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KDA3.3-150-3-A00-W

KDA3.3-150-3-A00-W

查找一般PLC故障的步驟是怎樣的？

PLC維修時(shí)，插好編程器，并將開(kāi)關(guān)撥到RUN位置，再根據(jù)下列步驟查找：

1）如果PLC停止在某些輸出被激勵(lì)的位置、狀態(tài)（地方），一般是處于中間狀態(tài)，則查找引起下一步操作發(fā)生的信號(hào)，編程器會(huì)顯示信號(hào)的ON/OFF狀態(tài)。

2）如果輸入信號(hào)，將編程器顯示的狀態(tài)與輸入模塊的LED指示作比較，若結(jié)果不一致，則說(shuō)明需要更換輸入模塊。更換模塊前，需要先檢查I/O擴(kuò)展電纜和相關(guān)連接是否正常。

3）如果輸入狀態(tài)與輸入模塊的LED指示一致，則比較發(fā)光二極管與輸入裝置的狀態(tài)。如果兩者不同，則需要測(cè)量一下輸入模塊。如果發(fā)現(xiàn)存在問(wèn)題，則需要更換I/O裝置、現(xiàn)場(chǎng)接線(xiàn)、電源等。否則，需要更換輸入模塊。

4）如果信號(hào)是線(xiàn)圈，沒(méi)有輸出或輸出與線(xiàn)圈的狀態(tài)不同，則需要用編程器檢查輸出的驅(qū)動(dòng)邏輯，并檢查程序清單。

5）如果信號(hào)是定時(shí)器，并停在小于999.9的非零值上，則需要更換CPU模塊。

6）如果該信號(hào)控制一個(gè)計(jì)數(shù)器，則需要先檢查控制復(fù)位的邏輯，再檢查計(jì)數(shù)器信號(hào)。然后檢查、判斷相關(guān)組件是否異常，需要更換。

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CM400DY-12NF Mitsubishi Electric HIGH POWER SWITCHING USE Transistor (1 PER)

CM400DY-12H Mitsubishi 400 A, 600 V, N-CHANNEL IGBT (1 PER)

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CM400DU-24F Mitsubishi IGBT MOD DUAL 1200V 400A (1 pER)

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CM30MD3-12H Mitsubishi 30A, 600V, N-CHANNEL IGBT (1 PER)

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CM300YE2P-12F Mitsubishi 300A, 600V, N-CHANNEL IGBT (1 Per)

CM300YE2N-12F 300 Amperes, 600 Volts Type: Three Level Inverter IGBT Module Cir

CM300HA-24H 300 A, 1200 V, N-CHANNEL IGBT By MIT

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CM300E2U-12F HIGH POWER SWITCHING USE INSULATED TYPE

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CM300DY-12NF Mitsubishi 400A 1200V IGBT Transistor High Power Switching (1 PER)

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CM300DU-24NFH IGBT MODULE, 1.2KV, 300A, Transistor Mitsubishi

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CM1800DY-34S MITSUBISHI ON CONSIGNMENT IGBT MODULE, DUAL, 1.7KV, 1.8KA (1 PER)

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CM1600HC-34H Mitsubishi 1600A, 1700V, N-CHANNEL IGBT (1 Per)

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CM150DU-24NFH 1.2KV, 150A,No. of Pins:7 (1 PER)

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CM150DC1-24NFM Mitsubishi IGBT Transistor Module (1 PER)

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CM1409-08DE (ONSEMI) ARRAY 8CH LCD/CAM EMI FLTR 16DFN FULL REEL 3000 per ROHS

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CM1400DU-24NF 1400 A, 1200 V, N-CHANNEL IGBT (1 PER)

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CM100TF-24H 100 A, 1200 V, N-CHANNEL IGBT

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CM100DY-24H 100 A, 1200 V, N-CHANNEL IGBT (1 PER)

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CM100DUS-12F Mitsubishi IGBT MOD DUAL 600V 100A F SERIES (1 PER)

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CM100DK-24E Mitsubishi IGBT Module (1 PER)

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