ABB  AO890  3BSC690072R1  模擬輸出模塊

ABB  AO890  3BSC690072R1  模擬輸出模塊

ABB  AO890  3BSC690072R1  模擬輸出模塊

3BSC690072R1 AO890 ABB冗余應(yīng)用模擬輸出模塊

歡迎選擇深圳長欣

3HAC024322-001 ABB

DSTX170 57160001-ADK ABB

DSQC625 3HAC020464-001 ABB

3ADT309600R1012 ABB

DSQC378B 3HNE00421-1 ABB

3ADT313900R1501 SDCS-CON-4 ABB

3ADT315100R1001 SDCS-POW-4 ABB

AI835A 3BSE051306R1 ABB

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主營產(chǎn)品，備件供應(yīng)，充足庫存

Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM全系列（現(xiàn)場輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、

數(shù)據(jù)通信及處理等。

Westinghouse（西屋）：1C31系列DCS系統(tǒng)、CPU、OVATION系統(tǒng)、WDPF系統(tǒng)、

WEStation系統(tǒng)備件。

Triconex（英維思）:冗余容錯控制系統(tǒng)、基于三重模件冗余（TMR）結(jié)構(gòu)的現(xiàn)代化的容錯控制器。

EMERSON（艾默生）:模塊、卡件、驅(qū)動器等各類備件。

2. Common fault handling of IPC in broadcast transmitter

2.1 COM port communication is not normal

Fault phenomenon: when communicating with other COM port equipment RS-485, it can not be sent or received, or it can not be sent, etc.

Fault analysis: Usually, when programming COM communication, it is necessary to judge the communication state of COM port in advance. Make sure that you can send data when it&＃39;s valid and receive data when it&＃39;s valid. This is called RTS communication. However, in order to facilitate programming and speed up program execution, some users did not confirm the COM port communication state before designing the hardware, and did not pay attention to the query transceiver state during programming, which is also called AUTO communication mode. Considering its versatility, usually the motherboard with COM port is RTS communication, so when used for RS-485 communication, there will be a can send can not receive or can not receive the fault phenomenon;

Solution: The simplest solution to this problem is to use the EVOC product Ark-14520 (RS232 to RS485 module). However, if it is the communication between the COM port on the motherboard, usually there will be no such problem.

2.2 LCD display is not bright

Fault phenomenon: when the case on power, LCD display without any response;

Failure analysis: the direct cause of this failure is that the LCD backlight is not lit. After the maintenance personnel used a multimeter to measure the input power supply voltage of the backlight drive panel inverter, they found that +12V was not input. When the input power supply of the backlight drive panel was cut off, the voltage was normal. It is judged that the fault is caused by short circuit of +12V power supply on the backlight drive plate.

Solution: remove the backlight drive plate with short circuit problem from the chassis, and then power it on, so that the problem can be effectively solved. If necessary, some protective measures should be taken for the backlight drive panel to avoid such problems again.