CSA464AE ABB 电路板模块

CSA464AE HIEE400106R0001 电路板模块 CSA464AE 我们在维修电路板时，可以根据电路板电路块的结构组成将电路板划分成一块块单元电路然后判断是那一个电路块出现的故喧，在去查找锁定的电路块中是哪一个电子元件损坏，然后采用同型号同规格的电子元件进行更换，将发生故喧的电路板维修好。
那么我们电路板中电路具体分为哪些电路块，怎样判断各电路块是否存在故障、我们又该怎样查呢?CSA464AE HIEE400106R0001 电路板模块 CSA464AE 在电路板中，不管是什么类型的电路板基本上都是由: 电源给应电路、输入接口电路、微理器控制电路、输出接口电路、显示电路、保护电路和通信电路等7大部分电路组成，只要咱们掌握了这七大类的电路组成结构和控制原理，知道每类电路的结构织成特点和关键部件，影在电路板中判 渐出每部分由路是星于那一类由路。孰采每一类由路的为信现律和特点，新可以针对各种举型的电路板进行维修了

CSA464AE

CSA464AE HIEE400106R0001 电路板模块 CSA464AE 电源供应电路: 电源供应电路部分电路是向整个电路板中各单元电路提供能量的一部分电路，它工作在高电压、大电流的环境下，是最容易出故障的一部分电路电源供应电路的功用是:将220VAC或380VA(交流电转换成电路板所的各种不同等级、输出电乐定的5V、12.15V、18V、24等级的直流电。
CSA464AE HIEE400106R0001 电路板模块 CSA464AE 输入接口电路: 输入接口电路是电路板和外界进行信息交换和沟通的一部分电路，它可以将人们想要对电路板所说的话或要办的事转化成电路板中微处理器能够识别的电信号。例如:我们在监控温度高低时，你如果用咱们平常人与人交流的语言说给微处理器听，温度高了，请把它调低一些，微处理是听不懂咱们说的话的，这时，我们可以通过接口电路先用热敏电阻或热电偶元件将温度信号转成电信号，然后在对所转换出电信号进行处理，就可以得到微处理器可以识别的电信号了。这样的话微处理器明白了我们要它处理的事项后他就可以按照我们的意图去做了。其它的像光照度、压力、风力、液位、位置、等信号都是同样道理。
处理单元CSA464AE HIEE400106R0001 包括:源处理器,经由第一通信线路与系统通信总线耦接;备份处理器,经由第二通信线路与系统通信总线耦接;CSA464AE HIEE400106R0001 以及微处理器间通信通道,用于在源处理器与备份处理器之间的通信.备份处理器CSA464AE HIEE400106R0001 通过监控第一通信电路以监控源处理器发送的通信消息来监控源处理器的故障.备份处理器响应于在预定持续时间在第一通信线路上不存在通信消息来确定源处理器的故障.备份处理器响应于该故障接管对处理单元通信的控制.采用本公开的方案,能够提供对通信故障的稳健有效的一致检测.

CSA464AE

CSA464AE HIEE400106R0001 Circuit board module CSA464AE When we repair the circuit board, we can divide the circuit board into a block of unit circuits according to the structure of the circuit board block, and then determine which circuit block appears, and which electronic component is damaged in the locked circuit block. Then use the same type of electronic components with the same specifications to replace, the circuit board will be repaired.
So what circuit blocks are the circuits in our circuit board divided into, how to judge whether there is a fault in each circuit block, and how should we check it? CSA464AE HIEE400106R0001 Circuit board module CSA464AE In the circuit board, no matter what type of circuit board is basically made of: Power supply circuit, input interface circuit, microcontroller control circuit, output interface circuit, display circuit, protection circuit and communication circuit, etc. 7 most of the circuit composition, as long as we master the seven categories of circuit structure and control principle, know the structure of each type of circuit weaving characteristics and key components, the image in the circuit board is judged by each part of the road is star in that type of road. Based on the law and characteristics of each type of road, the new can be repaired for various types of circuit boards
CSA464AE HIEE400106R0001 Board Module CSA464AE Power supply circuit: The power supply circuit is a part of the circuit that provides energy to each unit circuit in the entire circuit board. It works in a high voltage and high current environment. The function of the power supply circuit is to convert 220VAC or 380VA(alternating current) into various levels of the circuit board, and output 5V, 12.15V, 18V, and 24 levels of direct current of the electric music.
CSA464AE HIEE400106R0001 Circuit board module CSA464AE Input interface circuit: The input interface circuit is a part of the circuit board and the outside world for information exchange and communication, which can convert what people want to say or do to the circuit board into an electrical signal that the microprocessor in the circuit board can recognize. For example: when we are monitoring the temperature, if you use our ordinary human communication language to say to the microprocessor, the temperature is high, please turn it down a little, the microprocessor is not able to understand what we say, at this time, we can first use the interface circuit to convert the temperature signal into an electrical signal, and then process the converted electrical signal. You get an electrical signal that the microprocessor can recognize. That way the microprocessor knows what we want it to do and it can do what we want it to do. The same is true of other signals such as illumination, pressure, wind, liquid level, position, and so on.
The processing unit CSA464AE HIEE400106R0001 comprises: source processor, coupled with the system communication bus through the first communication line; The backup processor is coupled with the system communication bus through the second communication line; CSA464AE HIEE400106R0001 and inter-microprocessor communication channel for communication between the source processor and backup processor. Backup processor CSA464AE HIEE400106R0001 Monitors source processor faults by monitoring the first communication circuit to monitor the communication messages sent by the source processor. The backup processor responds to the failure of the source processor by not having a communication message on the first communication line for a predetermined duration. The backup processor takes over control of the processing unit communication in response to this failure. The scheme can provide robust and effective consistent detection of communication faults.

CSA464AE