DCS Distributed Control System Weifang Sanyou new high-precision electronic belt image dosing ..

Keywords: DCS distributed control system Weifang Sanyou Automation Equipment Co. with the National Engineering Research Center of Industrial Automation, Zhejiang University to establish a long-term strategic partnership with a leading sense of innovation and a wealth of technical resources, responsible for the latest generation of control technology to promote the industrialization and services. Business and products related to: smart meters, programmable controllers, distributed control systems, safety control system, control engineering research and development of application software platform, manufacturing and marketing services. The company believes in "pragmatic, innovative, dedicated, professional" values; adhere to the "talent as a fundamental, market-leading, quality of life, for the purpose of win-win" business philosophy; through technological innovation and market expansion of tempering, the formation of a support structure is reasonable, experienced, forge ahead in unity, courage and hard work and innovation of business management, research and development and engineering services personnel more than 100 people, research and development staff of more than 50 percent have master's or doctoral degree. Relying on the comprehensive advantages of disciplines, Zhejiang University, Zhejiang University, absorbing control engineering laboratories, national engineering research center for industrial automation, Zhejiang University, National Laboratory of Industrial Control Technology, Zhejiang University, the number of industrial control technology research Institute, Zhejiang University decade, with own long-term accumulation of scientific research and technological innovation and its rich experience and engineering breakthroughs through innovation, continuous improvement, after examination, the formation of a high-quality stable, advanced and practical, friendly and open a new generation of master control system --UW500 (UWinPAS500) distribution control system. It has been widely used in chemical, pharmaceutical, oil refining, petrochemicals, iron and steel, energy, building materials, light industry, papermaking, environmental protection and other industries. With high reliability, the system is open, powerful, and easy maintenance features. 1. The control system reliability, availability, maintainability and safety basic theory and application technology research analysis; 2. Based on the fault-tolerant triple modular redundancy configuration of the control device; 3. Control system design simulation and dynamic debugging techniques; 4. Safety Instrumented testing standards system, test specifications, safety assessment studies; 5. Application of control systems in paper making, environmental protection, pharmaceutical, chemical, petrochemical, nuclear power, transportation and other industries. UW500 DCS system configuration diagram 1 hardware redundancy and high reliability design: power supply module hot standby redundancy, dual power input, and over-voltage, over-current protection; control network and systems are used in dual redundant network ; dual redundant control module, zero switching time, to ensure continuity of control; system built all switches and analog input voting algorithm, output voting algorithm, the input and output self-test and fault reporting mechanism, no user programming, as long as configured to automatically configure redundant design; 2. Highly reliable I / O modules: little isolated, little Alternaria, bit distribution, online little replacement nuclear power to meet the emergency stop high reliability requirements for high security areas ; 3. Intelligent design components: I / O modules, I / O modules, control modules, communication modules are equipped with a microprocessor or processor support module self diagnostics, fault isolation, online insertion and removal, line maintenance ; 4. Intelligent conditioning technology: Supports analog (voltage / current / RTD / thermocouple) Universal input, software configuration type, full scale accuracy, lossless digital transmission, self-diagnosis self correction, adjustment-free maintenance-free; 5. EMC design: Anti-fast transient pulse group interference, signal terminal 1000V, power terminal 2000V; radio interference suppression, the transmission power 5W /0.5m; low power design, no need for forced cooling; 6. Run the safety design: real-time data out power to maintain, redundancy check, fast recovery, to ensure information security; 7. Manufacturing Quality control: Strict components purchasing, inspection, aging, screening; parts high-temperature aging 72 hours; continuous operation of the machine fully tested and assessment 120 hours; strictly follow the international "ISO9001 quality assurance system", implemented in the system design, development, development, production and service process. 1. Open a full range of open system design, support ActiveX, OPC, ODBC; providing a direct interface to the database used by the MIS; OPC specification fully realized; provide OLE Automation server interface, DDE data exchange interface, driver interface to system-round open to the user, allowing users to extend the functionality and personality to play; 2. configuration language to IEC61131-3, including Function Block Diagram FBD (Functional Block Diagram), Ladder LD (Ladder Diagram), SFC, Structured Text ST (Structured Text), IL, etc; 3. based on a modular system hardware, open software platform of specialized application software for flexible integration can be transverse or longitudinal expanded as needed; both for the chemical, pharmaceutical, building materials, light industry, chemical fertilizer, urban construction and other industries in the control of small devices can also be used to control the electric power, petroleum, metallurgy and other industries in the pilot plant and the joint unit. 1. Support powerful integrated development environment with off-line, online programming, real-time support global unified project database, support database online editing, deleting, adding; 100000 real-time data, historical data 100000; support the massive historical data records, to support trends conduct, statistics, data analysis components and other causes of abnormal scene analysis; 2. Support the control strategy online configuration and on-line debugging, support for single-cycle algorithm with single-step debugging; support simulation-based virtual control station for test control strategy. Easy maintenance 1. IO module configuration combinations industrial terminals group, canceled cage, cage bottom, terminal block and connecting cables inside the chassis interconnect standardized, so that "service begins Terminals", user-friendly and maintenance; 2. Support module, module, network self-diagnosis, the module can be hot-swappable, online repair, easy to maintain; 3. modular intelligent, versatile, small type, easy maintenance, eliminating configuration waste, reduce spare parts; 4. analog input type and digital input and output mode software settings, convenient selection, modification easy; 5. remote technical support, to provide timely guidance system quickly, training and maintenance services. Network Architecture Overview UW500 distributed control system uses a three-tier network architecture, namely the management network MNet, system network SNet, control network CNet. CNet connecting the various functional modules; SNet using industrial Ethernet, you can connect multiple sets of control station, or more operating stations / engineering station, and can be connected to MIS / ERP by MNet. UW500 distributed control system network structure to manage network devices to achieve coordinated control different elements or workshop between data communications; manage multiple sets of data communications devices within the enterprise or the production process; large-scale industrial process control coordination between the various subsystems and scheduling management. Distributed control system network is UW500 real-time industrial-Fi system engineer station, operator station and field control stations and other nodes. Data transfer field control station, operator station and each other, to maintain data consistency. Industrial Ethernet network using the system, in line with IEEE802.3 standards; high reliability Redundancy structure, can guarantee in the case of failure of any one network does not affect system communications. System Network maximum communication distance and hub / Optical number and use of communications media related. The maximum length of each twisted pair of 120m, the maximum length of each fiber is 1850m. Network hardware involved are operating station / engineer station, control station, hub / Optical and transmission media, network design system maximum number of nodes is 64. Wherein the operator station / Engineer station 32, a field station 32. Control network is redundant internal use real-time network control stations, the Internet and information between the control station to achieve internal I / O module and the control module delivery. Control network nodes up to 64 points. Communication network charged with transfer of process variables, commands, configuration performance performance, alarms and historical data and other tasks, in the form of network structure, hierarchy, flexibility, openness and the way in areas such as transport, largely performance of the whole system plays a decisive role. MNet MNet management network management network using Ethernet, achieve plant-wide information delivery and management is to achieve integrated management of the whole plant information channel. Its functions are as follows: 1. Data Services software from running operator station (or dedicated servers) obtain the system parameters and system processes information, and delivery schedule instruction upper management computer and information production guidance downward; 2. enterprise manage multiple sets of data communication equipment or production processes; coordinated control and dispatch management 3. Large industrial processes between the various subsystems; 4. plant-level integrated management, scheduling, statistics and decision-making. Management Network MNet key performance indicators for the Ethernet network topology tree, star and other communications media twisted pair, fiber optic, coaxial cable is not redundant redundant communication speed 100M / 1000Mbps network protocol TCP / IP, NETBEUI and other node capacity Maximum 1024 communication from the maximum 10km (transmission medium related) system network SNet. System Network Overview System Network is dual redundant high-speed, real-time industrial Ethernet, it is directly connected to a distributed control system scene control station, operator station, engineer station and data communication modules, etc., it is the control channel transmission process real-time information, real-time and with high reliability. It may be connected by hooks on which data communication components with other vendors control system or intelligent instruments, but also by running data services software, operator station or dedicated server to process control information is sent to the top of the Information Management Network. System network mainly to complete the following basic functions: 1. scene control station transmit live I / O data acquisition to the operating station; 2. The data transfer between the site controller to meet the needs of a wide range of coordinated control; 3. The operator station and Engineer station transmit control commands to the field station or configuration data; 4. to maintain data consistency between the various operating stations. System Network basic performance characteristics of the system and the network of communication media, switching equipment, network adapters, and so are dual redundant configuration, for both network redundancy configuration network we are called A and B network. When the site sends data, and send to the two lines, the receiving station is based on the time stamp and quality flag of the received packet, determining selection of redundant data packets. Not only avoid the situation can not receive the data when the network fails staggered line, and when it is not normal network returned to normal, the system requires little recovery time can resume normal communication. Real-time information delivery system network is based entirely on the UDP / IP protocol. UDP protocol is the most simple, connectionless transport protocol in the communication process, UDP protocol not only reduce the enormous cost of the connection by the establishment and revocation connections required, but not acknowledged and retransmitted data, thereby greatly improving the transmission rate. System network based on UDP protocol, extensive use of multicast and broadcast technology to further greatly reduce the network traffic load. For data transmission, UW500 Distributed Control System SNet network driver also provides flow control, error control, automatic retransmission packet transmission time sequence checking and packet inspection and other quality marks ensure reliable data functions. Therefore, the system network UW500 fully distributed control system ensures process information efficiently and in real-time, reliable delivery, and to ensure that communication will not be overburdened and paralyzed industrial Ethernet-based system network. System Network SNet key performance indicators types of industrial Ethernet network topology or star bus communication medium twisted pair, fiber optic or coaxial cable (thin cable) Communication control in line with IEEE802.3 standard protocol, in line with UDP / IP, TCP / IP protocol is redundant redundancy (dual redundant) communication speed 10Mbps / 100Mbps node capacity up to 64 site controller or data communication components, 32 operator stations / Engineering Station maximum communication distance 10km (transmission medium related) System Network network equipment hardware engineers involved in system network station, operator station, site controller, data communication components, Ethernet switch / fiber optic transceivers and communications media. (1) communications media and devices according to the size of the system's configuration, as well as the spatial distribution of traffic and so on, select the appropriate communication media and network connections: System scale communication media and equipment 0m≤ node spacing ≤100m twisted pair, switch node 100m≤ ≤185m station spacing distance is less than 100 meters, the operator station with the switch using twisted pair (with BNC interface), equipped with BNC interface on the switch at a distance greater than 100 meters at the site, using a coaxial cable (thin between switches cable) is connected. ≤500m station 185m≤ node spacing distance is less than 100 meters, the operator station with the switch using twisted pair (with AUI interface), AUI interface on the switch is mounted at a distance greater than 185 meters at the site, between coaxial switch cable (thick cable) connected to the optical fiber and can also be used to connect remote site transceiver or switch. 500m≤ station node spacing distance is less than 100 meters, the operator station is connected to the switch using twisted pair, fiber optic and re-use transceiver connects remote sites or switch. (2) Operating station / Engineer station and data communication components of the network adapter operator station / Engineer station and data communication system components for the Ethernet network adapter cards, because the system network is redundant and therefore require two Ethernet cards. If the engineer station, operator station also need to manage the network connection, you also need a separate Ethernet card. (3) field control station site controller controls the network adapter module integrates two SNet UW5101 network controller and two CNet network controllers, and built-in 5-8 way CNet hub or switch, easy to connect I / O module member. System Network SNet node address set on the system network SNet, site controller is connected (control module), operator stations, engineering station nodes. For the IP address of the network device is set, the following convention: Type IP address range Description Network Name A network control station network station address 192.192.1 2 to 127 users can control module DIP switch settings Network Address B network 192.192.2 2 to 127 operating stations / Engineer station network 192.192.1 129 to 192. A user settings in the operating system IP address B network 192.192.2 129 to 192. For the operating station / engineering station, set the corresponding IP in the operating system address. As for the control module, which needs to be set by the DIP switches on the floor, its low 7 (D6 ~ D0) is used as the station address control module, the use of which seven bits which can be composed of 2 to 127 station address between the control network control network overview CNet control network is a network site controller for internal use, to achieve interconnection and transmission of information between the various field control station inside I / O module and the control module. Physically located on-site control network control station under the jurisdiction of I / O modules between. Control network performance and characteristics of the basic control network using CAN (Control Area Network) fieldbus, in line with ISO11898 CAN Specification 2.0B standard, it is a priority preemptive bus network, which has the following characteristics: 1. Multi main work , the network took a node can send its own initiative to other nodes on the network information, regardless of master and slave, and flexible means of communication, and without address, node information, can easily constitute a multi-machine backup system at any given time; 2. Network node information into different priority, to meet the different requirements of real-time, high-priority data transmission up to get within 134us; 3. the use of non-destructive bus arbitration technology, when multiple nodes simultaneously send information to bus priority lower-level nodes will take the initiative to withdraw send, and the highest priority node can be affected to continue to transmit data, thus saving the bus collision arbitration time. Under heavy network load conditions and will not appear network paralyzed situation; 4. point can be realized only through packet filtering, multipoint and global broadcasting methods to transfer receive data, without special "scheduling" ; 5. Use short frame structure, transmission time is short, low probability of interference with excellent error detection results; 6. Each frame has a CRC checksum error detection and other measures, the data error rate is very low; 7. node In the case of a serious error with automatic shut output, so that other nodes on the bus are not affected; The communication medium can be twisted pair, coaxial cable or optical fiber, choose flexible. CNet's primary control network performance network type CANBUS 2.0B fieldbus topology twisted pair communication medium bus CANBUS extended communication control protocol is redundant redundancy (dual redundant) communication speed