ROBA-stop -M Electromagnetic safety brakes

Transcription

1 ROBA-stop -M Electromagnetic safety brakes ROBA-stop Always the safest choice for brakes Fast and cost-effective installation High Protection IP4 / IP6 Maintenance-free for the rotor lifetime K.89.V09.GB C US your reliable partner

2 ROBA-stop -M electromagnetic safety brakes Your Reliable Brake easy installation insulation material class F; 00 % duty cycle short switching times different torque variants due to variable equipment completely enclosed IP4 / IP6 minimum torsional backlash due to accurate toothing long service lifetime low wear Advantages for Your Applications Easy installation Brake outer diameter completely enclosed (higher protection can easily be realised) Magnetic coil is designed for a relative duty cycle of 00 % Magnetic coil and casting compound correspond to insulation material class F The nominal air gap is constructionally specified and inspected Short switching times Maintenance-free for rotor lifetime Designs and Variants See Type key on page 3, Dimensions Figs., Technical Data and Dimensions Sheets on pages 4 and and Further Options on page 0. Function ROBA-stop -M brakes are spring applied, electromagnetic safety brakes. Spring applied: In a de-energised condition, helical springs (6) press against the armature disk (). The rotor (3) is held between the armature disk () and the corresponding mounting surface of the machine. The shaft is braked via the gear hub (). Electromagnetic: When the power is switched on, a magnetic field is built up. The armature disk () is attracted to the coil carrier () against the spring pressure. The brake is released and the shaft is able to rotate freely. Safety brakes: The brake brakes reliably and safely in the event of power switch-off, a power failure or an EMERGENCY STOP. 3 6

3 ROBA-stop -M electromagnetic safety brakes ROBA-stop -M Page 4 s up to 000 Braking torques 0,7 up to 400 Nm (Standard brake) 4 up to 600 Nm (Holding brake) Permitted shaft diameters 8 up to 90 Type 89._.0 Type 89._.0 Type 89._4. Type 89._4. Standard design Page Standard design with friction disk IP6 design with flange plate Tacho attachment design with flange plate Short Description Installation Page 6 Brake Dimensioning, Friction-Power Diagrams Page 8 Further Options Page 0 Switching Times, Electrical Connection, Electrical Accessories Page Guidelines Page 9 Order Number Nominal torque holding brake Nominal torque standard 84 % nominal torque 6) 68 % nominal torque 6) 0 % nominal torque 6) 34 % nominal torque 6) ) 6) Nominal torque adjustable % nominal torque 6) % nominal torque 6) Without supplementary parts Hand release ) Friction disk 7) ) 7) Hand release/friction disk Flange plate 8) ) 8) Hand release/flange plate / / / / s up to 000 Standard brake metal rotor 3) Holding brake metal rotor Standard brake Friction lining rotor 4) 0 Standard ) Enclosed design IP6 ) Tacho design ) Central torque adjustment ) 0 3 Coil voltage 9 ) [VDC] 4 0) Bore Hub Ø d (please observe dimensions pages 4-, Table, page 7) Keyway acc. DIN 688/ or DIN 688/3 Example: 6 / / 4 / 6 / 688/ For Further Options, see page 0. ) Hand release not installed on sizes : hand release only available as emergency hand release. Hand release for IP6 design only ex works. ) On request 3) From size 60 4) Up to size 3 (for brake operation in hoisting device drives, please contact the manufacturer) ) Not in combination with friction disk 6) See Technical Explanations pages 6 7 7) s 60 8) Standard tacho brake flange plate 9) Brake operation only with overexcitation on size 00 from 700 Nm onwards and on size ) Not possible on size 000. ) Standard and tacho design are identical on size 000. Please Observe: According to German notation, decimal points in this document are represented with a comma (e.g. 0, instead of 0.). We reserve the right to make dimensional and constructional alterations. ROBA-stop -M brakes are also available in ATEX-design according to the directive 94/9 EC (ATEX 9) (Please contact the manufacturer separately for this). 3

4 ROBA-stop -M electromagnetic safety brakes Type 89._.0 Ø f 90 (3x0 ) K H L + 0, a - 0,0 air gap (+ 0, on size 00) F F s x 0 (x80 ) Ø D h9 Ø M Ø R Ø r Ø d H7 l Ø G 4 Cable approx. 400 mm long for sizes 60, for sizes approx. 600 mm long for size 000 approx. 000 mm long c Technical Data Braking torque Standard brake ) Type _ M nom [Nm] ) 000 ) Holding brake.) Type 89.._ M nom [Nm] ) 600 ) Input power P nom [W] Maximum speed n max. [rpm] Weight Standard brake Type _ m [kg] 0,76,,8 3,4 4, 7,4 3,6 9, 33, Holding brake Type 89.._ m [kg] 0,76,,8 3,4 4, 7,4 3,6 9, 33, Bores H7 ) Bore Ø d Standard brake Type _ Holding brake Type 89.._ min. [mm] ) 0.) 7 max. [mm] Please observe Table, page 7 min. [mm] max. [mm] Please observe Table, page 7 4 Dimensions [mm] a 0, 0, 0, 0, 0, 0, 0,3 0,3 0,3 0,4 0, b b c 4 6, 8,7 3, 39, 0, c 7, 9,7 36,8 40,, c 9 3, 34,7 4, 47, 8, D D D F 48, 4 63, , F 0, 08 7, , f

5 ROBA-stop -M electromagnetic safety brakes Type 89._.0 Standard with friction disk K h L 3 L Type 89._4. Enclosed design (IP 6) with flange plate K h L 4 L Type 89._4. Tacho attachment design with flange plate K 3 h L L Ø D h9 * Ø b Ø D h9 * Ø b Ø G H8 Ø s Ø D Ø D g7 Ø b t z H7 Ø G Ø M Ø Z c c g c * Outer diameter friction disk: free size; outer diameter flange plate: -0, Missing dimensions are identical with Type see page 4. Dimensions [mm] G 6, G 3, 8, 3, 40,, 60 7, 8, G H g H 6 4, 7, , - h,,, h K 0 0,8,,3 8, , K 9 9,8,, 7, 0, K 0 8,8, 0,3 0,3 4 8,, 7, K 3 0 9,8, 0,3 0, L 39 4, 4,,7 6,7 7, ) 7) 3 L 38 40, 44, 4,7 60,7 7, ) L , 46, , L ,, 6,7 69,7 80, ) L 43 46, 0, 6,7 68,7 79, ) l ) 70 supporting length of the key M M , R , r s M4 M4 M M6 M6 M8 M8 M8 M0 6 x M0 6 x M 8) s M3 M4 M4 M4 M M M M6 M6 6 x M8 6 x M6 t x , 0-0, , Z z - Standard voltages 4; 04; 80; 07 V. Permitted voltage tolerance acc. DIN IEC (±0 %). ) Braking torque tolerance = +30 %/-0 %, for other adjustments see Table 3, page 7 and Type key page 3..) Minimum bore not permitted for braking torque adjustment = %..) Braking torque tolerance = +40 %/-0 % (slight grinding necessary). ) The respective maximum bores are to be seen in relation to the corresponding keyways and their tolerances acc. Table page 7. 3) Brake operation from 700 Nm on only possible with overexcitation. We reserve the right to make dimensional and constructional alterations. 4) Hub facing side (both sides) 3 mm deep, Ø 97 recessed. ) Brake operation only possible with overexcitation. 6) The IP6 design is equipped with a sealing cover on size 000: L = 49 mm, L 4 = 70 mm. 7) Projection screw plugs (emergency hand release): 8, mm 8) For flange plate securement: additional x M screws (dimensions available on request).

6 ROBA-stop -M Short Description Installation 6 Installation Conditions 0 The eccentricity of the shaft end against the mounting pitch circle may not exceed 0, mm. The position tolerance of the threaded holes for the cap screws (8, Fig. ) may not exceed 0, mm. The axial run-out deviation of the screw-on surface to the shaft may not exceed the permitted axial run-out tolerance according to DIN 49. Larger deviations can lead to a drop in torque, to continuous slipping on the rotors and to overheating. Fig. 3 Inspection dimension x 4 Installation ROBA-stop -M brakes are very easy to install: 7. Mount the hub () onto the shaft and secure it axially (e.g. using a locking ring). Recommended tolerance of hub-shaft connection = H7/k6. Avoid too tight hub-shaft connections (especially on max. bores). They lead to the rotor (3) jamming on the hub () and therefore to brake malfunctions. Keep the friction surfaces free of oil and grease. Warning! Please observe supporting length of the key acc. Dimensions on page.. If necessary (dependent on Type), move the friction disk or the flange plate over the shaft and attach it to the machine wall (or screw on for size 000). If there are no suitable counter-friction surfaces made of grey cast or steel available, please use brake Types 89. /3._ (with friction disk (9)) or 89..4/._ (with flange plate). When using a brake with a friction disk (Type 89. /3._), please observe the stamp friction side on the friction disk. 3. Push the rotor (3) onto the hub () by hand. 4. If necessary, install the hand release (only on sizes - 00/the emergency hand release is partly assembled on size 000).. If necessary (dependent on Type, Type 89. _.), insert the O-ring into the axial recess of the coil carrier (). 6. Push the rest of the brake over the hub () and the rotor collar (3). 7. Attach the brake to the motor bearing shield or onto the machine wall evenly all around by using the cap screws (8) incl. the manufacturer-side mounted flat sealing ring (dependent on Type, Type 89. _.), torque wrench and tightening torque (acc. Table, page 7). Warning! Only use mayr original screws (Table, page 7). 3 9 Fig. F α Braking Torque Adjustment It is possible to achieve different torque settings or torque reductions by using different spring configurations (6) in the coil carrier () (see Table 3, page 7). Design with continuous setting available on request. Hand Release Installation (s 00) On Type 89. _. installation of the hand release is only possible if a request for a hand release is stated on the brake order form (completely enclosed coil carrier ()). The brake must be dismantled and de-energised for the hand release installation. Installation Procedure (Figs. and ):. Unscrew brake from the motor bearing shield or from the machine wall.. Remove the sealing plugs from the hand release bores in the coil carrier (). 3. Put the thrust springs (0) onto the threaded bolts (). The threaded bolts () are manufacturer-side produced with a key as a tension element and are secured with glue up to size M60. This connection must not be loosened. 4. Push the threaded bolts () with thrust springs (0) from the inside (facing the magnetic coil (7)) into the hand release bores in the coil carrier ().. Push the O-rings (only with sealed hand release, Type 89. _.) over the threaded bolts () and insert them into the recesses of the coil carrier (). 6. Push intermediate plates (only with sealed hand release, Type 89. _.) over the threaded bolts (). 7. Put the switch bracket () in place, put washers (3) onto it and lightly screw on the self-locking hexagon nuts (4). 8. Tighten both hexagon nuts (4) until the armature disk () lies evenly on the coil carrier (). 9. Loosen both hexagon nuts (4) by Y turns (see Table, page 7), thereby creating an air gap between the armature disk () and the coil carrier () or the inspection dimension x (Fig. ). Warning! An unequal alignment dimension on the hand release can cause the brake to malfunction. 0. After installing the release cover, screw the hand release bar () into the switch bracket () and tighten it. The hand release bar () must be protected against loosening with a screwsecuring product, e.g. Loctite 43. Maintenance ROBA-stop -M brakes are mainly maintenance-free. However, the rotor (3) is subject to functional wear. The friction linings are robust and wear-resistant. This ensures a particularly long service lifetime. However, if the rotor (3) does become worn due to high total friction work, the brake can be brought back into its original functional condition by replacing the rotor. For this, the brake must be cleaned thoroughly. The wear condition of the rotor (3) is determined by measuring the release voltage (this must not exceed max. 90 % of the nominal voltage on a warm brake), or by measuring the rotor thickness on a dismantled brake ( minimum rotor thickness acc. Table in the currently valid Installation and Operational Instructions). On sizes 00 and 000 there is an air gap inspection opening. This means that the brake does not have to be dismantled. Warning! The brake function cannot be guaranteed on brakes with a reduced braking torque and/or operation with a fast-acting rectifier if the friction linings are heavily worn. Unpermittedly high wear cannot be recognized via the switching behaviour of the brake, as in this constellation the magnetic coil (7) is able to manage a very high tension path of the armature disk (). Unpermittedly high wear causes the thrust springs (6) to relax, which results in a decrease in torque.

7 ROBA-stop -M Short Description Installation Technical Data for Installation Inspection dimension x [mm] 0,9 +0, 0,9 +0,, +0,,6 +0,,8 +0,, +0,, +0,, +0,,4 +0,,4 +0, - Number of rotations Y [-],7,7,,0,0,0,6,6,, - Release force Standard brake Type _ Holding brake Type 89.0 _._ F [N] F [N] Release angle a [ ] Fixing screws (8) Type _ Type _ [-] M4 x 4 M4 x 4 M x 0 M6 x 60 M6 x 60 M8 x 7 DIN [-] DIN M4 x M4 x M x M6 x M6 x M8 x M8 x M8 x M8 x M8 x M0 x M0 x x M0 x x M0 x Tightening torque for screws (8) T A [Nm],,,0 9,0 9, Rotor thickness new condition [mm] 6,0 6,0 6,9 8 0,4, 4, 7 8, 8, Table 6 x M x x M x Permitted Bores Ø d max Ø d max Type _ Type 89.._ Keyway JS9 Keyway P9 Keyway JS9 Keyway P / / / / / / / / Table Braking Torque Adjustments ) Holding brake [Nm] ) 600 % [Nm], ) 400 Standard brake Table 3 Braking torque 4) in % % [Nm], 4, % [Nm] % [Nm],7 3,4 6,8 3, % [Nm],4,8, % [Nm] % [Nm] 0,7,4,8, ) Brake operation only as holding brake. ) Brake operation from 700 Nm only possible with overexcitation. 3) Brake operation only possible with overexcitation. 4) The braking torque (switching torque) is the torque effective in the shaft train of a slipping brake with a sliding speed of m/s in relation to the mean friction radius (acc. VDE 080/07.000). 7

8 ROBA-stop -M Brake Dimensioning Brake Dimensioning Brake Selection. Brake selection Key: M req. = t v = 90 x P J [kgm²] Mass moment of inertia x K M [Nm] n K [-] Safety factor ( acc. to conditions) J x n [sec] 9, x M v M req. [Nm] Required braking torque t 4 = t v + t [sec] M v [Nm] Delaying torque M v = M + (-)* M L [Nm] M L [Nm] Load torque * sign in brackets is valid if load is braked during downward movement. Inspection of thermic load M [Nm] Nominal torque (Technical Data page 4) Q r = J x n² M n [rpm] Speed x [J/braking] 8,4 M v P [kw] Input power The permitted friction work (switching work) Q r perm. per braking for the specified switching frequency can be taken from the frictionpower diagrams (page 9). If the friction work (switching work) per braking is known, the max. switching frequency can also be taken from the friction-power diagrams (page 9). t v [s] Braking action t [s] Connection time (Table 6 page 0) t 4 [s] Total switch-on time Q r [J/braking] Friction work present per braking Q r 0, [J/0,] Friction work per 0, wear (Table 4) Q r tot. [J] Friction work up to rotor replacement (Table 4) Please Observe! Due to operating parameters such as slipping speed, pressing or temperature, the wear values can only be considered guideline values. When using a brake with a friction disk (Type 89.._), the max. friction work and friction power must be reduced by 30 % for sizes to 6 and by 0 % for sizes The wear values Q r 0, and Q r tot. are therefore not valid. Friction Work Per 0, mm wear Standard brake Type _ Q r 0, [0 6 J/0,] Holding brake Type 89.._ Q r 0, [0 6 J/0,] Up to rotor replacement Standard brake Type _ Q r tot. [0 6 J] Holding brake Type 89.._ Q r tot. [0 6 J] Table 4 Mass Moment of Inertia Rotor + hub at d max Type _ (Metal rotor) Type 89.._ (Friction lining rotor) J R+H [0-4 kgm²] 0, 0, 0,67,74 4,48 6,74 6,4 3,68 6,8,6 44 J R+H [0-4 kgm²] 0, 0,7 0,8,3 4, Table

9 ROBA-stop -M Friction-Power Diagrams Friction-Power Diagrams Type 89.0_._ and Type 89._._ (Standard brake) for 0 % of the maximum speed n max Permitted switching work Q r perm. [J/braking] Switching frequency [/h] Diagram Type 89.0_._ and Type 89._._ (Standard brake) for the maximum speed n max Permitted switching work Q r perm. [J/braking] Switching frequency [/h] Diagram Type 89.0_._ (Holding brake) for 0 % of the maximum speed n max Type 89.0_._ (Holding brake) for the maximum speed n max Permitted switching work Q r perm. [J/braking] Switching frequency [/h] Switching frequency [/h] Diagram 3 Diagram 4 Permitted switching work Q r perm. [J/braking] 9

10 ROBA-stop -M Further Options Further Options In addition to the standard brakes, mayr power transmission provides a multitude of further designs, which cannot be described in detail in this catalogue. Some of the most frequently requested options are: Microswitch for switching condition indication (release inspection) Microswitch for wear indication (wear inspection) Special coil voltages Lockable hand release IP6 design for continuous shafts Noise damping (O-ring damping between the gear hub and the rotor) Anti-condensation heating Customer-specific flange plate Special lubricating material ATEX design Please contact mayr for further information. Release inspection When the magnetic coil in the coil carrier (Item ) is energised, the armature disk (Item 3) is pulled towards the coil carrier (Item ). The microswitch (Item ) emits a signal and the brake is released. 3 Continuous shaft with IP6 The enclosed design (IP6) is equipped with a screw plug (sizes 8 to 00) or with a sealing cover (size 000) (see Type 89._4., page ) as part of the standard delivery. A radial shaft sealing ring (Item ) is installed in the coil carrier (Item ) on continuous shafts. Damping rotor/gear hub If vibrations in the drive line cannot be avoided, an O-ring (Item ) is used to damp backlash between the gear hub (Item 6) and the rotor (Item ). 6 Fig. 4 Fig. Wear inspection Due to wear on the rotor (Item ), the nominal air gap a between the coil carrier (Item ) and the armature disk (Item 3) increases. If the limit air gap (see Table in the Installation and Operational Instructions) is reached, the microswitch contact (Item ) switches over and emits a signal. The rotor (Item ) must be replaced. Air gap a Fig. 3 Air gap a Fig. Anti-condensation heating The anti-condensation heating (Item ) is used to prevent condensation formation inside the brake. This product is particularly useful at temperatures of under zero degrees Celsius or in high humidity. Lockable hand release In de-energised condition, the brake with lockable hand release can be released manually. By moving the hand release rod (Item ), the armature disk (Item 3) is pushed against the thrust springs (Item 4) onto the coil carrier (Item ) and the braking torque is removed. 3 Special flange plate We offer a range of flange plates for customer-specific solutions, such as for example the special flange plate shown in Fig. 7 (Item ) with customer-tailored centring (Item 8) and sealing (Item 7). 7 8 Fig. 6 4 Fig. 3 0 Coil Hand release in starting position Hand release in engaged position energised Shaft braked Shaft runs free de-energised Shaft runs free Shaft runs free Fig. 7

11 ROBA-stop -M Switching Times / Electrical Connection Switching Times The values are mean values which refer to the nominal air gap and the nominal torque (00 %) for a warm brake. For other braking torque adjustments, see Diagram: Brake separation time t dependent on spring configuration on page. Switching Times Nominal torque (00 %) M [Nm] Connection time Response delay on connection DC-side switching t [ms] AC-side switching t [ms] DC-side switching t [ms] AC-side switching t [ms] Separation time t [ms] * Table 6 * Value in operation with overexcitation M M P ON OFF M 6 M t t t 4 t M 4 t 0, M t t Key: M M M 4 M 6 P t t t t t 4 = Switching torque = Nominal torque (characteristic torque) = Transmittable torque = Load torque = Input power = Connection time = Response delay on connection = Separation time = Response delay on separation = Total switch-on time + t Diagram : Torque-Time Electrical Connection and Wiring DC current is necessary for the operation of the brake. The coil voltage is indicated on the Type tag as well as on the brake body and is designed according to the DIN IEC (± 0 % tolerance). Operation is possible both via alternating voltage in connection with a rectifier or with another suitable DC supply. Dependent on the brake equipment, the connection possibilities can vary. Please follow the exact connections according to the Wiring Diagram. The manufacturer and the user must observe the applicable directives and standards (e.g. DIN EN and DIN VDE 080). Their observance must be guaranteed and double-checked. Earthing Connection The brake is designed for Protection Class I. This protection covers not only the basic insulation but also the connection of all conductive parts to the PE conductor on the fixed installation. If the basic insulation fails, no contact voltage will remain. Please carry out a standardized inspection of the PE conductor connections to all contactable metal parts. Device Fuses To protect against damage from short circuits, please add suitable device fuses to the mains cable. Switching Behaviour The operational behaviour of a brake is to a large extent dependent on the switching mode used. Furthermore, the switching times are influenced by the temperature and the air gap between the armature disk and the coil carrier (dependent on the wear condition of the linings). Magnetic Field Build-up When the voltage is switched on, a magnetic field is built up in the brake coil, which attracts the armature disk to the coil carrier and releases the brake. Field Build-up with Normal Excitation If we energise the magnetic coil with nominal voltage, the coil voltage does not immediately reach its nominal value. The coil inductivity causes the current to rise slowly as an exponential function. Accordingly, the build-up of the magnetic field happens more slowly and the braking torque drop (curve, below) is also delayed. Field Build-up with Overexcitation A quicker and safer drop in braking torque is achieved if the coil is temporarily placed under a higher voltage than the nominal voltage, as the current then increases more quickly. Once the brake is released, it is possible to switch to the nominal voltage (curve, below). The relationship between the overexcitation and the separation time t is roughly proportional indirectly; this means that at doubled nominal voltage, the separation time t for brake release is halved. The ROBA -switch fast-acting rectifier works on this principle. Current path I nom I t Braking torque path M M nom Operation with overexcitation requires testing of: - the necessary overexcitation time * (page ) - as well as of the RMS coil capacity ** for a cycle frequency higher than cycle per minute (page ). t

12 Electrical Connection * Overexcitation time t over Increased wear and therefore an enlarged air gap as well as coil heat lengthen the separation time t of the brake. Therefore, as overexcitation time t over, please select at least double the separation time t with nominal power on each brake size. The spring forces also influence the brake separation time t : Higher spring forces increase the separation time t and lower spring forces reduce the separation time t. The separation time t alterations due to the spring configuration can be seen in the adjoining diagram. Spring force (braking torque adjustment) < 00 %: The overexcitation time t over is less than double the separation time t on each brake size. Example: braking torque adjustment = 34 % --> separation time t = 0 % --> overexcitation time t over = 00 % x 0 % = 00 % t Spring force (braking torque adjustment) = 00 %: The overexcitation time t over is double the separation time t on each brake size. Spring force (braking torque adjustment) > 00 %: The overexcitation time t over is higher than double the separation time t on each brake size. Example: braking torque adjustment = % --> separation time t = 0 % --> overexcitation time t over = 00 % x 0 % = 40 % t ** RMS coil capacity P RMS Calculations: 0 P RMS P nom The coil capacity P RMS must not be larger than P nom. Otherwise, the coil may fail due to thermic overload. P RMS [W] RMS coil capacity, dependent on switching frequency, overexcitation, power reduction and switch-on time duration P RMS = P over x t over + P hold x t hold t tot P nom [W] Coil nominal capacity (Catalogue values or Type tag) P over [W] Coil capacity on overexcitation P over = ( U over U nom )² x P nom P hold [W] Coil capacity on power reduction P hold = ( U nom )² x P nom t over [s] Overexcitation time t hold [s] Time of operation with power reduction t off [s] Time without voltage t tot [s] Total time (t over + t hold + t off ) U over [V] Overexcitation voltage (bridge voltage) U hold [V] Holding voltage (half-wave voltage) U nom [V] Coil nominal voltage Time Diagram: U over U nom U hold t over U hold t on t hold t tot t off Diagram: Brake separation time t dependent on spring configuration 40 % 0 % 00 % 80 % 60 % 40 % 0 % 34 % % 60 % 0 % 0 % 0 % 40 % 60 % 80 % 00 % 0 % 40 % 60 % Spring force (braking torque adjustment in %) N N S F S F R ROBA -switch 0/ U = 0,4 U~ 00-00V~ t: 0,0-sec V~ R: 0Ω-0MΩ L L 0 % IN S DC R ROBA -switch 0/ U = 0,4 U~ I max =,8A OUT 00-00V~ t: 0,0-sec V~ R: 0Ω-0MΩ IN Separation time t (in %) Magnetic Field Removal AC-side switching S DC OUT Coil F: external fuse I max =,8A + Coil F: external fuse R R Holding brake equals % spring force for s 00 The power circuit is interrupted before the rectifier. The magnetic field slowly reduces. This delays the rise in braking torque. When switching times are not important, please switch AC-side, as no protective measures are necessary for coil and switching contacts. AC-side switching means low-noise switching; however, the brake engagement time is longer (c. 6 0 times longer than with DC-side switch-off). Use for non-critical braking times. DC-side switching Holding brake equals 60 % spring force for 000 The power circuit is interrupted between the rectifier and the coil as well as mains-side. The magnetic field is removed very quickly, resulting in a rapid rise in braking torque. When switching DC-side, high voltage peaks are produced in the coil, which lead to wear on the contacts from sparks and to destruction of the insulation. DC-side switching means short brake engagement times (e.g. for EMERGENCY STOP operation). However, this produces louder switching noises. Protective Circuit When using DC-side switching, the coil must be protected by a suitable protective circuit according to VDE 080, which is integrated in mayr rectifiers. To protect the switching contact from consumption when using DC-side switching, additional protective measures may be necessary (e.g. series connection of switching contacts). The switching contacts used should have a minimum contact opening of 3 mm and should be suitable for inductive load switching. Please make sure on selection that the 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 units), although this may of course then alter the switching times.

13 Overview/Assortment Electrical Accessories Supply module Protective Circuit no overexcitation and no power reduction overexcitation (short separation time) and / or power reduction (reduction in coil capacity and temperature) variable output voltage fixed output voltage without DC-side disconnection integrated DC-side disconnection Type Type Type 07._00. Type Type Type Type Half-wave Rectifier Bridge Rectifier ROBA -switch ROBA -switch ROBA -switch 4V ROBA - multiswitch Spark Quenching Unit APPLICATION Standard application Standard application, preferred for noise-damped brakes Allows short separation time or reduction in coil capacity and temperature + short connection time + short connection time (for input voltage 4 VDC) + consistently controlled output voltage with variable input voltage Reductions in switch-off voltage and wear on contacts compact design compact design no wear on contacts no wear on contacts Example Available: Wanted: Required: network voltage 30 VAC short separation time (overexcitation) supply module / coil nominal voltage Solution: Supply modules available for selection: Type 07._00. (in Example below), Type or Type Coil nominal voltage: 04 VDC Example Available: Wanted: Required: network voltage 400 VAC short separation time (overexcitation) and and low coil temperature (power reduction) supply module / coil nominal voltage Solution: Supply modules available for selection: Type 07._00. (in Example below), Type or Type Coil nominal voltage: 07 VDC U over U over 07 VDC (Overexcitation voltage) 360 VDC (Overexcitation voltage) Type 07._00. Type 07._00. ROBA -switch ROBA -switch U nom 04 VDC (Coil nominal voltage) U nom 07 VDC (Coil nominal voltage) U hold 80 VDC (Holding voltage) 0 0 t t 3

14 Application Rectifiers are used to connect DC units to alternating voltage supplies, for example electromagnetic brakes and clutches (ROBA-stop, ROBA-quick, ROBATIC ), electromagnets, electrovalves, contactors, switch-on safe DC motors, etc. Function The AC input voltage (VAC) is rectified (VDC) in order to operate DC voltage units. Also, voltage peaks, which occur when switching off inductive loads and which may cause damage to insulation and contacts, are limited and the contact load reduced. Half-wave Rectifiers and Bridge Rectifiers Type 0_ Electrical Connection (Terminals) + Input voltage Connection for an external switch for DC-side switching + 6 Coil 7-0 Free nc terminals (only for size ) Dimensions (mm) A C 9 ØD E Order Number B / up to 4 4 Half-wave rectifier Bridge rectifier A B C ØD E , 4, ,,0 3/ ,,0 Accessories: Mounting bracket set for 3 mm rail acc. to EN 00: Article-No Technical Data Bridge rectifier Half-wave rectifier 4 Calculation output voltage VDC = VAC x 0,9 VDC = VAC x 0,4 Type /0 /0 /04 /04 3/04 4/04 Max. input voltage 30 VAC 30 VAC 400 VAC 400 VAC 00 VAC 600 VAC Max. output voltage 07 VDC 07 VDC 80 VDC 80 VDC VDC 70 VDC Output current at 0 C, A, A 3,0 A 4,0 A 4,0 A 4,0 A Output current at max. 8 C,7 A,7 A,8 A,4 A,4 A,4 A Max. coil capacity at VAC 0 C 60 W 60 W Max. coil capacity at VAC up to 8 C 77 W 77 W Max. coil capacity at 30 VAC 0 C 7 W 7 W 3 W 46 W 46 W 46 W Max. coil capacity at 30 VAC up to 8 C 3 W 3 W 87 W 0 W 0 W 0 W Max. coil capacity at 400 VAC 0 C W 70 W 70 W 70 W Max. coil capacity at 400 VAC up to 8 C W 43 W 43 W 43 W Max. coil capacity at 00 VAC 0 C W 900 W Max. coil capacity at 00 VAC up to 8 C W 40 W Max. coil capacity at 600 VAC 0 C W Max. coil capacity at 600 VAC up to 8 C W Peak reverse voltage 600 V 600 V 000 V 600 V 000 V 000 V Rated insulation voltage 0 V RMS 30 V RMS 00 V RMS 00 V RMS 630 V RMS 630 V RMS Pollution degree (insulation coordination) Protection fuse To be included in the input voltage line. Recommended microfuse switching capacity H The microfuse corresponds to the max. possible connection capacity. If fuses are used according to the actual capacities, please observe the permitted limit integral I²t on selection. FF 3,A FF 3,A FF 4A FF A FF A FF A Permitted limit integral l t 40 A s 40 A s 0 A s 00 A s 0 A s 0 A s Protection IP6 components, encapsulated / IP0 terminals Terminals Cross-section 0,4 -, mm (AWG 6-4) Ambient temperature - C up to + 8 C Storage temperature - C up to + 0 C Conformity markings UL, CE UL, CE UL, CE UL, CE UL, CE CE Installation conditions The installation position can be user-defined. Please ensure sufficient heat dissipation and air convection! Do not install near to sources of intense heat!

15 ROBA -switch Type 07._00. Application ROBA -switch fast acting rectifiers are used to connect DC consumers to alternating voltage supplies, for example electromagnetic brakes and couplings (ROBA-stop, ROBA -quick, ROBATIC ) as well as electromagnets and electrovalves etc. Fast acting rectifier ROBA -switch 07._00. Consumer operation with overexcitation or power reduction Input voltage: VAC Maximum output current I RMS : 3 A at 0 VAC UL-approved Function The ROBA -switch units are used for operation at an input voltage of between 00 and 00 VAC, dependent on size. They can switch internally from bridge rectification output voltage to halfwave rectification output voltage. The bridge rectification time can be modified from 0,0 to seconds by exchanging the external resistor (R ext ). Electrical Connection (Terminals) Dimensions (mm) Type Input voltage (fitted protective varistor) Connection for external contact for DC-side switch-off + 6 Output voltage (fitted protective varistor) R ext for bridge rectifier timing adjustment Ø4, 4 9 Technical Data Input voltage see Table Output voltage see Table Protection IP6 components, IP0 terminals, IP0 R ext Terminal nom. cross-section, mm, (AWG -4) Ambient temperature - C up to +70 C Storage temperature -40 C up to +0 C,6 4, ,6 7, Accessories: Mounting bracket set for 3 mm rail acc. to EN 00: Article-No. 809 ROBA -switch s, Table 3 Type Type Input voltage VAC ± 0 % Output voltage VDC, U bridge Type Ø4, 9 Output voltage VDC, U half-wave Output current I RMS at 4 C, (A),0,8 3,0,0 30 7, Output current I RMS at max. 70 C, (A) Comformity markings,0 0,9,,0 up bis to 300 VV,6 4, 64 4 Accessories: Mounting bracket set for 3 mm rail acc. to EN 00: Article-No. 809 Order Number / , UL-approved to 300 V to 00 V 69

16 ROBA -switch Type Application ROBA -switch fast acting rectifier units are used to connect DC units to alternating voltage supplies, for example electromagnetic brakes and clutches (ROBA-stop, ROBA -quick, ROBATIC ), electromagnets, electrovalves, etc. Fast acting rectifier ROBA -switch Consumer operation with overexcitation or power reduction Integrated automatic DC-side disconnection (shorter connection time) Input voltage: VAC Max. output current I RMS :, A UL-approved The ROBA -switch units with integrated automatic DC-side disconnection are not suitable for use as safety disconnections! Function Dimensions (mm) The ROBA -switch units are used for operation at an input voltage of between 00 and 00 VAC, depending on the size. They can switch automatically internally from bridge rectification output voltage to half-wave rectification output voltage. The bridge rectification time can be modified from 0,0 to seconds by exchanging the external resistor (R ext ). The ROBA -switch units also have an integrated automatic DCside disconnection. In contrast to the conventional DC-side disconnection, no further protective measures or external components are necessary. The DC-side disconnection is standard-activated (terminals 3 and 4 are not wired), resulting in short electromagnetic consumer switching times. The integrated automatic DC-side disconnection is deactivated by fitting a bridge between the terminals 3 and 4. The coil is deenergised via the free wheeling diode. This has the advantages of softer braking and a lower switching noise. However, the switching times increase (taking approx. 6-0 times longer).,6 4 Ø4, , 9 73,6 30 Accessories: Mounting bracket set for 3 mm rail acc. to EN 00: Article-No , Electrical Connection (Terminals) + Input voltage (fitted protective varistor) Switching between DC- and AC-side disconnection + 6 Output voltage (fitted protective varistor) R ext for bridge rectifier timing adjustment Technical Data Input voltage see Table Output voltage see Table Protection IP6 components, IP0 terminals IP0 R ext Terminal nom. cross-section, mm, (AWG -4) Ambient temperature - C up to +70 C Storage temperature -40 C up to +0 C Order Number / ROBA -switch s, Table Input voltage VAC ± 0 % Output voltage 90.. VDC, U bridge.. Output voltage 4.. VDC, U half-wave..3 Output current I RMS at 4 C, (A) Output current I RMS at max. 70 C, (A) Conformity markings ,, 0,7 0,7

17 ON ROBA -multiswitch Type Application ROBA -multiswitch fast acting rectifiers are used to connect DC units to alternating voltage supplies, for example electromagnetic brakes and clutches (ROBA-stop, ROBA -quick, ROBATIC ), electromagnets, electrovalves etc. Fast acting rectifier ROBA -multiswitch Consistently controlled output voltage in the entire input voltage range. Consumer operation with overexcitation or power reduction Input voltage: VAC Max. output current: A ROBA -multiswitch units are not suitable for all applications, e.g. use of the ROBA -multiswitch when operating noise-damped brakes is not possible without taking additional measures. The product s suitability should be checked before use. Function Dimensions (mm) The ROBA -multiswitch units are (dependent on size) used for an input voltage of between 00 and 00. After switch-on, they emit the rectified bridge voltage for 0 ms and then control the 90 or 80 VDC overexcitation voltages. After the overexcitation period, they control the or 04 VDC holding voltages. The overexcitation period can be adjusted via a DIP-switch to 0 ms, 40 ms, s,, s and s. 4 Ø4, , Electrical Connection (Terminals) + Input voltage (fitted protective varistor) Connection for external contact for DC-side switch-off + 6 Output voltage (fitted protective varistor), , Accessories: Mounting bracket set for 3 mm rail acc. to EN 00: Article-No. 809 Technical Data 73,6 Input voltage see Table Output voltage see Table Protection IP6 components, IP0 terminals Terminal nom. cross-section, mm, (AWG -4) Ambient temperature - C up to +70 C Storage temperature -40 C up to +0 C ROBA -multiswitch s, Table Order Number / Input voltage VAC ± 0 % acc. to EN 060 Frequency input voltage Hz Output voltage U over VDC ± 0 % Output voltage U hold VDC ± 0 % Output current I RMS at 4 C ADC Output current I RMS at max. 70 C ADC ,0,0,0,0 0 0 Conformity markings 7

18 Spark Quenching Unit Type Application Reduces spark production on the switching contacts occurring during VDC inductive load switching. Voltage limitation according to VDE , Item 4.6. Reduction of EMC-disturbance by voltage rise limitation, suppression of switching sparks. Reduction of brake engagement times by a factor of -4 compared to free-wheeling diodes. Function The spark quenching unit will absorb voltage peaks resulting from inductive load switching, which can cause damage to insulation and contacts. It limits these to 70V and reduces the contact load. Switching products with a contact opening distance of > 3 mm are suitable for this purpose. Electrical Connection (Terminals) Dimensions (mm) (+) Input voltage ( ) Input voltage 3 ( ) Coil 4 (+) Coil Free nc terminal 6 Free nc terminal Ø3, 34 4, 9 Technical Data 30 Input voltage max. 300 VDC, max. 6 V peak (rectified voltage 400 VAC, 0/60 Hz) Switch-off energy max. 9J/ ms Power dissipation max. 0, Watt Max. voltage nc terminals 0 V Protection IP6 / IP0 terminals Ambient temperature - C up to +8 C Storage temperature - C up to +0 C Max. conductor connection diameter, mm / AWG 6- Max. terminal tightening torque 0, Nm Accessories Mounting bracket set for 3 mm rail acc. to EN00 Article-No Order Number /

19 Guidelines Declaration of Conformity A conformity evaluation for the applicable EU directives has been carried out for this product. The conformity evaluation is set out in writing in a separate document and can be requested if required. It is forbidden to start use of the product until the machine or system into which it should be built is operating in accordance with all applicable EU directives. Without a conformity evaluation, this product is not suitable for use in areas where there is a high danger of explosion. This statement is based on the ATEX directive. Guidelines for Electromagnetic Compatibility (EMC) In accordance with the EMC directives 89/336/EEC, the individual components produce no emissions. However, functional components e.g. rectifiers, phase demodulators, ROBA -switch devices or similar controls for mains-side energisation of the brakes can produce disturbance which lies above the allowed limit values. For this reason it is important to read the Installation and Operational Instructions very carefully and to keep to the EMC directives. Device Conditions The catalogue values are standards which can, in certain cases, vary. When dimensioning the brakes, please remember that installation situations, braking torque fluctuations, permitted friction work, run-in behaviour and wear as well as general ambient conditions can all affect the given values. These factors should therefore be carefully assessed, and alignments made accordingly. Please Observe! Mounting dimensions and connecting dimensions must be adjusted according to the size of the brake at the place of installation. The brakes are designed for a relative duty cycle of 00 %. The brakes are only designed for dry running. The braking torque is lost if the friction surfaces come into contact with oil, grease, water or similar substances. The braking torque is dependent on the present run-in condition of the brakes. Manufacturer-side corrosion protection of the metallic surface is provided. Without a conformity inspection, this product is not suitable for use in areas where there is a high danger of explosion. This statement is based on the directive 94/9/EC (ATEX directive). Please contact the manufacturer separately for brakes in ATEX-design! Protection Class I This protection can only be guaranteed if the basic insulation is intact and if all conductive parts are connected to the PE conductor. Should the basic insulation fail, the contact voltage cannot function (VDE 080). Protection (mechanical) IP4 When installed, protected against dust, contact and splashing water from all directions (dependent on customer-side mounting arrangements). Protection (electrical) IP4 Dust-proof and protected against contact as well as against splashing water from all directions. Protection IP6 (Type 89. _.) Dust-proof and protected against contact as well as against jet water from all directions. Ambient Temperature -0 C up to +40 C At temperatures of around or under freezing point, condensation can strongly reduce the torque, or the rotors can freeze up. The user is responsible for taking appropriate countermeasures. Insulation Material Class F (+ C) The magnetic coil and the casting compound are suitable for use up to a max. operating temperature of + C. 9

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