The application of Pilz safe grating

The critical point that the photoelectricity protector such as smooth act of PSENop2/4 series safety and grating uses at protection to need active intervention in producing a course and dangerous area. Grating of PSEN series safety accords with current international level, design to defend 2 class mix grade 4 class, the standard is: EN 61496-1:1The safety of 997 machines: Photoelectricity protects facility. The first part: Current requirement and test. PrEN 61496-2:1The safety of 997 machines: Photoelectricity protects facility. The 2nd part: Use photoelectricity protects the special requirement of equipment. The equipment such as safe grating is comprised by transmitter and receiver, will determine the height of groove guard and breadth by the infrared ray of generation. Have respectively in two equipment control and evaluate logic; Through be located in grating bottom M12 connector achieves electric join. Transmitter and receiver are optical synchronism, because this need not join directly each other. Infrared beam of light comes by microprocessor control and monitoring, show operation state through LED at the same time. Two yellow LED can make grating is opposite simply when installation neat. Once an object, the body of operator disturbs the beam of light that shoots by transmitter, OSSD output arrives by tall n switch instantly low n and dangerous area motion is shut. One, when how choosing safety 　 to should choose safe grating, 3 kinds of typical character need a consideration: ＊ resolution: The resolution of the place grating that needs protection according to the body (R) it is the least dimension that the inductive division that shows the object can make be formed by place of a beam of light at least pales. If the graph shows 1 times: Resolution is apart from according to diameter and center wait for geometrical character to decide; With grating exterior reach operation condition to have nothing to do graph 1 　 resolution can reach by the following formula: 　 of height of groove guard of ＊ of 　 of 　 of R= I + D is divisional " inductive division height " and " groove guard height " it is very important 　 　 - inductive division height is the first bundle of beam of light on the edge arrives the distance of next edges of last bundles of beam of light. - groove guard height is to point to effective groove guard region, the dimension of the object is more than the resolution that is equal to grating, can make beam of light pales surely so. The safe distance that ＊ safety is apart from 　 safe device should be operator cannot touch dangerous area, till portable dangerous machine completely dormant. (if the graph is shown 3 times) 　 basis EN999, 775 with 294 standards, the distance comprises by 4 elements: 1. ESPE answers time 　 　 2. Of the machine spill over time 　 　 3. The resolution 　 　 of ESPE 4. The approachs safety of computation of speed Nextpage 　 to be apart from formula that the object needs to detect is: S = K (T1 + T2) + the safe space with groove guard of S = of 　 of C 　 and dangerous the least interval (Mm) the approachs dangerous area rate that object of 　 　 K = needs to detect (Mm/s) 　 　 T1 = ESPE answers time>The safe device 　 of 40mm notices: K value is: 2000 Mm/s, if the computation of the distance is worth ≤ 500 Mm, 1600 Mm/s, if the computation of the distance is worth>500 Mm. If enter dangerous area from upside or bottom likely (if pursue 3) and the resolution of used device is>40mm, the beam of light of the edge must place the height in 900mm on (H2) , from referenced plane (or the bottom of the machine) begin, the beam of light of next edges must place the height in 300mm (H1) . Grating must install the place in the level (if pursue 4) . The distance computation of dangerous area and farthermost beam of light is equal to following formula: S=1600 Mm/s (T1+t2) + 1200 – 0.

The T1 = ESPE of the smallest 　 of safe distance 　 between groove guard of S = of 　 of 4H 　 and danger danger zone answers machine of T2 = of time 　 　 spill over the height of beam of light of upper part of floor of H = of time 　 　 , this height at least 1000mm 　 2, grating can use security of typical series of PSEN Op 2/4 of applied area 　 at all must control the automation that enters dangerous area to control area. Special use at checking the danger of mechanical part moves: - robot 　 - pack, processing and storage machine 　 - spin, carpentry and 　 of machinery of treatment of pottery and porcelain - the give typical examples that automatic or semi-automatic assembly line is main application domain under 　 : CNC Milling