ABB SCYC51090 58053899E pulse trigger board module
Brand ABB color standard application Industrial height 128mm rated current 268mA
Protection Level IP45 Suitable for motor power 168KW Application Site Power Industry Material Code GJR2391500R1220 Power industry HIEE401782R0001 Part No. SCYC51090 58053899E
Applicable pipe 2 Whether imported is weighing 2.88 kg can be sold nationwide
ABB SCYC51090 58053899E pulse trigger board module
There are strict regulations on the installation of DCS control system, especially for the transformation system, it is particularly important to select a construction unit with good qualifications and construction experience, preferably with transformation experience. Once the selection of the control system is determined, the technical personnel of the construction unit should be involved in the design of the control system, the construction drawings, the development of construction measures and technical training, etc., before the project starts, the construction unit must formulate a strict schedule according to the requirements of the construction period, and require the construction unit to organize the force and come up with their construction plan. In the DCS control system installation and commissioning construction, pay particular attention to the following problems:
3.1. During construction, attention should be paid to the reliable insulation between the cabinet and the ground and the reliable grounding of the bus bar of the cabinet. At the same time, the holes must be treated with fire prevention, and the cabinet must have anti-vibration measures.
3.2. When laying the cable, pay special attention to the separation of strong and weak currents, and the reliable grounding and anti-interference of the shielded wire. In the wiring process must be in accordance with the design drawings (must have been carefully reviewed by the person), according to the drawing construction, in the wiring, the cable and core wire mark to be clear and complete, can be maintained for a long time; Crimp terminals must be treated with pre-insulated tube mounting ends.
3.3 To strictly control the environmental conditions of electronic equipment, pay attention to fire, air conditioning, ventilation and lighting and other work. In particular, ventilation and air conditioning, due to the strict temperature requirements of the DCS control system, the air conditioning system should be put into operation as soon as possible, the central air conditioning outlet can not be directly on the cabinet or DCS other electronic equipment, so as to avoid condensation water infiltration into the equipment caused harm; At the same time, the electronic card is never allowed to have dust, so it is required that the electronic room can always keep the environment clean and the filter clean, pay attention to dehumidification and adjust the temperature.
4. Program equipment and debugging acceptance
In the process of program design and acceptance, we should fully mobilize the enthusiasm of all employees, so that everyone as much as possible and the new DCS control system to understand, familiar with and master. In the configuration and acceptance, pay special attention to the following issues:
4.1. In the program configuration design, the control strategy to ensure the safe operation of the unit must be adopted. The logical criteria for protection or linkage must be sufficient. For turbine speed and turbine lubricating oil pressure, it is advisable to combine hardwired protection with software protection, and it is recommended to use normally closed signals to ensure reliable input of protection. For important two-out-of-three protection signals, a combination of analog and switching quantity should be used. Under the premise of ensuring the safety of important main equipment, it is recommended to use normally open signals as far as possible to avoid protection misactions;
4.2 In the control system selection, design, testing, acceptance, putting into operation and online adjustment of each stage, the program designer and tester must be involved in the whole process, to combine the problems existing in the use of similar control systems, strict review of the rationality of protection control logic design and configuration, must be a comprehensive test of all loops. Carefully record the results of each inspection and test, and contact the supplier immediately if there is a problem related to the software, and give them complete feedback to solve the problem as soon as possible.
4.3 to have the necessary backup means: important protection and interlocking, out of the communication connection, but also must have a hard wiring method; For important regulation equipment, in addition to soft hand operation at the operator station, there must also be backup hand operation, so that when the DCS control system controller or I/O module fails, it can still intervene in time for important equipment.
4.4. Strengthen the management of programmers, adopt the authorization system, and anyone who changes the program must go through the relevant approval procedures, and make records before and after the transaction. The PID parameters and threshold detection blocks of important adjustment systems must be recorded. In the process of optimizing adjustment parameters, a guardianship system must be implemented, and tests must be carried out in time after modifying parameters to avoid safety risks
5. Personnel management and technical training
Whether the new control system is put into operation or the old system is transformed, once the DCS control system selection is determined, before the system construction, hardware testing and program configuration, it is necessary to have strong practical experience of thermal control engineers and operation operators to carry out relevant training work, training work must be combined with the simulator and the actual system, so as to be targeted.
5.1 Training of operators: due to improper operation may affect the DCS hardware or software performance, it will indirectly affect the safety and economic indicators of the unit, so in the DCS screen process to widely solicit the opinions of operators, so that they are familiar with the design and commissioning, so that they are fully familiar with the control interface (screen) operation changes, know how to operate. For daily operations such as start-stop equipment, manual/automatic switching and accident intervention, complete operating procedures should be prepared, technical training and drills should be conducted, and relevant operators should be fully trained by taking full advantage of the DCS control system debugging stage.
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