RELANCE 0-60063-1 監(jiān)控驅(qū)動(dòng)
小修項(xiàng)目
DCS系統(tǒng)小修隨機(jī)組小修進(jìn)行，小修項(xiàng)目應(yīng)包括以下內(nèi)容：
1) 清理盤(pán)柜防塵濾網(wǎng)，檢查各種冷卻風(fēng)扇。
2) 電源及模件工作狀態(tài)檢查。
3) 硬件設(shè)備功能試驗(yàn)。
4) 消除運(yùn)行中無(wú)法處理的缺陷。
5) 部分就地設(shè)備檢修;部分I/O模件校驗(yàn)。
6) 機(jī)組主保護(hù)及聯(lián)鎖試驗(yàn)
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(xiàn)，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(xiàn)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(xiě)測(cè)試報(bào)告。
Pay attention to the situation where all operating stations are powered off
At this time, check if the power indicator light of the control station is normal, and if there is a fault in the card diagnosis indicator light. The red light and green light indicate that the card is working normally. If all of the above are normal, it can be determined that the control station is working normally and the self adjustment system is working normally. However, the operator cannot see the monitoring screen temporarily and cannot perform remote control operations on site. Immediately notify the microcomputer maintenance personnel to repair and go to the site for monitoring.
Pay attention to the situation where all control stations are powered off
Due to the dual power supply of all control station equipment, one UPS and one mains power supply, the probability of this situation occurring is very low.
When the control station is completely powered off, the two system alarm red lights on the monitoring screen light up, communication is interrupted, and all data is not refreshed. All self regulating systems are completely out of control, and the regulating valve will return to its initial state. The air opening valve will be fully closed, and the air closing valve will be fully open. At this time, emergency handling or parking should be carried out immediately, and the operation should be carried out on-site at the same time.
Observe the power outage situation of the operation station
If some operation stations suddenly do not display, it indicates that the UPS or mains power is cut off, and the microcomputer maintenance worker is immediately notified for repair. If the operating station with electricity can monitor normally, it will not affect the normal adjustment of the control system.