產品詳情資料
(1)電源係統
DCS係統的供電係統是其運行的基礎，電源負荷不要超過60%，以免電源高負荷運行。同時要考慮用的電源，一般採用UPS電源，採用兩臺UPS互為備用好，一臺出現故障後備用機能夠無擾切換，提高電源的可靠性。UPS輸入電源不要採用電氣的同一母線，要根據電氣廠用接線取可靠性高的不同母線段電源，這樣保證電氣一段母線出現問題後不會影響DCS係統的電源。
DCS電源係統(UPS、電源櫃等)在現場安裝時要安裝在滿足無塵、無振動、防腐等要求的電子設備間內，同時安裝完畢通電前把電纜孔封堵，以防泄漏蒸汽從電纜孔進入電源係統造成電源短路。在DCS電源上電後，要在UPS、電源櫃等設備上挂“設備帶電運行禁止操作”標識牌，更不準可以在DCS電源係統上接入與DCS係統
無關的負載，如檢修電源、檢修照明、充電設備、空調等。
(2)冗餘係統
現場考慮人們有必要對重要的I/O模塊進行冗餘，同時考慮操作員站的N:1冗餘結構，這樣避免由於卡件或操作員站出現硬件故障造成設備停運。
(3)採用後備措施
手動後備
對於重要的控制回路，可以採用手動後備的方法來提高可靠性。一旦自動控制失靈，用手動操作站直接進行操作，在這種情況下，手動操作站直接輸出4∼20mA或1∼5V的模擬量信號去控制執行機構或直接接地進行設備的操作，可以手動控制生產過程。
自動後備
自動後備是採用冗餘的方式設置另外一套或幾套備用控制裝置。當處於運行狀態的自動控制裝置發生故障時，備用控制裝置自動投入，維持係統的自動控制。自動後備是冗餘係統的一種形式，冗餘有主控單元冗餘、電源係統冗餘、網絡冗餘、I/O模塊冗餘、操作員站冗餘、服務器冗餘等。運行設備出現故障時，熱備設備會自動無擾的運行，同時不影響對故障設備的檢修。
英文產品詳細信息
(1) Power system
The power supply system of the DCS system is the foundation of its operation, and the power load should not exceed 60% to avoid high load operation of the power supply. At the same time, it is necessary to consider using high-quality power supply, generally using UPS power supply. It is best to use two UPS as backup for each other, and one backup machine can switch without disturbance in case of a fault, improving the reliability of the power supply. The UPS input power supply should not use the same electrical busbar. It is necessary to choose different bus section power supplies with high reliability according to the electrical factory wiring, so as to ensure that the power supply of the DCS system will not be affected if there is a problem with the electrical busbar section.
When installing the DCS power supply system (UPS, power cabinet, etc.) on site, it should be installed in an electronic equipment room that meets the requirements of dust-free, vibration free, and anti-corrosion. At the same time, after installation, the cable holes should be sealed before power on to prevent leakage steam from entering the power supply system through the cable holes and causing power short circuits. After powering on the DCS power supply, a "No operation allowed for live operation of equipment" sign should be hung on equipment such as UPS and power cabinet, and it is not allowed to connect loads unrelated to the DCS system, such as maintenance power supply, lighting, charging equipment, air conditioning, etc., to the DCS power supply system.
(2) Redundant system
On site, it is necessary to consider the redundancy of important I/O modules, while also considering the N: 1 redundancy structure of the operator station, in order to avoid equipment shutdown caused by hardware failures of cards or operator stations.
(3) Adopting backup measures
Manual backup
For important control circuits, manual backup methods can be used to improve reliability. Once the automatic control fails, the manual operation station can be used for direct operation. In this case, the manual operation station can directly output 4-20mA or 1-5V analog signals to control the actuator or directly ground the equipment for operation, which can manually control the production process.
Automatic backup
Automatic backup is the use of redundancy to set up another set or several sets of backup control devices. When the automatic control device in operation malfunctions, the backup control device automatically switches on to maintain automatic control of the system. Automatic backup is a form of redundant system, which includes redundancy in the main control unit, power supply system, network, I/O module, operator station, and server. When there is a malfunction in the operating equipment, the hot standby equipment will automatically operate undisturbed without affecting the maintenance of the faulty equipment.
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| YOKOGAWA | AAI141-S00 S2 | EPRO | PR6423/011-131 CON031 |
| YOKOGAWA | AAI141-S00 S2 | EPRO | PR6423/012-010 CON021 |
| YOKOGAWA | AAI141-S00 S2 | EPRO | PR6426/000-121 CON031 |
| YOKOGAWA | AAI143-H00 S1 | EPRO | PR6423/013-020 CON021 |
| YOKOGAWA | AAI143-H00 S1 | EPRO | PR6423/013-130 CON021 |
| YOKOGAWA | AAI143-S00 S1 | EPRO | PR6423/013-130 CON021 |
| YOKOGAWA | AAI143-S00 S1 | EPRO | PR6423/014-010 CON021 |
| YOKOGAWA | AAI143-S03 S1 | EPRO | PR6423/015-030 CON021 |
| YOKOGAWA | AAI143-S50 S1 | EPRO | PR6423/015-110 CON021 |
| YOKOGAWA | AAI543-H00 S1 | EPRO | PR6423/015-111 CON041 |
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