RTU common industrial applications is introduced

industrial RTU common application environment introduction

RTU

RTU English full name RemoteTerminalUnits, called the Chinese remote terminal unit.

RTU is characterized by:

1, the communication distance is longer than the

2, used in various industrial field conditions

3, modules, structural design, easy to extend

4, in a remote communication, remote sensing, remote control in the field of water conservancy, electric power dispatching, municipal scheduling and other industries widely used.

detail

RTU ( RemoteTerminalUnit） Is a kind of remote measurement and control units, responsible for on-site signal, monitoring and control of industrial equipment. Compared with the common programmable controller PLC controller, RTU often want to have good communication ability and a greater storage capacity, apply to the more extreme temperature and humidity conditions, provide more computing functions. It is because of RTU perfect function, makes the RTU products get a lot of application in SCADA system.

remote terminal unit ( RTU） Electronic equipment is installed in the remote site, used for monitoring and measuring installation at the scene of the remote sensors and equipment. RTU state or measured signals converted to be sent in the communication media data formats. It will also send more data into commands from a central computer, the function of the implementation of equipment control.

supervisory control and data acquisition is a broad term, and applied to equipment can be installed in the remote site to the central control and monitoring system. SCADA system can be designed to meet various applications ( Water, electricity, gas, communications, security alarm, etc. ) And meet customer requirements of design index and operation concept. SCADA system could be as simple as just by a pair of wires on the far side of a switch, can also be complex to a computer network, it consists of many wireless remote terminal unit ( RTU） Composition and installation is controlled in the powerful microcomputer communication. SCADA system of remote terminal unit can use a variety of hardware and software. It depends on the nature of the accused of the scene, the complexity of the system, the requirement of data communication, real-time alarm report, analog signal measurement precision, the adjustment of condition monitoring, equipment control and switch control.

substation is an important part of power system, it's safe and reliable operation is the fundamental assurance for the safe and economic operation of power grid. Current towards integrated automation substation is itemized automation and integrated automation of short-term goal is to put the substation protection, measurement, monitoring, remote, etc, data sharing, resource sharing, greatly improve the effect of automation.

in power system, in order to better management, tend to realize the power grid dispatching automation, though, provincial, county level scheduling has different functions and responsibilities, but its basic same, usually is made up of master station and remote terminal ( RTU） Composition. Remote terminal is grid installed in power plant or transformer substation monitoring and control system of a remote device, it is responsible for collecting the power plant or transformer substation simulation as well as the status of running status of electric power, monitor and control center to transfer these simulation as well as the state, the implementation of dispatching center to the power plant or transformer substation control and scheduling command. However, with the development of the modern management of coal mine, coal mine safety production monitoring scheduling system is the public recognition, by setting up the system in ore control center main computer, can real-time monitor the coal mine production safety and the working conditions of mineral sheers important mechanical and electrical equipment, thereby to control each production link and adjust, make the production command management and control integration, become an important link in production of mine.

because of coal mine dispatching room away from the mining site, therefore, need to set up multiple RACES up and down mine. There is no doubt that coal mine substation is the core of enterprise production and power source, its relationship with safety production and human safety. Substation monitoring system of coal mine safety management is an important part. Usually substation and coal mine production dispatch center are far apart, operation technique, must be used in setting remote terminal substation RTU, connected to the dispatch center computer through the channel, RTU and dispatching center through the information transmission over a long distance between complete RTU remote monitoring function.

RTU with master station can realize three remote function, i. e. , remote sensing, remote communication, remote control.

power

1. Support virtual private networks (VPNS) data ( APN/VPDN） 。 2. Support is more than double backup data center and data center ( 8) Receive data, the maximum support sending center 256. 3. Intelligence drops, support online testing, online, offline automatic redial, ensure equipment online forever. 4. Remote sensei: support for messaging, voice, data, awaken approach and timeout disconnected from a network connection. 5. Support fixed IP communication mode; Support the DDNS dynamic DNS communication mode. 6. Support the no. 6 counter input. 7. Support 8 way switch input. 8. Support 8-way analog input. 9. Support 4 road digital output. 10. Support 2 road PWM output. 。 11. Support 4 road relay output. 12. RS232 serial port communication support 1 road. 13. RS485 communication support 1 road. 14. Support Ethernet 1 road. 15. To support the expansion of wireless RTU management platform.

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