| 詳細(xì)參數(shù) | |||
|---|---|---|---|
| 品牌 | Triconex | 型號 | AI3351 |
| 結(jié)構(gòu)形式 | 模塊式 | 安裝方式 | 控制室安裝 |
| LD指令處理器 | 硬PLC | 功能 | 處理器模塊 |
| 工作電壓 | 電源組24VDC | 輸出頻率 | 10/100Mbps |
| 產(chǎn)品認(rèn)證 | CE | 加工定制 | 否 |
| 重量 | 7.13磅 | 產(chǎn)地 | 美國 |
TRICONEX AI3351
AI3351應(yīng)將互聯(lián)設(shè)備共地；否則，如果接收端有較高共模輸入，就有可能損壞接收端器件。
多數(shù)情況下，連接AI3351通信鏈路時(shí)只需簡單地用一對雙絞線將各個(gè)接口的“A”、“B”端分別連在一起，而將信號地空懸——這種連接方法在許多場合是能正常工作的，但應(yīng)注意以下兩個(gè)問題：
A
(1)共模干擾問題：AI3351接口采用差分方式接收輸入信號，并不需要相對于某個(gè)參照點(diǎn)來檢測信號，系統(tǒng)只需檢測兩根輸入線之間的電位差就可以了。但人們往往忽視了接收器有一定的共模電壓范圍，RS-485接收器共模電壓范圍為-7～+12V，只有滿足上述條件，整個(gè)網(wǎng)絡(luò)才能正常工作。當(dāng)通信線路中模電壓超出該范圍時(shí)就會(huì)影響通信的穩(wěn)定可靠，甚至損壞接口。
(2)AI3351電磁輻射問題：驅(qū)動(dòng)器輸出信號中的共模部分需要一個(gè)返回通道，如果沒有一個(gè)低阻的返回通道(信號地)，就會(huì)以輻射的形式返回源端，整個(gè)總線就會(huì)像一個(gè)巨大的天線向外輻射電磁波。
Ai3351 shall ground the interconnected equipment together; Otherwise, if the receiver has a high common mode b, the receiver device may be damaged.
In most cases, when connecting the ai3351 communication b, it is only necessary to simply connect the "a" and "B" ends of each interface with a pair of twisted pair to suspend the signal in the air - this connection b can work normally in many occasions, but the following two problems should be paid attention to:Common mode interference problem: the ai3351 interface receives the b signal in a differential way, and does not need to detect the signal relative to a reference point. The system only needs to detect the potential difference between two b lines. However, people often ignore that the receiver has a certain common mode voltage range. The common mode voltage range of RS-485 receiver is - 7 ~ + 12V. The whole network can work normally only if the above conditions are met. When the common mode voltage of the communication line exceeds this range, it will affect the stability and reliability of the communication, and even damage the interface.
Ai3351 electromagnetic radiation problem: the common mode part of the driver output signal needs a return channel. If there is no low resistance return channel (signal ground), it will return to the source in the b of radiation, and the whole bus will radiate electromagnetic waves outward like a huge antenna.
我們的優(yōu)勢
1. Bently Nevada：3500 系列/3300 系列
2. ABB：PLC & DCS 模塊，DSQC 系列，Bailey INFI 90
4. GE FANUC：IC693/IC695/IC697/IC698 / IS200 / DS200
5. Honeywell：10100/2/1 , 51304511-200, ACX631 51198947-100B, 80363969-150 等
6. Woodward:9907-164/162/167, 5464-654, 9907-014
7. Invensys Triconex: 3008, 3503E, 4351B, 36 等
8. ICS TRIPLEX: T8480, T8310, T8461, T8431, T8311..
其他品牌: Foxboro / Schneider / EPRO / Emerson/ Siemens MOORE,6ES5 / 6GK / 6DD / 6AR
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