FACTORY OF ELECTRIC APPARATUS EMA – ELFA Sp. z o.o. st Pocztowa 7, 63-500 Ostrzeszów, PL phone: +48 62 730 30 51 fax: +48 62 730 33 06 [email protected] ELECTROMAGNETIC DISC BRAKES 2H2SP…BT SERIES WITH CONSTANT BRAKING TORQUE (so far offered as 2HPS…BT) THEATRICAL VERSION SCENE TECHNIQUE

The lifting mechanisms are used mechanical brakes - disc brakes electric loosened spring applied brakes developed based on 2H2SP. Designed for use wherever the drive from a restricted level of noise. The specificity of this type of drive meant that we developed a version of the brakes, the trouble spots have been redesigned so that the requirement imposed by the quiet work has been met. Drives equipped with brakes 2H2SP...BT can be used in places where a limited level of noise is of great importance, such as theaters, concert halls, where a scenic drive devices meet the stringent safety requirements....

d - standard geared bushing hole diameters d smax - maximum geared bushing hole diameters d* smax - at extra charge it is possible to manufacture the brakes with the specially increased diameter of the gear hub ** -for the 2H2SP112BT and 2H2SP132BT brakes and for the geared bushing hole diameters from 32 to 35mm, the key groove with the width of 8 mm (the width of the groove is incompatible with PN/M-85005 and DIN 6885 standards) K-EN-2H2SP...BT-20151203Geared bushing hole diameters Normalized hole diameter ranges Type Hole diameter [mm]

Brake cover Mounting flange | Lever for manual release | Lid Lid Lid with a hole Lid with a hole without a hole with a hole and a sealing ring and special packing ELECTRICAL EQUIPMENT A number of modules, ranging from simple circuits with classic designs, to complex assemblies ensuring quick action and drives positioning have been designed to drive the brakes. Relevant brake applications with switching in the primary or secondary circuits are ensured by half- or full-wave rectifiers and fast electronic circuits. The manufacturer recommends to use as low alternating current voltages...

Rectifier B2-2P The B2-2P rectifiers series forms a complete full-wave rectifier unit for direct installation. The terminal strip provided facilitates installation and connection to the circuit. The rectifier allows feeding input voltage max. 400VAC, 2A which after rectification provides DC voltage of value equal to 0,9 input voltage. Rectifier B2-2P cooperates with brakes 2H2SP63BT + 2H2SP200BT. For example Maximum input voltage (alternating voltage) - Uin = 230VAC, The resulting output voltage of the rectifier (direct voltage) - 0,9Uin= 0,9 x 230=207VDC Rectifiers dimensions B2-1P-600, B5-1P-600...

Circuit PS-1 is built on the basis of MOSFET type semiconductor technique which enabled achieving effects not available in traditional designs. The brake electromagnet energized through circuit of this construction enables the brake to achieve connection and disconnection time parameters analogous to breaking of circuit on direct current side. The parameters obtained are not however gained through utilization of additional electrical circuits and switches. Simplicity of installation and parameters achieved enable very wide application, particularly in cases requiring positioning of drives, operation with...

CONTROL AND SIGNALING CIRCUTS - microswitches Having in mind the user who requires the control of the brake, we have designed special signaling and control circuits, which enable to control the state of the brake (engaged, disengaged) and the wear of the plate lining. The usage of these circuits enables to control the brake with the use of automatic elements, which ensure high level of safety and reliability. Due to its compact design, the microswitch can be used in any other applications, as long as its parameters meet design requirements. Response monitoring microswitch brake - KZ - control...

PROTECTION RATING The producer reserves the right to modify as a result of developing the product. It is possible to realize special versions. H 03