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), 11ms duration