ABB 3BHB004692R0002 5SXE01-0127熱電偶輸入模塊DCS系統(tǒng)接地是為了保證當進入DCS系統(tǒng)的信號、供電電源或DCS系統(tǒng)設備本身出現(xiàn)問題時，有效的接地系統(tǒng)能承受過載電流并可以迅速將過載電流導入大地。接地系統(tǒng)能夠為DCS提供屏蔽層，消除電子噪聲干擾，并為整個控制系統(tǒng)提供公共信號參考點（即參考零電位）。
當接地系統(tǒng)發(fā)生問題時(接地電阻過大，多點接地，接地線斷線或接地線與高電壓、大電流設備相接觸等)，會造成人員的觸電傷害及設備的損壞，據(jù)了解，有些DCS系統(tǒng)經常“死機” (或不明原因的“死機”)，大多是因為接地系統(tǒng)不良或存在問題所引起的。因此，完善、可靠、正確的接地，是DCS系統(tǒng)能夠安全、可靠和良好運行的關鍵。
二、DCS接地分類
在一般情況下，DCS控制系統(tǒng)需要兩種接地：保護地和工作地（邏輯地、屏蔽地等）。對于裝有安全柵防爆措施的系統(tǒng)如化工行業(yè)所用的系統(tǒng)，還要求有本安地。
2.1保護地（CG，Cabinet Grounding）
是為了防止設備外殼的靜電荷積累、避免造成人身傷害而采取的保護措施。DCS系統(tǒng)所有的操作員機柜、現(xiàn)場控制站機柜、打印機、端子柜等均應接保護地。保護地應接至廠區(qū)電氣專業(yè)接地網，接地電阻小于4Ω。The purpose of DCS system grounding is to ensure that the effective grounding system can withstand the overload current and quickly lead the overload current to the ground when the signal, power supply or DCS system equipment entering the DCS system have problems. The grounding system can provide shielding layer for DCS, eliminate electronic noise interference, and provide common signal reference point (i.e. reference zero potential) for the entire control system.
When problems occur in the grounding system (such as excessive grounding resistance, multi-point grounding, broken grounding wire or grounding wire contacting with high voltage and high current equipment), it will cause electric shock injury to personnel and damage to equipment. It is understood that some DCS systems often "crash" (or "crash" for unknown reasons), mostly due to poor grounding system or problems. Therefore, perfect, reliable and correct grounding is the key to safe, reliable and good operation of DCS system.
2、 DCS grounding classification
In general, DCS control system requires two kinds of grounding: protective grounding and working grounding (logic grounding, shielding grounding, etc.). Intrinsically safe places are also required for systems equipped with explosion-proof barriers, such as those used in the chemical industry.
2.1 Protective area (CG, Cabinet Grounding)
It is a protective measure taken to prevent the accumulation of static charges in the equipment shell and avoid personal injury. All operator cabinets, field control station cabinets, printers, terminal cabinets, etc. of DCS system shall be grounded. The protective ground shall be connected to the grounding grid of electrical discipline in the plant area, and the grounding resistance shall be less than 4 Ω.

主營產品簡介
專注于DCS、PLC、機器人控制系統(tǒng)、大型伺服四大系統(tǒng)領域。

主營產品各種模塊/卡件，控制器，觸摸屏，伺服驅動器。

優(yōu)勢：供應進口原裝正品，專業(yè)停產配件，

發(fā)貨快，貨期精準，

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●使用前:

在操作和維護，安裝設備之前，請閱讀并嚴格遵守安全相關的信息。

Read and strictly follow safety-related information before operatingmaintainingand installing equipment.

●使用者要求:

必須從事安裝，組裝或維護設備等相關工控電氣機械以及其他相關技術的人員。

Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.應用范圍:

應用于品牌本系列工業(yè)以及生產生活自動化設備產品。

Used in the brand of this series of industriaand production automation eauipment products

適用于場景:系統(tǒng)集成，非標定制，產線升級改造，原設備電氣替換等等。

Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.

●操作人員:

應該由本品牌專業(yè)培訓操作員來安裝、操作和維修設備。專業(yè)人員具有技術能力強，熟悉安全信息和安全實施:

熟悉設備的安裝加工、操作和維護:熟悉處理所有的潛在危險情況。

Equipment should be installed,operated and maintained by trained operators from the brand

●危險情況

警告

.請注意使用人員的人身安全。

●除了產品特性以及功能，還需了解產品的使用壽命環(huán)境。

●充分學習產品使用手冊，否則非專業(yè)人員可能會造成人身危險。

Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.

●服務行業(yè)

適用水泥，木業(yè)，石業(yè)，橡膠，石油，化工，發(fā)電，環(huán)保，水處理，制冷，交通，鋼鐵，食品，飲料，船舶，制冷等行業(yè)

Applicable to cementwood,stone,rubber,petroleumchemical, power generation