How to establish a complete DCS system? The DCS control system is very mysterious to those who have not handled it. As long as it has been done, it will not be so difficult. Now, the manufacturer of the DCS card of Zhejiang University Central Control will briefly sort out the configuration, steps and basic ideas of the DCS system.
Confirm DCS manufacturer
After receiving the project, confirm the type and supplier of DCS control system. To understand the performance of DCS hardware and software, general manufacturers will organize training. The number of DCS cards shall be determined according to the preliminary points provided by the design institute, and generally not less than 30% margin.
Point table sorting
The point table shall be sorted out according to the corresponding drawings provided by the design institute, and the point table shall be sorted out by unit, generally in the EXCEL table, including tag number, name, signal type, range, unit, alarm value (if any), and I/O points shall be counted.
I/O channel assignment
The I/O channel of DCS shall be allocated according to the card type provided by the DCS manufacturer, and the I/O channel shall be allocated to the specific channel according to the type of measuring point. Be careful not to make mistakes.
Complete hardware configuration according to I/O points
DCS system hardware configurations of different brands are different, but the configuration ideas and methods are the same: DCS system hardware is determined according to the accurate on-site requirements and DCS system I/O points.
Generally, the DCS manufacturer's personnel will install, check the configuration, start the system, and only cooperate.
Make the lower configuration according to the point table
Start the configuration software according to the system provided by the DCS manufacturer;
Match the point table with the corresponding channel, and do not make mistakes;
Configure PID control loop according to control scheme;
Configure pure display circuit;
Configure switch control circuit and small interlocking circuit, such as pump startup and shutdown;
There is sequence control, and the sequence control part is configured;
MODBUS communication of third-party equipment.
DCS display control screen
This part is very important. The user can only see the screen. Get the DCS flow chart, read it several times, basically understand the material flow direction and process, and then communicate with Party A's users, and put those parts on one display.
Draw the picture in the system picture configuration software, and then contact the process personnel of Party A to modify the picture until they are satisfied. In order to improve efficiency, sub graph mode shall be selected as far as possible.
So far, a complete set of DCS system has been basically established. With the continuous improvement in the process of debugging, a complete set of DCS system has finally been formed. Come to our website for more information http://www.sdjkyqyb.com Consult!