the brake, a functional test must be performed to check that the friction disc (5) moves smoothly.
Warning! Before starting the machine (e.g. motor) test run without driven components, the feather key (if used) must be secured in such a way that it cannot be hurled out. Ensure that the shaft is not exposed to load torques. Before the machine is re-started, the brake must be de-energized.
Warning! Any adjustment of the rated torque must be performed by the manufacturer or by authorized specialist personnel. 4. Maintenance 4.1 Checks and service The spring-applied single-disc brake does not require any particular maintenance except that the friction disc (5) must be replaced when worn (see “Technical specifications” for information on the maximum air gap s and that the safety switches (microswitch (13) and thermoswitches (11 &...
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Friction disc (5) replacement: Remove the self-locking nut (31) from the socket head cap screws (32). Loosen the socket head cap screws (22) provided on the flange (3) and remove the flange (3). Remove the friction disc (5) from the hub (17) and replace it by a new one.
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Microswitch (13) adjustment or replacement (relevant only for brake types equipped with microswitch): The spring-applied single-disc brake must be released electrically before the microswitch (13) can be adjusted. Loosen the socket head cap screws (20) provided on the cover (7) and remove the cover (7). Unscrew the locknut (13.1) and turn the set screw (13.2) clockwise until the microswitch (13) switches (slight audible click or contact closure between contacts 5 and 6 (see Section 3.3).
Caution! Whenever inspection and maintenance work is carried out, ensure that the machine (e.g. motor) is secured against accidental or unintentional start-up. • no load torque acts on the shaft. • the lock provided to prevent accidental start-up of the machine (e.g. motor) is removed after completion •...
Note! The environmental conditions specified in Table 23/1 and in EN IEC 60721-3-2 / EN IEC 60721-3-1 must be considered during transport and storage of the brake, especially when long-term storage is envisaged. Environmental conditions Conditions for storage Conditions for transport to EN IEC 60721-3-1 to EN IEC 60721-3-2 Mechanical environmental conditions...
7. Troubleshooting Fault Cause Corrective actions Check the air gap. Install a new friction disc, if Air gap too large • necessary. Check the electrical connection and correct faults, if • No voltage applied to brake found. Check the field coil supply voltage and correct faults, if •...
Kendrion and ask for clarification before using the brake. Retrofitting or modification work to be carried out on the brake is subject to the approval from Kendrion (Villingen).
8.2.1 Set-up Requirements in terms of the permissible number of switching operations per hour and the maximum switching work per switching operation (see Fig. 32/1) specified in the technical specifications must be strictly observed during the set-up of machines and plant (jog mode). Failure to observe these instructions may irreversibly diminish the braking effect and cause malfunctions.
Notice! During brake operation, ensure that the coil temperature does not rise above the permissible limit temperature applicable to the insulating materials of the specified insulation class (see Table 30/1). Fast cooling of the field coil with scavenging air is not allowed. Ensure that the permissible relative humidity range (see Table 31/2) is not exceeded.
9. Definitions (based on: DIN VDE 0580:2011-11, not exhaustive) Switching torque M torque acting on the shaft during brake or clutch slip Rated torque M switching torque specified by the manufacturer to identify the brake. The rated torque M is the mean value of at least 3 measurements of the maximum switching torque M after completion of the transient response.
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Overtemperature ∆ϑ difference between the temperature of the electromagnetic device or a part thereof and the ambient temperature Limit temperatures of coil insulating materials in accordance with DIN VDE 0580. The individual insulating materials are classified by insulation classes to DIN IEC 60085. Rated voltage U supply voltage specified by the manufacturer for voltage windings to identify the device or component...
10. Technical specifications Product built and tested to DIN VDE 0580 Size Rated torque M [Nm] Max. speed n [rpm] 6000 6000 3600 3600 3600 3600 Max. switching power P [kJ/h] Apparent power P [VA] Coupling time t [ms] Disconnection time t [ms] Moment of inertia J –...
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Size Max. rated voltage [VAC] Rated current (cos ϕ=1.0) [A] Rated current (cos ϕ=0.6) [A] Service life (switching operations) 5000 Contact type normally closed (NC) Nominal temperature (switching temperature) thermoswitch 11 (flange (3)) [°C] Nominal temperature (switching temperature) thermoswitch 12 (coil (1.2)) [°C] Min.
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Explanations on the technical specifications: (maximum switching work) is the switching work that 100000 must not be exceeded during braking operations at maximum speeds of 1500 rpm. Braking operations at speeds greater than 1500 rpm substantially reduce the Size 24/19 Gr.