RELIANCE 45C992邏輯順序卡件庫存

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型號：RELIANCE 45C992
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主營DCS控制系統(tǒng)備件，PLC系統(tǒng)備件及機器人系統(tǒng)備件，
優(yōu)勢品牌：Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、Prosoft等各種進口工業(yè)零部件
RELIANCE 45C992邏輯順序卡件庫存

電梯控制系統(tǒng)由呼叫到響應形成一次工作循環(huán)，電梯工作過程可分為自檢、正常運行、強制運行等三種工作狀態(tài)，電梯在三種工作狀態(tài)之間來回切換，構成了完整的電梯工作過程。 1．電梯的自檢狀態(tài) PLC后上電，電梯運行進入自檢狀態(tài)，檢測項目為：（1）供電電壓正常。（2）各控制回路電源電壓正常。（3）相序正確，相序繼電器吸合，安全回路中各開關接觸良好，急停繼電器可靠吸合。（4）關門到位后，各廳門門鎖和轎門門鎖觸點吸合正常，保證門鎖繼電器可靠吸合。（5）開、關門回路正常。（6）電梯制動器動作正?？煽俊?（7）井道中各開關位置正確，動作可靠。（8）上、下限位開關，上、下極限開關位置正確，動作可靠。（9）變頻器處于正常工作狀態(tài)，準備就緒信號輸出有效。（10）PLC處于正常工作狀態(tài)，其運行模式開關處于RUN狀態(tài)。在以上條件都得到滿足后，電梯才可以進入正常運行狀態(tài)，否則，無法進行正常運行。 2．電梯的正常運行狀態(tài) 電梯完成一個呼叫響應的步驟如下：（1）電梯在檢測到門廳或轎箱的召喚信號后將此樓層信號與轎箱所在樓層信號比較，通過選向模塊進行運行選向。（2）電梯開始起動，通過變頻器驅動電機拖動轎箱運動。轎箱運動速度由低速轉變?yōu)橹兴僭俎D變?yōu)楦咚?，并以高速運行至目標層。（3）當電梯檢測到目標層減速點后，電梯進入減速狀態(tài)，由高速變?yōu)榈退伲⒁缘退龠\行至平層點停止。（4）平層后，經過一定延時開門，直至碰到開門到位行程開關；再經過一定延時后關門，直到安全觸板開關動作。 3．電梯強制運行狀態(tài) （1）檢修運行當電梯的初始位置需要調整或電梯需要檢修時，應設置一種狀態(tài)使電梯處于該狀態(tài)時不響應正常的呼叫，并能移動到導軌上、下行極限點間的任意位置。檢修時，打開檢修開關，PLC程序進入檢修模式，電梯以檢修速度運行。按住強迫上（下）行按鈕，這時上（下）行繼電器吸合，同時抱閘打開，變頻器收到方向信號后，電梯啟動并以檢修速度運行。（2）消防運行消防返回狀態(tài)：火災時，設在大廳的消防開關合上后，消除內選和外呼信號，電梯向下返回消防層站，在返回消防層站的過程中，電梯不應答任何內選和外呼信號。消防員專用狀態(tài)：到達消防層后，電梯進入消防員專用狀態(tài)，每次只應答一個內選，且只有一直按住內選按鈕，直到關好門后此內選信號才被登記。此狀態(tài)下，外呼信號不登記。（3）泊梯泊梯開關閉合，進入泊梯狀態(tài)。若電梯不在泊梯層，則消除內選和外呼信號，自動返回泊梯層，然后關門，斷開電源繼電器和變頻器電源接觸器，變頻器斷電，進入泊梯狀態(tài)。五、控制系統(tǒng)軟件設計 1．軟件流程
2．模塊化編程電梯控制系統(tǒng)是集選式控制方式，適合采用模塊化編程方法，下面介紹幾個模塊的梯形圖程序：（1）電梯自檢模塊：安全回路中各開關接觸良好，安全回路信號（10001）輸入，安全繼電器（01169）閉合。當電梯開關門完成（01037），關門到位<PLC
,人機控制，高速并條機的工藝設計要求和程序概要。
1 前言
棉紡工序關鍵-并條機能適應純棉紡、棉型化纖及中長纖維的純紡與混紡等多種工藝的并合牽伸，以提高棉條長片段均勻度及纖維的伸直平行，使不同質量的纖維在棉條中的混合更均勻?？捎糜诰岷笠坏啦l，縮短了流程，具有較好的熟條質量，尤其是降低重量不勻率，改善條干CV值均有明顯效果，其質量指標能達到相關烏斯特統(tǒng)計值25％水平。
國產新型高速并條機設計速度在600-800m／min或以上，實開車速應達到400m／min,國產新型高速并條機大多為雙眼，單眼并條機已研制成功。
2.傳動系統(tǒng)
2．1 主電機可為雙速電機，大多均為變頻電機，其調速方便、準確，啟動平穩(wěn)，開速時間可調且節(jié)電效果明顯。一般電機帶電磁制動，制動過程平穩(wěn)可靠，制動時間≤0．3秒。
2．2 牽引系統(tǒng)均用同步齒形帶、導條羅拉采用平皮帶傳動，減少了傳動級數(shù)，提高了傳動、柔韌性和可靠性，穩(wěn)定了牽伸效果，降低了噪聲，能消除由于開關車造成的粗細節(jié)，給紡紗質量提供了保證。The elevator control system forms a working cycle from call to response. The elevator working process can be divided into three working states: self inspection, normal operation and forced operation. The elevator switches back and forth between the three working states to form a complete elevator working process. 1. The self inspection status of the elevator is powered on after PLC, and the elevator runs into the self inspection status. The inspection items are: (1) The power supply voltage is normal. (2) The power supply voltage of each control circuit is normal. (3) The phase sequence is correct, the phase sequence relay is closed, the switches in the safety circuit are in good contact, and the emergency stop relay is closed reliably. (4) After the door is closed in place, the contacts of each hall door lock and car door lock are pulled in normally to ensure that the door lock relay is pulled in reliably. (5) The opening and closing circuits are normal. (6) The elevator brake operates normally and reliably. (7) Each switch in the hoistway is in correct position and operates reliably. (8) Upper and lower limit switches, upper and lower limit switches have correct positions and reliable actions. (9) The frequency converter is in normal working condition, and the ready signal output is valid. (10) PLC is in normal working state, and its operation mode switch is in RUN state. After the above conditions are met, the elevator can enter the normal operation state, otherwise, it cannot operate normally. 2. In the normal operation state of the elevator, the steps for the elevator to complete a call response are as follows:. (2) The elevator starts, and the motor driven by the frequency converter drives the car to move. The moving speed of the car is changed from low speed to medium speed and then to high speed, and it runs to the target floor at high speed. (3) When the elevator detects the deceleration point of the target floor, it enters the deceleration state, changes from high speed to low speed, and stops at the leveling point at low speed. (4) After leveling, open the door after a certain delay until reaching the travel switch of opening the door in place; After a certain delay, close the door until the safety touch switch acts. 3. Elevator forced operation state (1) Maintenance operation When the initial position of the elevator needs to be adjusted or the elevator needs to be repaired, a state should be set so that the elevator does not respond to normal calls when in this state, and can move to any position between the upper and lower limit points of the guide rail. During maintenance, turn on the maintenance switch, the PLC program enters the maintenance mode, and the elevator runs at the maintenance speed. Press and hold the forced up (down) button, then the up (down) relay is closed, and the holding brake is opened at the same time. After the frequency converter receives the direction signal, the elevator starts and runs at the maintenance speed. (2) Fire fighting return status of fire fighting operation: in case of fire, after the fire switch set in the hall is closed, the internal selection and external call signals are eliminated, and the elevator returns to the fire floor station downward. During the process of returning to the fire floor station, the elevator does not respond to any internal selection and external call signals. Special status for firefighters: after arriving at the fire floor, the elevator enters the special status for firefighters. Only one internal selection is answered each time, and the internal selection signal is registered only after the internal selection button is pressed and held until the door is closed. In this state, the outbound call signal is not registered. (3) The parking ladder switch is closed to enter the parking ladder state. If the elevator is not on the parking floor, eliminate the internal selection and external call signals, automatically return to the parking floor, then close the door, disconnect the power relay and the inverter power contactor, and the inverter is powered off to enter the parking state. 5、 Control system software design 1. Software flow
2. Modular programming The elevator control system is a centralized selection control mode, which is suitable for modular programming. The ladder program of several modules is introduced below: (1) Elevator self inspection module: all switches in the safety circuit are in good contact, the safety circuit signal (10001) is input, and the safety relay (01169) is closed. When the elevator door is opened and closed (01037), the door is closed in place<PLC
, man-machine control, process design requirements and program outline of high-speed drawing frame.
1 Preface
The key of cotton spinning process - drawing can adapt to the combined drafting of various processes such as pure cotton spinning, pure spinning and blending of cotton type chemical fiber and medium long fiber, so as to improve the evenness of long sliver segments and the straightness and parallelism of fibers, and make the mixing of fibers of different quality more uniform in the sliver. It can be used for one drawing after combing, which shortens the process and has good sliver quality, especially for reducing the weight unevenness and improving the CV value of sliver. Its quality index can reach the level of 25% of the relevant Uster statistical value.
The design speed of the new domestic high-speed drawing frame is 600-800 m/min or above, and the actual opening speed should reach 400 m/min. Most of the new domestic high-speed drawing frames are double eyes, and single eye drawing frames have been successfully developed.
2. Transmission system
2.1 Main
electric machinery
It can be a double speed motor, most of which are variable frequency motors. Its speed regulation is convenient and accurate, the startup is stable, the speed opening time is adjustable, and the power saving effect is obvious. Generally, the motor is equipped with electromagnetic braking, the braking process is stable and reliable, and the braking time is ≤ 0.3s.
2.2 The traction system is driven by synchronous toothed belt and the guide roller is driven by flat belt, which reduces the number of transmission stages, improves the transmission accuracy, flexibility and reliability, stabilizes the drafting effect, reduces the noise, eliminates the coarse and fine knots caused by turning on and off, and ensures the spinning quality.

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