1. outlines
The high pressure tries the press pump is one kind of extremely special test facility, mainly applies to the high-pressure vessel, the pipeline withstanding extremely high pressure (150~250MPa) tests. Is tested the vessel or the pipeline after passes through the specific high pressure bearing capacity test, can normally apply to in its design variable pressure scope, otherwise, because the product certain factors cause the quality question, (150~250MPa) under can bring a bigger accident in the very high working pressure.

In the high pressure 试泵 control system needs to have a bench work controlling machine to take its test data the recording and the establishment corresponding database, labor controlling machine inevitably needs and the PLC establishment communication connection. Uses in Shi Naide electricity TWIDO series PLC after this system TWDLCAE40DRF, uses on this PLC in to set at the ethernet connection and the labor controlling machine communication, not only saves the RS232-RS485 switch which its original use is easy to damage, simultaneously enhances the communication speed from original several dozens K to 100M, simultaneously, on TWDLCAE40DRF in sets at 4 communications joints which at the same time the ethernet port support if establishes, like this, in the equipment debugging process, was allowed while labor controlling machine on with configuration software and the TWIDO programming software joint, enormously has facilitated the debugging process.

2. systems descriptions
The high pressure tries the press pump the control system and TWDAMM3HT is composed its lower position control system together by together the TWDLCAE40DRF controller, 24 entrance points and 16 outputs which on TWDLCAE40DRF brings selects versatilely satisfies the equipment to a IO demand, and slightly has the surplus, considered the equipment several main outputs use is frequent, therefore the surplus output achievement these major control points backup, will have in the damage situation in the main output spot, will be allowed through the entrance point or on the position machine establishment, the output spot which will damage cuts on spare output, will only need the scene the serviceman will change meets the line then, This may avoid the equipment manufacture side to the on-site maintenance trouble, saves the money for the customer to be prompt.

The high pressure tries the press pump original use in the control platform not 2 groups simulations quantities input and brings 1 group simulation quantity output the module, stemming from the cost reason, only can choose together 2 groups simulations quantities load module. Thus, on the equipment needs the pressure test end sensor signal, must by the PLC simulation quantity module with the numeral demonstrate together the table altogether uses, a group signal is connected in parallel fashion to two electric circuits in, can have the certain influence to its observed value. After selects TWDAMM3HT to be possible to avoid this kind of situation, after the sensor signal which the high-pressured test end comes turns on the simulation quantity module, carries on the operation while the procedure interior, again sends out by the simulation quantity output channel, the pressure numeral demonstrated the table receives the simulation quantity module the out-port, like this may cause the examination the pressure value to be more accurate.

According to the equipment control request, needs 10 sections of tests pressures test condition which may choose, each section of tests test time may adjust, after pressurizes had ended may choose pressurizes the injection to pump whether needs the release of pressure, and may establish the release of pressure pressure the value. According to is different is tested the pressure component the test request, may establish the corresponding test craft. Based on TWIDO the series PLC succinct effective instruction structure, may extremely easily complete the control procedure the design.

3. summaries
After the high pressure tries the press pump to use the TWIDO control system, the customer to tests the pressure the accuracy and is very high with on position machine communication speed appraisal, and has the drop to the overall cost to move the effect more ideal Shi Naide solution extremely to satisfy.