1. design principles In order to achieve controlled technology to improve production efficiency and product quality. 1. selection of PLC should not only meet the requirements of specification, you should also focus on technical support and after-sales service of the company's products. (Choose product) 2. to meet the control requirements of the controlled object. 3. meet the requirements of … Continue reading PLC control system design of the basic principles and main contents

Linear programming Division of programming and structured programming (industrial mixing system).Objects that are mixing requirements are as follows:1. When component a (b) pump when required: 1) components of a (b) inlet valve has been opened, discharging valve is open; 2) mixing bucket is not full, the mixing valve closed; 3) the pump drive motor failure, … Continue reading Structure design of PLC control system

Application system design 1. PLC control system typeF composed of PLC control system.F-centralized control system made of PLC.F composed of PLC distributed control system.F with PLC remote I/0 control system. 2. System operation modeF manual operation mode.F semi-automatic operation.F automatic operating mode. B system hardware design under 1. Technological requirements2. Equipment status3. Control function4. I/0 number and type5. Advanced … Continue reading PLC control system design methods

One, from space radiation interferenceSpace radiation electromagnetic (EMI) consists mainly of electrical equipment for power network, transients, lightning, radio, television, radar, high-frequency induction heating equipment, often referred to as radiation interference, its distribution is extremely complex. PLC systems in the RF field, it ***** to radiation interference, its influence through two paths; one is directly … Continue reading What sources of electromagnetic interference in PLC control system