Description
- 32-bit DSP digital control mode
- Low vibration, low noise, low power consumption
- Maximum output current 3A/phase
- Adopting CAN bus and supporting standard CANopen communication protocol, it can load up to 127 devices
- Supports three modes: protocol position control, speed control, and periodic position control
- Current setting, subdivision, motor start stop control, and real-time monitoring of motor operation can be achieved through the bus
- 2-channel optoelectronic isolation programmable input interface
medical equipment, various types of robots, robotic arms, automated production lines, and various CNC machine tools.
S800 I/O can communicate with higher-level control systems through Profibus DP or ABB AF100 fieldbus. At the same time, it can be connected to ABB transmission equipment, and the module status can be displayed such as status display. It can also be remotely diagnosed through fieldbus. The data scans the I/O module through the field bus at a certain period, and the scanning period is set to 4-108ms according to the module type. S800 I/O has full redundancy functions, including bus interface module redundancy, bus media redundancy and I/O module redundancy. Bumpless switching is achieved and all outputs can be forced or preset. The I/O modules are locked through mechanical locking keys and terminal blocks, and all modules can be plugged and unplugged while powered. Provides intrinsically safe modules and HART communication, converts the HART protocol to Profibus-DP V1, and can use DTM for configuration. Each module and channel status display are easy to diagnose. All modules are injection molded and the protection level is IP20. The S800 I/O station is rail mounted and can be installed horizontally or vertically. Compact and expandable terminal blocks can be mixed together. Choosing extension cables can make the installation more flexible to suit different installation space requirements.5. System composition planThe system is equipped with four process stations and eight operator stations: the engineering station uses industrial PCs (portable computers can also be used) as debugging equipment. According to the coal chemical process and site layout, we have established a total of 4 process stations; the system The operator station runs on an industrial PC and has an operating interface developed based on the full Chinese Digivis software package of the MS Windows NT platform. Its graphical operating interface enhances the use and operation functions of the system. In addition, it can also improve the external device indicators of the PC, such as monitors , printers, mice and keyboards, etc., making system operation more convenient. According to the manufacturer”s requirements, one or two operator stations are established corresponding to the four process stations. Each operator station can only monitor and operate the information of the corresponding process station. The specific structure is shown in Figure 1.The entire system is designed to be safe and reliable. Industrial Ethernet adopts a redundant network topology with high reliability and security. When one or all of the operator stations and engineer stations are shut down, the system will not shut down as long as the process station does not stop; while the process station adopts dual-machine hot backup In redundant mode, a battery can be placed in the controller EI module . This battery can maintain normal operation for 20 milliseconds in the event of a power outage. When an error occurs in one controller, the system will automatically switch to another controller to achieve Smooth switching and synchronization between the master and slave AC800F controllers make the entire system highly secure. Not only the controller can be redundant, but all inputs and outputs support redundant configuration, which can further improve the reliability of the system. But using input and output redundancy will increase the cost, so we only use controller redundancy.The AC800F controller system communication template is a standard TCP/IP protocol Ethernet module, so that the system can be connected to the enterprise LAN without adding additional equipment. Since the system supports standard DDE and OPC data exchange standards, the system can communicate with various third-party databases or Software data exchange will be easier, bringing convenience to on-site real-time data management and enterprise information management systems.6. Process realizationAccording to the process, it will be divided into: “coke screening system”, “coal preparation”, “desulfurization and sulfur recovery”, “ammonium sulfate”, “benzene elution”, “comprehensive water supply”, “biochemical treatment”, “coking” , “refrigeration station”, “air compressor station”, “tank area” and other post stations. During system design flow chart screens are designed using job stations. We have created a lot of macro libraries in the picture, which not only facilitates us to draw the operator picture, but also ensures the unity and beauty of the picture. A number of dynamically displayed bar graphs were made on the operation interface of the operator station, which not only vividly describes the changes in variables, but also avoids the operator”s visual fatigue. There are also many graphic symbols in the screen. These graphical symbols can not only represent the status of the current variable, but the operator can also use these symbols to call the operation panel of the corresponding variable, use software logic control, control the pump switch, manual automatic switching, and the predefined value or operating value of the variable .
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