RELANCE 0-60029-1 電源控制器
根據(jù)計(jì)算機(jī)控制設(shè)備特點(diǎn)，DCS除像常規(guī)控制設(shè)備一樣進(jìn)行外圍設(shè)備檢修外，隨機(jī)組大小修至少要進(jìn)行以下項(xiàng)目的檢修，即模件組態(tài)拷貝，核實(shí)控制模件標(biāo)志和地址;清掃電源、模件及防塵濾網(wǎng)，檢查緊固控制柜接線，進(jìn)行接地系統(tǒng)檢查，冷卻風(fēng)扇檢修，電源設(shè)備檢修測(cè)試;重要測(cè)量和保護(hù)信號(hào)線路絕緣檢查;電子室溫度、濕度及含塵量檢修前測(cè)試，檢修后復(fù)查;模件電源及冗余模件的切換試驗(yàn);報(bào)警及保護(hù)功能測(cè)試;通信、手動(dòng)操作站檢查;進(jìn)行卡進(jìn)行校驗(yàn)等;檢修前要做好充分的準(zhǔn)備工作，檢修中要嚴(yán)格執(zhí)行工序卡制度，并認(rèn)真做好檢修記錄，對(duì)電源、模件等測(cè)試要仔細(xì)填寫測(cè)試報(bào)告。
大修項(xiàng)目
DCS系統(tǒng)大修隨機(jī)組主設(shè)備大修進(jìn)行，大修項(xiàng)目因包括以下內(nèi)容：
1) 對(duì)控制設(shè)備進(jìn)行全面檢查，作好記錄。
2) 拷貝所有模件的組態(tài)，核實(shí)模件的標(biāo)志和地址。
3) 清掃控制柜電源及模件，清理盤柜防塵濾網(wǎng)。
4) 檢查、緊固控制柜接線及固定螺絲。
5) 接地系統(tǒng)檢查，電源性能測(cè)試，線路絕緣測(cè)試。
6) 對(duì)控制柜進(jìn)行防塵、密封處理，更換冷卻風(fēng)扇。
7) 記錄儀、打印機(jī)、報(bào)警窗、人機(jī)接口設(shè)備等檢修。
8) 消除運(yùn)行中無法處理的缺陷，恢復(fù)和完善各種標(biāo)志。
9) 硬件設(shè)備功能試驗(yàn)，組態(tài)軟件裝載及檢查。
10)測(cè)量模件校驗(yàn)，現(xiàn)場(chǎng)設(shè)備檢修。
11)保護(hù)聯(lián)鎖試驗(yàn)。
12)電纜、管路及其附件檢查、更換。
View the working status of the operation station
When a certain operating station crashes, the monitoring screen data does not refresh, and the adjustment screen does not work, check whether the upper right system alarm indicator light is normal, and check whether other operating stations are working properly. If it is normal, only that operating station has a problem, and notify the microcomputer maintenance personnel to repair it. If the data from other operating stations remains unchanged, it indicates a malfunction in the system communication network. Immediately notify maintenance personnel to check the operation of the network equipment and repair it.
the fluctuation data has no direct impact on each other in terms of technology, it may be due to a malfunction of a certain card in the microcomputer. Immediately switch the relevant self adjustment system to manual adjustment, and if necessary, go to the site for adjustment. At the same time, notify the microcomputer and instrument personnel to check.
Determine whether the fluctuation data is a process related parameter. If it is a related parameter, notify the instrument and microcomputer personnel to check whether a certain adjustment system fluctuation causes a change in the related parameters. At the same time, put the relevant adjustment system in manual mode and adjust it on-site if necessary. In a water solution full circulation device, when the pressure of the urea synthesis tower is normal, it is 19.67 MPa. If there is a sudden large-scale fluctuation, it will inevitably cause pressure fluctuations in the downstream medium pressure and low pressure systems. This situation is due to fluctuations in one of several related parameters causing changes in other parameters, not the control system itself.