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Draw-wire displacement converter SWG

Draw-wire displacement converter SWG
5Pages

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Draw-wire displacement converter SWG - 1

Cable-type displacement converter SWG series for use with absolute and incremental encoders n Very robust construction for mechanical engineering and industrial plant application n For converting linear displacements of up to 40 m into a rotary movement n For mounting onto an absolute or incremental encoder n Easy to install and to use n Protection grade IP 65 (IP 54) Functional description The linear movement of a flexible steel cable, which can have a length of up to 40 m, is converted into an rotary movement with the aid of a measuring drum. The measuring drum is connected to the shaft of an encoder. In this way a change in displacement of the measuring cable causes the shaft of the encoder to rotate by a directly proportional amount which can be recorded. The restoring force of the spring drive holds the measuring cable tight at all times and prevents any sagging which would otherwise induce an error. The measuring drum moves axially on a spindle ensuring that the cable is wound up precisely and reproducibly wrap for wrap in the helical groove of the drum. The nozzle, through which the cable enters the drum, is protected with a brush and a bellow to prevent water or dust entering the drum. An additional grease chamber can be fitted upon request. TWK-ELEKTRONIK GmbH Heinrichstrasse 85 info@twk.de www.twk.de

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Draw-wire displacement converter SWG - 2

ref. to table page 4 ref. to table page 4 15 N max. / 30 N max. highly flexible, stranded wire, 1.3 mm (for 15 to 25 m), 0.80 (for 30 to 40 m) > 106 cable strokes anodized aluminium plastic -20 °C to +70 °C -30 °C (optional) Housing IP 65 Cable entry IP 54 ref. to table page 4 ■ Permissible cable speed: ■ Permissible cable acceleration: ■ Force required to draw out the cable (start / end): ■ Cable material and diameters: (Stainless steel 1.4401) ■ Life exspectancy for cable and spring: ■ Housing material: ■ Spring housing: ■ Working and storage temperature range: ■ Protection grades: ■...

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Draw-wire displacement converter SWG - 3

SWG 20 B FK 01 01 Basic version for model no. 58* 03 Basic version for model no. 65 08 Basic version for model no. 50 FK Grease chamber (optional) Accessories (optional): B with bellows (standard) U with deflection roller Measuring ranges: 15 15 m SWG Cable-type displacement converter * Variations from the basic version are indicated with a succeeding, additional number and are documented in our works. Encoders in connection with cable-type converters Generally encoders and converters are supplied as one unit. Upon request both items are also available as separate units. The following...

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Draw-wire displacement converter SWG - 4

Mounting position The F1 threaded holes at two faces permit to adjust the position of the cable exit to suit the requirements in situ. Note: The cable exit should be downwards or sideways. The cable must be extracted rectilinearly with reference to the housing (no lateral deflection admitted). Date: 04.02.2015 Page 4 of 5 Document no. SWG 11243 DD

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Draw-wire displacement converter SWG - 5

Cable-type displacement converter SWG Structure principle Flange and intermediate housing for reception of the encoder. Robust drum housing of die-cast aluminium Spring housing of plastic Absolut or incremental encoder. The position for the electrical connection (by plug or cable) can be varied by selection of the angle at which the housing of the encoder is mounted on the flange of the SWF. Precision measuring drum Zero-play coupling Accessory: Wear-resistant bellows providing protection against dust and moisture Accessory: Deflection roller for cable

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Draw-wire displacement converter SWG 5Pages

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Draw-wire displacement converter SWG
5Pages