Low Voltage General Purpose Brake Motors

Mechanical design Degrees of protection The degrees of protection, as per IEC standards Mechanical parts ot the brake, protected with a rubber 60034-5, are: terminal box and electrical components ring and V-ring - IP 55 (optional: variant code 213). of the brake - IP 55; other motor parts - IP 55. Mechanical components of the brake - IP 23 S. Mounting arrangements of brake motors The design of the brake motor enables it to operate in any mounting position. Nevertheless, the position of the drain holes should be taken into account. Vertically mounted motors with the shaft end downwards, intended...

Brake design General Electromag nette dise brakes work by the action of a set ot spnngs and are released when apptying voltage to the brake coil. This means that the motorwill brake automatically in case of any voltage failure.as a significant safety feature. The brake isatways functional, irrespective of the mounting position of the brake motor. The extemal dimensions for both the DC and the three phase AC brake are identicaL Detailed view 1 Rectifier (DC brake only) 2 Motor N-end shield 3 Screw 4 Brake dise 5 Dust protection (optional) 6 Armature 7 Hand release 8 Hand release bellows 9 Air...

Replacing the brake dise Rectifier The brake dise must be replaced when reaching the minimum permissible lining thickness stated in Table 1. The rectifier is a device for DC brake applications. It is highly rsistant to temprature as well as to voltage peaks, and it includes an additional protection of the auxiliary contact of contacter Us compact design enables it to be placed in the motor terminal box. Connection for DC brake The brake is fed via a rectifier. The voltage stated on the brake rating plate is that of the brake coil on the DC side of the rectifier The coil can operate reliably between...

Hand release The device is a lever used to override the action of the brake springs for as long as it is applied. Hand release is included as standard» except for frame size 63, where it is available as option, see variant code 088. When installing the release lever» piease proceed as follows: Rernove the rubber protection, if fitted. Insert the screw (1) with ils washer, position the spring (2) and washer (3) and tighten the nut (4) firmly. Rt the other washer and the square-head nut (5); adjust the position of the nut in relation to the moving magnet (Y value) with the central screw (1). When...

Brake operating times The operating times stated in brake data table 2 are valid for the nominal air gap and warmed-up brake coil t, = Brake release time. tj, = Braking time, U2 = Rated voltage. TB = Nominal braking torque, Brake release time = the time trom when voltage is applied to the brake coil up to the ceasing of braking action* Braking time = the tirne from when the current is switched off up to the startlng of braking action. : r / ■ti Spcial brakes (with DC brake) Two-speed motors with one ortwo windings, motors with 9 or 12 terminais, and motors that have to be started with star-delta...

Brakedata tables Table 1. Brake motor size 63 A/B 71 30 90 100 112 132 160/180 2p 4-8 p Brake type 75.5 88.6 100.6 120.6 140.6 155.6 170.6 206.6 Rated torque * 7.5 10 24 35 44 86 130 200 230 Deiivered torque (Nm) 4 8 21 30 38 72 120 130 200 Nominal air gap X(mm) 0.2 0.2 025 0.35 0.4 0.4 0.4 0.4 Minimum permissibte brake dise ihickness (mm) 3.5 3.5 5 5.5 6 6 7.5 8.5 Recorrimonded aJr gap readjustment \(mm) 0.5 0.5 0.6 0.7 0.8 0.6 0.8 0.9 Ihickness of new brake dise EJmm) 5.5 6 75 8.5 9.5 9.5 11 13 Tightenmg torque: boit C.(Nm) 6 6 12 12 30 30 30 50 input cort: - AC brake motor - DC brake rro'.or...

Maximum number of connections per hour The connection frequency that may be achieved with the motors is limited by the temperature rise that they undergo both in the coil and in the rotor. The brakes are designed so that they may withstand the kinds of duty for which these motors are intended. The maximum number of connections per hour depends on: - the power P2 required after reaching the rated speed, i.e. the relative load P with regard to the rated power P . P = -P2 x 100 % n - the total inertia J in kgm2 of the mass to be accelerated (inertia of the rotor Jm as per catalogue, plus the additional...

Ordering information When placing an order, please state the following minimum data in the order, as in the example. The product code of the motor is composed in accordance with the following example. Motor type M3ARF 112M Pole number 4 Mounting arrangement (IM-code) IM B3 (IM 1001) Rated output 4 kW Product code 3GAR112401-ADE Variant codes if needed Brake information A B C D,E,F, G A Motor type M3VRF/M3ARF (DC brake) M3VRS/M3ARS (AC brake) Motor size Product code D Mounting arrangement code E Voltage/frequency code F Generation code Variant code M3ARF 112 M 3GAR 112 401 - ADE, 088 etc. B C...

General purpose brake motors in brief, basic design Motor s120 B3A/B BB 71 80 90 100 112 132 160 180 Stator and feet Matenal Die-cast aluminum aloy Loo5efeet in sizes 63MA/MB-1C0 and 180; feet integrated with stator In sizes 63A/Bt 112-160. Paint cotour shade Paint Munsell blue 8B 4.5/3.25 / NCS 4822 BOSG / RAL5014 Exoxyporyesterpowderparrt, >ao\m. 12-packpolyurethan* palnt, >20pm. Bear in g end shields Matenal Die-cast aluminum alloy Paint cotour shade Paint Munsell blue 8B 4.5/3.25 / NCS 4822 B05G Epoxy polyester powder pajnt. > 30 pm. 2-pack poryurethane paint, >20pm Ranges Matenal Die-cast...

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