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.

USE

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)

PRESENTATION

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

SIRRAH

> Sway

SIRRAH

> Sway

TECHNICAL SPECIFICATIONS

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

OPERATING SPECIFICATIONS

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