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Draw-wire displacement converter SWL

Draw-wire displacement converter SWL
2Pages

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Draw-wire displacement converter SWL - 1

Cable-type displacement converter SWL series for use with absolute and incremental encoders ■ Very robust construction for mechanical engineering and industrial plant application ■ For converting linear displacements of up to 60 m into a rotary movement ■ For mounting onto an absolute or incremental encoder ■ Easy to install and to use ■ Protection grade IP 65 with exception of cable entry slot Functional description The linear movement of a flexible steel cable, which can have a length of up to 60 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. Technical data ■ Measuring ranges: ■ Drum circumference: ■ 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 of cable and spring: ■ Housing material: ■ Spring housing: ■ Working and storage temperature range: ■ Protection grades: ■ Mass □ SWL 50: □ SWL 60: 50 and 60 m 491.5 mm nom. < 2.0 m/s at 20 °C < 4.0 m/s2 at 20 °C 15 N max. / 30 N max. highly flexible, stranded wire, 1.35 mm (0.80 optional) > 106 cable strokes anodized aluminium aluminium, varnished -20 °C to +70 °C -30 °C (optional) Housing IP 65 Cable entry IP 54 15 kg 18 kg 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 TWK-series of digital, incremental and analogue encoders with 58 mm dia synchro flanges can be mounted onto SWL-converters: CR, KR, DAF, TB, TM, GIO and GIM. Technical descriptions of such encoders are available as individual data sheets. The following accessories can be supplied: □ Prolongator SWF-VX for cable. □ Adapter rings for encoders with the following mounting flanges: 50, 65, 66, 90 and 105. For use under aggressive ambiant conditions, e.g. in maritime climate, the convertes can be supplied with a protective anodised hard coating. Order code format SWL 50 - 01 Basic version for model No. 58* Measuring ranges: 50 = 50 m 60 = 60 m -Model SWL * Variations from the basic version are indicated with a succeeding, additional number and are documented in our works.

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Draw-wire displacement converter SWL - 2

Cable-type displacement converter SWL Guide slot for cable 34,5 Cable with ring Guide slot for cable 34,5 Lateral movement of cable Cable with ring Cable with ring Lateral morement of cable Cable with ring

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Draw-wire displacement converter SWL 2Pages

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Draw-wire displacement converter SWL
2Pages