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Installation and Operational Instructions for  
ROBA-stop

®

-S brake  Type 856. _ _ _ . _ 

Sizes 8, 9 and 10

 

(B.8.3.GB)

 

03/11/2010 TK/KE/GC/SU 

Chr. Mayr GmbH + Co. KG 

Tel.: 08341 / 804-0 

 

Eichenstraße 1 

Fax: 08341 / 804-421 

 

D-87665 Mauerstetten 

http://www.mayr.de 

Page 1 of 14 

Germany 

E-Mail: 

[email protected]

 

 

Please read these Operational Instructions carefully and follow them accordingly! 

Ignoring these Instructions may lead to malfunctions or to brake failure, resulting in damage to other parts. 

These Installation and Operational Instructions (I + O) are part of the brake delivery. 

Please keep them handy and near to the brake at all times. 

 

Contents: 

Page 1:  - Contents 
 

- Safety and Guideline Signs 

 

- Guidelines on EU Directives 

Page 2:  - Safety Regulations 

Page 3:  - Safety Regulations 

Page 4:  - Safety Regulations 

Page 5:  - Brake Illustrations 
 

- Parts List 

Page 6:  - Design 
 

- Function 

 

- State of Delivery 

 

- Installation Conditions 

Page 7:  - Brake Attachment 
 

- Air Gap Inspection 

Page 8:  - Air Gap Re-adjustment 
 

- Replacing the Rotor 

 

- Tacho Attachment (Option) 

 

- Electrical Connection and Wiring 

Page 9:  - Electrical Connection and Wiring 

Page 10: - Electrical Connection and Wiring 

Page 11: - Release Monitoring 

Page 12: - Braking Torque Adjustment 

Page 13: - Emergency Release 
 

- Anti-condensation Heating (Option) 

 

- Condensation 

 

- Disposal 

Page 14: - Malfunctions / Breakdowns 
 

Safety and Guideline Signs 

DANGER 

Immediate and impending danger which can 
lead to severe physical injuries or to death. 

 

CAUTION 

Danger of injury to personnel and  
damage to machines. 

 

 

Please Observe
Guidelines on important points. 

 
 
 

 

According to German notation, decimal points 
in this document are represented with a 
comma (e.g. 0,5 instead of 0.5). 

 
 
 
 
 

 
 

 

Guidelines on the Declaration of Conformity 
A conformity evaluation has been carried out for the product (electromagnetic safety brake) in terms of the EC Low 
Voltage Directive 2006/95/EC. The declaration of conformity is set out in writing in a separate document and can be 
requested if required. 

Guidelines on the EMC Directive (2004/108/EC) 
The product cannot be operated independently in terms of the EMC directive. 
Due to their passive quality, brakes are also non-critical equipment according to the EMC. 
Only after integration of the product into an overall system can it be evaluated in terms of the EMC. 
For electronic equipment, the evaluation has been verified for the individual product in laboratory conditions, but not in the 
overall system. 

Guidelines on the Machinery Directive (2006/42/EC) 
The product is a component for installation into machines according to the Machinery Directive 2006/42/EC.  
The brakes can fulfil the specifications for safety-related applications in connection with other elements.  
The type and scope of the required measures result from the machine risk analysis. The brake then becomes a machine 
component and the machine manufacturer assesses the conformity of the safety device to the directive. 
It is forbidden to start use of the product until you have ensured that the machine accords with the regulations stated in the 
directive. 

Guidelines on the ATEX Directive 
Without a conformity evaluation, this product is not suitable for use in areas where there is a high danger of explosion.  
For application of this product in areas where there is a high danger of explosion, it must be classified and marked 
according to directive 94/9/EC. 

 

 

 

Содержание ROBA-stop-S

Страница 1: ...al points in this document are represented with a comma e g 0 5 instead of 0 5 Guidelines on the Declaration of Conformity A conformity evaluation has been carried out for the product electromagnetic safety brake in terms of the EC Low Voltage Directive 2006 95 EC The declaration of conformity is set out in writing in a separate document and can be requested if required Guidelines on the EMC Direc...

Страница 2: ... of damage before putting them into operation Never bring them into contact with water or other fluids Please observe the EN 60204 1 requirements for electrical connection when using in machines Only carry out installation maintenance and repairs in a de energised released state and secure the system against inadvertent switch on Guidelines for Electromagnetic Compatibility EMC In accordance with ...

Страница 3: ...essive corrosive substances solvents acids lyes salts etc near to the brakes For longer storage of more than 2 years special measures are required please contact the manufacturer Handling Before installation the brake must be inspected and found to be in proper condition The brake function must be inspected both once installation has taken place as well as after longer system downtimes in order to...

Страница 4: ...t valid Liability for damage and operational malfunctions will not be taken if the Installation and Operational Instructions are ignored or neglected the brakes are used inappropriately the brakes are modified the brakes are worked on unprofessionally the brakes are handled or operated incorrectly Guarantee The guarantee conditions correspond with the Chr Mayr GmbH Co KG sales and delivery conditi...

Страница 5: ...ssembly 3 Flange plate assembly 3 1 Stud screws 3 2 O ring 3 3 O ring 4 Rotor assembly 5 Armature disk assembly 6 Thrust spring 7 Cap screw 8 Washer 9 Thrust spring 10 Screw plug 11 Copper sealing ring 12 Screw plug 13 Copper sealing ring 14 Screw plug 15 Copper sealing ring 16 Sealing cover 17 Hexagon head screw 18 O ring 19 Cap nut 20 Washer 21 Distance washer assembly inc cap screw 22 Microswit...

Страница 6: ...y brake function The ROBA stop S brakes reliably and safely in the event of a power switch off a power failure or an EMERGENCY STOP State of Delivery Figs 1 4 The ROBA stop S brake is pre assembled and screwed together with the flange plate 3 The emergency release screws 7 are screwed into the armature disk 5 and serve as a shipping brace The Technical Data is stated on the Type tag 25 Please chec...

Страница 7: ...t damage the O rings 3 2 and 3 3 7 Screw on the brake using the cap nuts 19 and the washers 20 Do not tilt Observe the tightening torque acc Table 1 Fig 7 Table 1 Size 8 9 10 Tightening torque for cap nuts 19 Nm 13 26 26 Nominal air gap mm 0 20 0 25 0 25 0 25 0 25 0 25 Max air gap mm 0 75 1 0 1 1 Min air gap for re adjustment mm 0 65 0 8 0 8 8 Unscrew the screw plugs 10 inc the copper sealing ring...

Страница 8: ...11 back in The emergency release screws 7 are spring applied 11 Check the air gap Replacing the Rotor 4 1 Follow the procedure as described in section Air Gap Re adjustment points 1 4 2 Replace the rotor 4 Check that the toothing moves easily The rotor 4 must be placed onto the hub so that the toothing remains engaged even after wear on the friction linings 3 Screw the distance washers 21 onto the...

Страница 9: ...etween overexcitation and separation time t2 is roughly indirectly proportional meaning that at doubled nominal voltage the separation time t2 for release of the brake is halved The ROBA multi switch fast acting rectifier and phase demodulator work on this principle Operation with overexcitation requires an inspection of the required overexcitation time as well as the RMS coil capacity with a cycl...

Страница 10: ... rated voltage and the rated operation current are sufficient Depending on the application the switching contact can also be protected by other protective circuits e g mayr spark quenching unit half wave and bridge rectifiers although this may of course then alter the switching times Connection Examples The coil voltage and if applicable the voltage of the option Anti condensation heating are stat...

Страница 11: ...ge the microswitch position axially using a feeler gauge Here please observe the following a Feeler gauge X 0 1 mm Microswitch must not switch contact brown blue opened b Feeler gauge X 0 15 mm Microswitch must switch contact brown blue closed 5 Tighten the fixing screws of the microswitch 22 holding bracket 6 Attach the terminal block rectifier Fig 13 If the air gap between the coil carrier 2 and...

Страница 12: ...sert two springs located opposite each other to make sure that the armature disk 5 is loaded evenly Only use mayr thrust springs Table 2 Spring Configuration Size Nominal torque 10 springs Nm 8 springs Nm 6 springs Nm 4 springs Nm 8 100 80 60 40 9 200 160 120 80 10 400 320 240 160 Torque tolerance 40 20 Further spring configurations or braking torques on request 9 Insert the armature disk 5 Please...

Страница 13: ...the copper sealing rings 11 back in The emergency release screws 7 are spring applied Fig 15 Anti Condensation Heating Option The anti condensation heating is used for preventing condensation precipitate in the brake interior For connecting the anti condensation heating AC voltage see the Wiring Diagram Condensation Fig 16 The condensation must be checked regularly via the screw plug 14 with the c...

Страница 14: ...l remove the distance washers before reaching the max air gap Coil interruption Rectifier failure Incorrect voltage on rectifier Clean the brake Re adjust the brake replace the brake Insert distance washers between the coil carrier and the flange plate Replace brake Replace rectifier Apply correct voltage Brake does not brake Emergency release screws are not loosened Grease or oil on the friction ...

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