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。

XYCOM：XVME系列

Bently（本特利）：3500/3300系統(tǒng)。

Rockwell（羅克韋爾）：ICS系統(tǒng)。

ABB：PM全系列DCS系統(tǒng)、IGCT高壓變頻器系列、工業(yè)機器人備件DSQC系列、INFI 90等。

Bailey（貝利）：BRC系列DCS系統(tǒng)等。

Allen-Bradley：1756、1785、1771、1746全系列系統(tǒng)等。

Yokogawa（橫河）：CP系列等。

Honeywell（霍尼韋爾）：TK/TC/CC系統(tǒng)等。

Reliance（瑞恩）：57C系列等。

Schneider（施耐德）：140系列處理器、控制卡、電源模塊等。

Modicon（莫迪康）：AS系列PLC系統(tǒng)備件。

Siemens(西門子)：6ES5/6ES7414/6ES7415/6ES7416系列PLC系統(tǒng)備件、

Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

XYCOM：I/O、VME板和處理器等。

GE（通用電氣）：IC698/IC697全系列PLC系統(tǒng)、模塊、卡件、驅(qū)動器等各類備件。

Yaskawa（安川）：伺服控制器、伺服馬達、伺服驅(qū)動器。

Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅(qū)動模塊等。

Woodward（伍德沃德）：SPC閥位控制器、PEAK150數(shù)字控制器。

Here a / D, mostly current, or voltage, also has temperature. A in d/a, mostly voltage, or current. The change scale of voltage and current is mostly 0-5V, 0-10V, 4-20mA, and some can also deal with positive and negative values. The D and minicomputers here are mostly 8-bit binary numbers, and the medium and large ones are 12 bit binary numbers. A/d and d/a have single way and multi-channel. There are many input and output relays with multiple channels. With a/d and d/a units, the remaining processing is digital, which is not difficult for PLC with information processing ability. Medium and large PLC can be processed more strongly. It can not only add, subtract, multiply and divide numbers, but also open square and interpolation, but also carry out floating-point operation. Some PID instructions can perform share, differential and integral operations on error system, and then produce corresponding output. It can be calculated by the computer.

So it is possible to use PLC to control analog quantity.

PLC can control analog quantity, and a / D / a unit, and can control with PID or fuzzy control algorithm, which can get high quality control. The advantage of using PLC to control analog quantity is that the switch can also be controlled when the analog quantity is controlled. This advantage is not available by other controllers, or the completion of control is not as convenient as PLC. Of course, if the system is purely analog, PLC may not be better than regulator in performance price ratio.

3. For motion control

The actual physical quantity, besides the switch quantity, the analog quantity, also has the motion control. If the displacement of machine parts is often indicated by digital quantity. The useful way to control motion is NC, which is digital control skills. This is the control skills of accounting machines born in the United States in the 1950s. It is very popular and perfect today. Nowadays, the ratio of numerical control of metal cutting machine tools in advanced countries has exceeded 40% - 80%, some even higher. PLC is also based on the skills of the accounting machine, and is increasingly perfect. PLC can accept counting pulse, frequency can be as high as several K to dozens of kHz, can be accepted by a variety of methods, but also can be multi-channel. Some PLC also have pulse output function, pulse frequency can also reach dozens of K. with these two functions, plus PLC has data processing and operation ability, if equipped with corresponding sensors (such as rotary encoder) or pulse servo equipment, it can complete various control systems according to the principle of NC. PLC with high and medium gear also develops NC unit or motion unit, which can complete point control. The motion unit can also complete the interpolation of the curve, and control the curve motion. Therefore, if PLC is equipped with this unit, it can control digital quantity completely by NC method. The newly developed movement unit, even the programming language of NC skills, is also issued, which provides convenience for better digital control with PLC.