Belt conveyor centralized control system is the advanced automatic control, communication, computer technology, video monitoring technology, information technology and modern management technology, the coal transportation and statistics as a whole production system to control and management, provide the overall solution, in order to realize optimal operation, optimal control, optimal management, field unattended, to reduced efficiency, improve the level of production operation condition, safety, accident prediction. The centralized control system is mainly composed of three major parts: ground monitoring main station, underground monitoring sub-station, sensor and protection. The distributed network structure is adopted, and each station can be independently controlled by each other. The figure below shows the configuration of a sub-station.
System function
Multiple control modes are available: centralized control linkage, centralized control manual, local manual and maintenance four working modes;
In the centralized control center of the industrial control machine can be centralized control belt machine, coal feeder and other equipment on and off, a number of belt machine reversible coal flow start, along the coal flow stop; Control the interlock start and stop of part of the belt machine;
Automatic tensioning, soft lifting, power balance, controllable braking and down-running braking are realized according to the starting, running and stopping characteristics required by the belt conveyor;
The system reserves the interface with CST, controllable hydraulic coupler, frequency converter and other driving equipment, which can be seamlessly connected with the drive and control.
The system is equipped with coal piling, deviation, smoke, speed, temperature, bunker coal level, emergency stop blocking, longitudinal tear, sprinkling, broken belt, tension and other protection;
Video image monitoring device can monitor the working state of field equipment in real time;
Equipped with communication signal device, can realize the belt conveyor along the start notice, dot signal contact, voice alarm and voice communication.
The ground control room monitors the industrial control computer with one main and one standby, and displays the 22-inch color liquid crystal display, which can visually display the running state of process equipment, production condition parameters and equipment failure state by animation, graphics and Chinese characters.
The downhole control station has a menu-type operation interface, and all the protection values can be set through the cursor and keyboard. Users can also shield the unnecessary protection functions according to the field conditions.
The system has historical data report, historical curve query, historical fault record, fault shielding, parameter setting, display function and report printing.
Fault diagnosis screen will pop up automatically when fault alarm, fault voice alarm, indicating fault nature and location, fault can be quickly located, timely maintenance and treatment.
System configuration communication interface: Ethernet, PROFIBUS, RS485 interface, easy to network with the whole mine automation system.
System characteristics
The control mode is various, the function is rich, the fault detection is complete.
With good configuration environment, device, object, logic, interface and other configuration can be easily and accurately completed under the guidance of the wizard.
There is no need to set address dial code switch to plug and play voice intercom, emergency stop blocking and off-track along the belt. The system can automatically identify the device model, ID and access location along the belt, which is conducive to accurately determine the nature and location of the fault.
Communication interface is various, network structure is simple, easy to expand.
Convenient installation, debugging and maintenance.
Technical Parameters
Power supply voltage: AC 1140/660/380/220/127 V, voltage range of 75 ~ 110 %
Capacity: 32 PROFIBUS\MODBUS intelligent devices (no relay).
Interface types and number of each sub-station: Ethernet optical port 2 pairs, Ethernet RJ45 electrical port: 4, MODBUS port: 1, PROFUBUS port: 1, video electrical signal input port: 4.
Transmission channel.
Ethernet communication transmission rate is 10/100 Mbps, single-mode optical fiber transmission is 20km, multi-mode optical fiber transmission is 3km;
Ethernet communication transmission rate 10/100 Mbps adaptive, the maximum transmission distance of the electrical port 100 m;
When the PROFIBUS\MODBUS communication transmission speed is 1200 BPS, the maximum transmission distance can reach 10 km.
Video communication signal amplitude is 1 Vp -p (75 Ω load), for the NTSC or PAL video formats.