HIMA F8601模塊
電纜和連接器。帶有擴展高密度接線板（如接線板IC694TBB132）的模塊整體深約?英寸（13mm）。圖11:RX3i串行擴展背板尺寸和間距2.4系統布線遵循以下信息，以避免可能的I/O模塊布線錯誤：? 標記進出I/O設備的所有導線。在進入模塊面板門的插件上記錄電路識別號或其他相關數據。PACSystems*RX3i系統手冊第3節GFK-2314T 2019年9月安裝25? 電線應進行布線，以使每個現場I/O連接器相對于其各自的模塊固定。警告：除此處提供的信息外，請始終遵守適用于您所在區域或設備類型的所有接線和安全規范。例如，在美國，大多數地區都采用了國家電氣規范標準，并規定所有布線都符合其要求。在其他國家，將適用不同的規范。為了確保人員和財產的最大安全，您必須遵守這些規范。否則可能導致人身傷害或死亡、財產損失或破壞，或兩者兼而有之。2.4.1顏色編碼電線這些顏色編碼通常用于美國制造的工業設備。如果它們與適用于您所在地區或設備類型的代碼不同，請遵循適用的代碼。除了滿足代碼要求，電線顏色編碼使測試和故障排除更安全、更快、更容易。? 綠色或帶條紋的綠色-接地? 黑色-主交流? 紅色-輔助交流? 藍色-DC? 白色-普通或中性? 黃色-輔助電源不受主斷路器控制。提醒維護人員，即使設備與主電源斷開，也可能存在電源（來自外部電源）。2.4.2電線布線為了減少PLC電線之間的噪聲耦合，應將交流電源線和離散輸出模塊線等電氣噪聲布線與直流和模擬輸入模塊線或通信電纜等低電平信號布線分開。在可行的情況下，單獨分組以下類型的接線：? 交流電源接線包括PLC電源的交流輸入，以及控制柜中的其他交流設備。? 模擬輸入或輸出模塊接線應屏蔽，以進一步減少噪聲耦合。? 離散輸出模塊接線通常包括開關電感負載，在關閉時會產生噪聲尖峰。? 直流輸入模塊接線雖然在內部受到抑制，但屬于低電平輸入，應通過觀察這些接線實踐進一步防止噪聲耦合。? 通信電纜是產生噪聲的布線電纜，應遠離Genius總線或串行電纜等布線。PACSystems*RX3i系統手冊第3節GFK-2314T 2019年9月安裝26如果交流或輸出接線束必須經過噪聲敏感信號接線束附近，請避免將它們并排運行。如果它們必須穿過，請將它們以直角布線，以盡量減少它們之間的耦合。2.4.2.1將類似模塊分組以保持電線隔離如果可行，將背板上的類似模塊分組在一起可有助于保持電線隔離。例如，一個背板可以僅包含AC模塊，而另一個背板只能包含DC模塊，并進一步按輸入和輸出類型進行分組。2.5系統接地控制系統的所有部件及其控制的設備必須正確接地。這一點特別重要，原因如下：? 從系統所有部件到接地的低電阻路徑可在短路或設備故障的情況下最大限度地減少沖擊。? RX3i系統需要正確接地才能正常工作。? PLC系統中組合在一起的所有背板必須具有公共接地連接。
cables and connectors. Modules with Extended High-Density Terminal Blocks (such as Terminal Block IC694TBB132) are approximately ?-inch (13mm) deeper overall. Figure 11: RX3i Serial Expansion Backplane Dimensions and Spacing 2.4 System Wiring Adhere to the following information to avoid possible misrouting of wiring to I/O modules: ? Label all wires to and from I/O devices. Record circuit identification numbers or other pertinent data on the inserts that go into the faceplate door of the module. PACSystems* RX3i System Manual Section 3 GFK-2314T Sept. 2019 Installation 25 ? Wires should be dressed so that each field I/O connector is fixed relative to its respective module. WARNING In addition to information provided here, always follow all wiring and safety codes that apply to your area or your type of equipment. For example, in the United States, most areas have adopted the National Electrical Code standard and specify that all wiring conform to its requirements. In other countries, different codes will apply. For maximum safety to personnel and property you must follow these codes. Failure to do so can lead to personal injury or death, property damage or destruction, or both. 2.4.1 Color Coding Wires These color codes are commonly used in industrial equipment manufactured in the United States. Where they differ from codes that apply to your area or your type of equipment, follow your applicable codes instead. Besides satisfying code requirements, wire color coding makes testing and troubleshooting safer, faster, and easier. ? Green or green with stripe- Ground ? Black - Primary AC ? Red - Secondary AC ? Blue - DC ? White - Common or neutral ? Yellow - Secondary power source not controlled by the main disconnect. Alerts maintenance personnel that there may be power present (from an external source) even if the equipment is disconnected from its main power source. 2.4.2 Wire Routing To reduce noise-coupling among PLC wires, electrically-noisy wiring such as AC power wiring and discrete output module wiring should be separated from low-level signal wiring such as DC and analog input module wiring or communications cables. Where practical, group separately the following types of wiring: ? AC power wiring includes the AC input to the PLC power supply, as well as other AC devices in the control cabinet. ? Analog Input or Output Module wiring should be shielded to further reduce noise coupling. ? Discrete Output Module wiring often includes switch-inductive loads that produce noise spikes when switched off. ? DC Input Module wiring, although suppressed internally, are low-level inputs that should be further protected against noise coupling by observing these wiring practices. ? Communications Cables are noise-producing wiring cables from which wiring such as Genius bus or serial cables should be kept away. PACSystems* RX3i System Manual Section 3 GFK-2314T Sept. 2019 Installation 26 Where AC or Output wiring bundles must pass near noise-sensitive signal wiring bundles, avoid running them beside each other. If they have to cross, route them a right angle to minimize coupling between them. 2.4.2.1 Grouping of Similar Modules to Keep Wires Segregated If practical, grouping similar modules together on the backplanes can help keep wiring segregated. For example, one backplane could contain AC modules only, while another could contain DC modules only, with further grouping by input and output types. 2.5 System Grounding All components of a control system and the devices it is controlling must be properly grounded. This is particularly important for the following reasons: ? A low-resistance path from all parts of a system to earth minimizes exposure to shock in the event of short circuits or equipment malfunction. ? The RX3i system requires proper grounding for correct operation. ? All backplanes grouped together in the PLC system must have a common ground connection.
