Overview Modular PLC S7-300PLC medium systems to meet in small-scale control performance requirements of various modules can be very good to meet and adapt to automation control tasks simple and practical distributed architecture and versatile networking capabilities, making the application is very flexible and no fan-designed structure, so that the user's maintenance easier when the control task increases, Scalable lot of integrated features make it a very strong function of the S7-300 General technical specifications Protection class: IP20, in line with IEC60529 ambient temperature Horizontal installation: 0 60oC vertical mounting: 0-40oC Relative humidity: 5-95%, non-condensing (RH class 2 according to IEC61131-2) atmospheric pressure: 795-1080hPa isolated 24VDC circuit: Test voltage 500VDC 230VAC circuit: Test voltage 1460VAC comply with EMC Electromagnetic Compatibility procedures require noise suppression, in line with IEC61000-6-2, tested in accordance with: IEC61000-4-2,61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-6 radiation interference comply EN50081- 2 tested in accordance with EN55011, A Class, Group 1 Mechanical rating: IEC60068, Part2-6 / 10up58Hz; vibration test conditions are met: constant amplitude 0.075mm; impact test compliance with: 58-150Hz; constant acceleration of 1g; vibration cycle: three each direction mutually perpendicular axes, each axis 10 of vibration cycles. IEC60068, Part2-27 / half-wave: the impact strength of 15g (peak), the duration of 11ms Beijing-day extension Quartet Technology Co., Ltd. About Beijing-day extension Quartet Technology Co., Ltd. is located in Beijing Fengtai headquarters base, founded in 2003, employs nearly 200 people, including college education accounted for 70% of the 15 senior Siemens Automation and Drives Group's core distributors (an agent) and system integrators. After 10 years of development, relying on high-level talent team, abide by the principle of "to provide users with the best service, value-added services" to the customer's success as the standard, the company has been recognized as the industry is the fastest growing and most promising Siemens core distributors and powerful implementation of the project company. For fast, efficient customer service, the company has set up in Tangshan, Xi'an, Zhengzhou, Taiyuan, the nine offices, has become a field of automation and electric drive research and development, project implementation, product sales and technical services, training, consulting high-tech enterprises. The company's strong R & D team, with sufficient capacity to provide our clients with design, project sets, technical advice, training and other services, and the ability to provide fully integrated automation solutions and value-added services based on customer requirements. Especially industrial network communications, programming, host monitoring, hardware debugging, etc. leading domestic technology. Over the years together with Siemens in the field of development of metallurgy, electric power, petroleum, chemicals, lifting, irrigation, municipal, transportation, and other supporting materials, Siemens A & D products, and achieved remarkable results. Meanwhile perennial with large inventories, relying on advanced SAP information management system and efficient logistics management system that can quickly meet customer needs. We focus on improving the level of Chinese industrial control, and promote Chinese industrial enterprises in the world's leading production technology. We always believe that "customer focus, providing customers with the best value," is a long-day extension to select people to compete in a market economy tide Wing Lap invincible. We will adhere to such a choice, and the sustained efforts to this end, let us focus on all customers.