CSRME safety controller is developed for standard GB27607. By monitoring machine tool safety related equipment, the security of machine control system can meet the requirements of GB27607, and its security meets the requirements of ISO13849-1 (PLe) and IEC61508 (SIL3).
With rich interfaces, CSRME has limited programmable function. It can simultaneously replace many different types of safety control modules or safety PLCs, thus greatly simplifying the safety design of machine control systems and reducing cost.
Safety Controller,Modular Safety Controller,Safety Controller,Electrical Safety Controller,Programmable Logic Controller,Banner Safety Controller Jining KeLi Photoelectronic Industrial Co.,Ltd , https://www.sdkelien.com
Who said that LED is the ideal street light? Yesterday, Liu Lei, deputy chief engineer of Nanjing Street Light Management Office, revealed at the Harmony City, Light and Shadow Future City Lighting Seminar: The performance of LED energy-saving lamps with high voices in China is actually not stable enough. A number of lamps with variable power will be introduced to achieve energy savings in urban lighting systems.
At present, in the domestic streetlight system, LED lights are very loud. Shanghai has to introduce 20,000 baht, and Changzhou has to introduce 15,000 to 20,000 baht. The propaganda is that although the purchase cost is higher than ordinary lamps, it can save electricity and save money. Yesterday's seminar, Liu Lei, deputy chief engineer of Nanjing Street Light Management Office revealed that Nanjing started to test six different LED lights on the Taishan Road in the west of Vanke Bright City in August last year. The performance of the lamps varies greatly, and the lights of the same house also perform differently at different times.
The lamp power of these six lamps ranges from 120W to 168W. Some lamps with a power of 168W are not as bright as 120W lamps. What is even more strange is that after a period of time, the brightness of the two devices rises, the brightness of the four devices decreases, and the length of life varies. .
Since the performance of LED lights is still unstable, how can Nanjing street lamp system achieve energy saving? In this regard, Liu Lei said that traditional street lamps can use energy reduction and power reduction to achieve energy saving. All new street lights in Nanjing will adopt variable power ballasts this year. The device automatically reduces the power after 6 hours of turning on the light, 400W drops to 250W, 250W drops to 150W, and 150W drops to 100W. For example, Longjing Middle Road, where the street lights will automatically reduce the voltage, this year's new projects will all use this power reduction facilities, and more than 2,600 old lights will also be transformed.
The voltage is low, the power is small, will it affect the lighting effect? ​​If the naked eye does not see the moment of changing power, it is not very sensible. Liu Lei said that the lighting brightness and other controls have a lower limit to ensure the lighting effect.
Yesterday, a number of new urban lightings, such as the square carpet lights (the lights are all arranged in the underground glass, the whole is like a carpet), warm white light (whiter than ordinary lights, but feel warm) were unveiled at the seminar. At present, a number of advanced lighting energy-saving technologies, including warm white light and power reduction, have been piloted in Nanjing Huanling Road and Xuzhuang Software Park. Old districts and unlit streets will also be accompanied by new projects. Transformation.
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