Talking about the Role of Lower Computer in the Control of CO2 Removal

In the pressure Swing adsorption decarbonation control system, the lower unit detects the on-site temperature, pressure, level and other signals through the A/D module and an appropriate external electric meter, and receives instructions from the host computer at any time to change the process adjustment parameters. The automatic switching of the programmable valve, the automatic control of the opening degree of the regulating valve, the program temporary setting, self-checking, resetting, interlocking, and automatic tracing of the power off are realized. The C200HE series medium-sized PLC device from Japan OMRON Corporation is selected, and its main features are:

The first is that the system is flexible in structure and adopts a modular structure. Users can customize the size of the system according to their own production scale, which is cost-effective;

The second is powerful, in addition to the basic input and output modules, there are many I / 0, A / D, D / A, high-speed counting and other intelligent I / 0 module for users to choose;

The third is strong communication capabilities and expansion capabilities, and NT link communication (1B1 or 1BN) with the programming device.

In addition, PC can also be installed to support communication macro protocol communication board, such as through the PCLink system and OMRON's C series PLC for the parity link communication; also can be achieved through the I / 0Link system to exchange data between multiple PCs to form a large-scale Distributed control system. In addition, it can also make the SYSMACLink system a network site in SYSMACNET to support large and small-scale factory automation. It is highly reliable.

The software functions of the lower computer include:

1) Power-on initialization module: It is mainly operated in 8-3-2/V mode and can be operated in 6-2-2/V mode if necessary.

2)Sequence control module: It not only realizes the sequence control output of the PSA process-controlled valve, but also has functions such as program pause, self-test, manual, reset, and stepping.

3) Failure treatment module: The vacuum system of the PSA decarburization device adopts a water ring vacuum pump. In order to prevent the inlet water of the adsorber from contaminating the molecular sieve due to the sudden shutdown of the vacuum pump, when the PLC detects that the vacuum pump is stopped, it immediately enters the corresponding program. The module issues an instruction to close the corresponding valve on site and the program is suspended to ensure the safety of the adsorbent.

4) PID adjustment module: C200HE has ready-made PID adjustment instructions available, regulation rules can be selected, can achieve proportional, integral, differential regulation law, pressure swing adsorption valve control process does not have a large inertia, it is generally used PI can. Differential regulation is required for temperature adjustment.

Swing

Kids tree swing,tree swing for kids,saucer swing with stand

Jiangsu Baoxiang Sports Equipment Co., Ltd , https://www.skyboundup.com