GE IS220PAICH1A 336A4940CSP3 FANUC Gas Turbine Card Turbine Module

Description

There are a variety of certifications associated with the IS220PAICH1A pack due to its ability to be used in a number of locations, some of which are hazardous locations, class one zone two group IIC, class one division two groups A, B, C, D, and ATEX zone two, group IIC and non-hazardous locations as well. The following certifications are used for the locations, UL E207685, and UL DEMKO 12 ATEX 1114875X, please take into account that the UL E207685 certification is used in numerous locations.

There are three models that can be used with the IS220PAICH1A unit which are the IS200STAIH1A and IS200STAIH2A as well as the IS20TBAIH1C model. All of these models are referred to are known as input-output terminal boards.

The typical location for the PAIC I/O pack will be in one of the two available VME racks which are the thirteen or twenty-one slot racks. Please note that this unit will typically be used with a triple modular redundant architecture system. With the TMR system, there is an individual control module, I/O net, and main processor card.

The analog PAIC I/O package is another model in the Mark VI system, and its available information is limited. Most of the information about this model is general information about its visual effects and when it will run in the Mark VI system.

Problems and solutions encountered during debugging:
(1) The problem of module burning and its prevention and treatment methods.
During the debugging process, burning of modules is often encountered, and there are many reasons for module burning. The main reason is due to wiring errors, which can lead to strong electricity entering the external circuit.
Prevention and handling methods: Firstly, before testing the module, the external wiring of the module should be disconnected, the power fuse of the module should be released, and then the module should be inserted and the power fuse should be connected. After the module testing is completed, the module must be pushed out; Secondly, before the DCS and external equipment transmission experiment, it is necessary to check whether the wiring between the terminal cabinet and the external circuit is correct. During the inspection process, a multimeter should be used to check for backpin grounding and DC voltage conditions, ensuring that there is no strong current entering. After there are no issues, insert the module for the experiment and push it out after completion. For example, after conducting transmission experiments on all equipment on the module, the module can only be placed in the insertion position. The third is to try not to plug or unplug modules with electricity, and do not insert modules that have not undergone transmission or system debugging into the position. Strengthen the coordination of debugging and avoid cross operation of the same system.

(2) Screen issues and solutions.
When a red bar appears on the configuration screen, it is usually caused by a circuit failure, mainly due to possible wiring errors or card failures, or possibly due to faults in on-site instruments. If there are green bars appearing on the configuration screen, the configuration error may be due to duplicate or non-existent channels; When debugging, the data display is normal, but in production, the data is zero. In this case, the check is to see if there is a fault alarm in the data. If it is a red fault alarm, the operation of the card should be checked immediately; When multiple data in the monitoring screen fluctuate significantly at the same time, it is necessary to determine whether the fluctuation data is a relevant parameter in the production process. If there are relevant parameters, it is necessary to notify a professional to check and see if there are any changes in the parameters caused by fluctuations in a certain adjustment system. At the same time, the relevant adjustment should be set to manual mode, and on-site adjustment is necessary.

(3) An electromagnetic interference problem has occurred.
During the debugging process, it was found that there was a voltage rise at the common end of the DCS terminal cabinet, causing some equipment to malfunction. At the same time, it was found that the feedback signals of some dampers frequently changed, leading to frequent action of the induced draft damper, which in turn caused overheating of the actuator motor, seriously affecting the adjustment quality of the automatic control system. The above is mainly caused by the interference of electrical signals on feedback signals, especially due to the modification of old factory equipment. Mainly because the induced draft fan cable and the feedback signal cable of the induced draft fan baffle are in the same cable trench, the high-voltage cable generates a large amount of strong electrical interference.
Solution: Place a layer of steel wire mesh on the walls around the control room and connect it to the electrical protection PE grounding system to prevent strong electromagnetic field interference caused by the distance between high-voltage cables. Alternatively, place two cable trenches for each type of cable to eliminate interference. Furthermore, a set of filtering circuits is installed on the DCS side of the feedback signal to solve this problem.