產品內容介紹
Prosoft 3100-MCM通信接口模塊
即時檢測模式（當使用F3PU16-0N、F3PU26-0N、F3PU36-0N或F3PU36-0.S時）z瞬時電源故障檢測-即使電源瞬時故障持續時間不超過2毫秒（未檢測到的瞬時電源故障），系統仍會繼續運行而不中斷如果發生超過2 ms小于10 ms的電源故障，控制器可能會識別或不識別瞬時電源故障情況，因為存在不確定性。當控制器檢測到瞬時電源故障時，它保持或重置其輸出（根據停止時設置的輸出），暫停程序執行，然后打開FAIL觸點。（有關FAIL觸點工作原理的詳細信息，請參閱本手冊第A2.3節）。它還將瞬時電源故障發生的日期和時間記錄到CPU的錯誤日志文件中。檢測到瞬時電源故障后，控制器以重置重啟模式重新啟動控制器始終檢測超過10 ms的任何瞬時功率損失情況。z電源故障檢測當CPU工作電壓（+5V）低于額定電壓的95%時，控制器的整個功能被禁用。z自動恢復當電源從瞬時電源故障狀態恢復，CPU工作電壓（+5V）上升到額定電壓的95%以上時，控制器自動恢復正常操作。檢測到電源故障后，控制器以重置重啟模式重新啟動。
噪聲控制注意事項
將電纜與動力線路分開布置動力線路，使其與FA-M3和連接至FA-M3的所有信號線的距離不小于20cm。如果這不可行，則通過接地金屬導管布置動力線路。保護電源模塊免受噪音影響-將電源線組成雙絞線，并以盡可能短的距離布線FA-M3的電源模塊包含一個噪聲濾波器，因此具有足夠的噪聲抗擾度，足以滿足一般應用中預期的噪聲水平。但是，如果模塊要在異常嘈雜的環境中使用，則應在電源和模塊之間安裝額外的噪聲濾波器或噪聲截止變壓器。保護特殊模塊免受噪聲影響-模擬和通信模塊設計用于處理低電平或高速信號。將這些信號線與其他I/O信號線的距離超過10 cm，并將其穿過單獨的電纜管道區分模擬信號和噪聲尤其困難，當將與噪聲重疊的模擬信號轉換為數字信號時，這將導致錯誤。作為預防措施，將模擬信號電纜鋪設在遠離噪聲源的地方，以避免噪聲重疊，并插入濾波器（例如濾波器電路、濾波器或軟件計算濾波器）以衰減噪聲始終只使用指定的電纜，并特別注意其接地和互連的布線方式。有關更多詳細信息，請參閱每個模塊的說明手冊。
Immediate Detection Mode
(when F3PU16-0N, F3PU26-0N, F3PU36-0N or F3PU36-0S is used) z Momentary Power Failure Detection - System operation continues without interruption even if the power fails momentarily for no longer than 2 ms (undetected momentary power failure). - If a power failure longer than 2 ms and less than 10 ms occurs, the controller may or may not recognize a momentary power failure condition because an uncertainty is involved. When the controller detects a momentary power failure, it holds or resets its outputs (in accordance with the output set at stop) , it suspends program execution, and then it turns on the FAIL contact. (Refer to Section A2.3 of this manual for details on how the FAIL contact works). It also records the date and time at which the momentary power failure occurred into the error log file in the CPU. The controller restarts in the reset restart mode after a momentary power failure is detected. - The controller always detects any momentary power loss conditions that are longer than 10 ms. z Power Failure Detection The entire functionality of the controller is disabled when the CPU operating voltage (+5V) falls below 95% of the rated voltage. z Automatic Recovery The controller resumes normal operation automatically when the power recovers from a momentary power failure condition and the CPU operating voltage (+5V) rises above 95% of the rated voltage. The controller restarts in the reset restart mode following the detection of a power failure condition.
Noise Control Considerations
Separating Cables from Motive-power Lines Route motive-power lines so that they are no closer than 20 cm to the FA-M3 and all signal lines connected to the FA-M3. If this is not feasible, route the motive-power lines through a grounded metal conduit.Protecting Power Supply Module against Noise - Form the power line into a twisted pair and route it through the shortest distance possible. - The power supply module of the FA-M3 contains a noise filter and therefore has a noise immunity level sufficient for noise levels anticipated in general applications. If the module is to be used in an exceptionally noisy environment however, an additional noise filter or a noise cutoff transformer should be located between the power source and the module.Protecting Special Modules against Noise - Analog and communication modules are designed to handle low-level or high-speed signals. Place the lines of these signals at a distance of more than 10 cm away from other I/O signal lines and route them through separate cable ducts. - It is especially difficult to distinguish analog signals and noise and this will cause errors when an analog signal overlapped by noise is converted into a digital signal. As a precaution, lay the analog signal cables away from noise sources such that noise overlapping will not happen and insert a filter (such as a filter circuit, a filter or software calculation filter) to attenuate noise. - Always use specified cables only and be especially careful about the way they are routed for grounding and interconnection. For further details, see the instruction manual of each module.
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