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KTS Korea
Swing Angle Dector(SIRRAH)

Swing Angle Dector(SIRRAH)

SIRRAH is a sensor giving angle positions of a hoisting system fitted with an infrared transmitter : to use or sway and skewmeasurement. The coordinates are evaluated as plus or minus relative to the axis of  the detector. In its LS08 version, SIRRAH is improved for applications on container cranes of small height : sway measuring and load positioning on ground. It is waterproof and insensitive to the ambient infrared.  


SIRRAH, fixed on the crane’s trolley, analyses the beacon position fixed on the hoist. It is the sway sensor function or positioning sensor X, Y of a load. Its high speed of measure enables itself to enter in a sway readjustment loop.
If the spreader is fitted with two infrared beacons and the trolley with two SI08, the crane computer can also regulate the skew movement of the load. 

Sway & Skew 



SIRRAH is presented in a monolithical way, in a box including optics, electronics and the processor for the measurement control. A calculator or a PLC (not provided) can be directly connected to SIRRAH to enable the use with several softwares. SIRRAH is associated to one or several I.R. beacon to put on the spreader. It is independent from the sensor and synchronises itself automatically on SIRRAH.

Works Reference


     > Sway


     > Sway


  • Working range : Up to 25 m

  • Saturation distance : Down to 2 m

  • Measurement frequency : 
    Up to 200Hz in mode 1 “mono beacon”: anti-sway function and X, Y positioning 
    Up to 60 Hz in mode 6 “bi beacon” : anti-sway, twist and X, Y positioning

  • Output frequency : Programmable by the outside calculator

  • Average of measures : Programmable by the outside calculator

  • Detector type : Optical : View angle of  +/- 7°
    Narrow band interferential filters

  • Infrared source : 880 nm LEDs beacon

  • Communication : With a serial line computer : RS422 or RS232 or PROFIBUS

  • Power supply : 220VAC / 0,2A or 120 VAC / 0,4A   or 24VDC 50/60 Hz

  • Environment :Working temperature : -20°C to  +50°C

  • Storage temperature : -40°C to +70°C

  • Protection : IP 54 / SI08 : IP 65

  • Weight : About 2,6 Kg

  • Dimensions : About  120 x 120 x 260 mm

  • Notes : All the results are given in R.M.S. values at 20°C

  • Software : functioning mode choice : 1, 6, 7 / Angular speed option choice

  • Display : One Red LED & one Green LED on SI08


Optical filtering of undesirable waves, by narrow band interference filter  (40 nm) Analog signal and numerical filtering Numerical position calculation and non linearity compensation of the electrical and optical sets 


LS08 SIRRAH sensor +/- 7°      

SI08 LS08 sensor included in BO35 protective housing + SCB13 cable + SCB4 cable

LS08-P/SI08-P LS08 sensor with Profibus interface

LS08-D/SI08-D LS08 sensor with 24VDC Supply

SCB4 Power supply cable 220 VAC

SCB5 Power supply cable 110 VAC

SCB6 Power supply cable 24VDC

SCB13 RS422 cable

SCB14 RS232 cable


Associated beacon: Ref. BMU-02 (modes 1,6,7)

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