描述

（一）分析被控對象并提出控制要求

詳細分析被控對象的工藝過程及工作特點，了解被控對象機、電、液之間的配合，提出被控對象對PLC控制系統(tǒng)的控制要求，確定控制方案，擬定設(shè)計任務(wù)書。

（二）確定輸入／輸出設(shè)備

根據(jù)系統(tǒng)的控制要求，確定系統(tǒng)所需的全部輸入設(shè)備（如：按紐、位置開關(guān)、轉(zhuǎn)換開關(guān)及各種傳感器等）和輸出設(shè)備（如：接觸器、電磁閥、信號指示燈及其它執(zhí)行器等），從而確定與PLC有關(guān)的輸入/輸出設(shè)備，以確定PLC的I/O點數(shù)。

（三）選擇PLC

PLC選擇包括對PLC的機型、容量、I/O模塊、電源等的選擇，詳見本章第二節(jié)。

（四）分配I/O點并設(shè)計PLC外圍硬件線路

1.分配I/O點

畫出PLC的I/O點與輸入／輸出設(shè)備的連接圖或?qū)?yīng)關(guān)系表，該部分也可在第２步中進行。

2.設(shè)計PLC外圍硬件線路

畫出系統(tǒng)其它部分的電氣線路圖，包括主電路和未進入可編程控制器的控制電路等。

由PLC的I/O連接圖和PLC外圍電氣線路圖組成系統(tǒng)的電氣原理圖。到此為止系統(tǒng)的硬件電氣線路已經(jīng)確定。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
?
5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計算機控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動化控制系列

本特利，英維思，伍德沃德，?？怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

Woodward 8236-043 Interface 43027

Woodward 8236-144 Light Panel

Woodward 8236-144D Light Panel

Woodward 8238-002 505E Bulkhead

Woodward 8238-007 505 Bulkhead

Woodward 8238-008 505 Flush Mount

Woodward 8238-009 505E Bulkhead

Woodward 8239-001 DSM Synchronizer

Woodward 8239-002 DSM Synchronizer

Woodward 8239-005 DRFD

Woodward 8239-006 Digital Remote Final Driver

Woodward 8239-007 Digital Remote Final Driver

Woodward 8239-008 Digital Remote Final Driver

Woodward 8239-015 Digital Remote Final Driver

Woodward 8239-016 DRFD CONTROL ASSEMBLY

Woodward 8239-939

Woodward 8240-084 EGB10C governor

Woodward 8250-022 remote servo

Woodward 8250-226 EG10P p/n A8250-226

Woodward 8250-421 EG3P oil motor

Woodward 8250-501 actuator

Woodward 8250-570

Woodward 8250-807 TA-20 Actuator

Woodward 8250-818 Governor

Woodward 8256-021 EPG Actuator

Woodward 8270-092 EG-A Control Box

Woodward 8270-122 2301 Power Supply,p/n

Woodward 8270-201

Woodward 8270-741 MOTOR OPERATED POTENTIOMETER

Woodward 8270-758 2301 SIGNAL CONVERTER

Woodward 8270-768 2301 AMPLIFIER

Woodward 8271-147 Load Sensor

Woodward 8271-467 2301 Load Share and Speed Control

Woodward 8271-472 2301 Load Sharing&Speed Control

Woodward 8271-652 2301 Load Share and Speed Control

Woodward 8271-674 Power Supplies

Woodward 8271-872 Import/Export Control

Woodward 8272-385 SPM Synchronizer

Woodward 8272-394 Real Power Sensor

Woodward 8272-447 Motor Operated Pot

Woodward 8272-464

Woodward 8272-684

Woodward 8272-684

Woodward 8272-695 Real Power Sensor

Woodward 8272-720 Real Power Sensor

Woodward 8272-781A Real Power Sensor

Woodward 8273-041 ATLAS SC

Woodward 8273-276 377A7823P001,Atlas PC 2×4 Sc w/act,LV

Woodward 8280-071 Hydraulic Pump

Woodward 8280-415 Digital Speed Control

Woodward 8280-505 723 Plus

Woodward 8290-195 Flo-Tech Speed Control

Woodward 8291-020 EHPC

Woodward 8301-633 MicroNet

Woodward 8405-020

Woodward 8406-113 EGCP-3 DIGITAL CONTROL

Woodward 8406-121 EGCP-2

Woodward 8434-246 Main Chassises w/LED&P.B

Woodward 8512-135

Woodward 8516-038

Woodward 8516-039 TG 13

Woodward 8516-042 4000 RPM CCW

Woodward 8516-051 TG-13E,4000 RPM,CCW MS CONN

Woodward 8516-068 TG-13E Actuator,Pressure Drive

Woodward 8516-076 TG-13A

Woodward 8570-412 PG Dial Governor,p/n C8570-412

Woodward 8575-241

Woodward 8575-377

Woodward 8580-064 Tachometer CIT Sensor

Woodward 8580-069 On Engine Gearbox Hydraulic Pump for Metering Valves

Woodward 8580-071 Engine Gearbox Hydraulic Pump

Woodward 8580-085 Engine Gearbox Hydraulic Pump

Woodward 8580-086 Hydraulic Pump

Woodward 8900-067 Sensor

Woodward 8901-457 CPC

Woodward 8901-881 Fuel/Water Valve

Woodward 8904-289 Valve

Woodward 8904-484 Gas Shutoff Valve with Suppression

Woodward 8904-773 Control 8904-881,9902-002

Woodward 8915-004 1907 Liquid valve with TM-55 Actuator

Woodward 8915-005 3103 Gas Valve with TM-55 Actuator

Woodward 8915-011 Control Valve-TM55P/3103 Low Temp Gas Fuel

Woodward 8915-024 Liquid Fuel Valve

Woodward 8915-046 Control Valve-TM55P/1907 Liq

Woodward 8915-075 Control Valve-TM40LP/3151A Water

Woodward 8915-094 Control Valve-TM55P/3103 High Temp Gas Fuel

Woodward 8915-103 Control Valve-TM40/Liquid LP

Woodward 8915-111

Woodward 8915-1146 3103/EM35 GAS VALVE