數(shù)字量信號連接應(yīng)注意的問題           

變頻器的輸入信號中包括對運行/ 停止、正轉(zhuǎn)/ 反轉(zhuǎn)、點動等運行狀態(tài)進行操作的數(shù)字量輸入信號（開關(guān)型指令信號），這些信號常來自PLC 的數(shù)字量輸出信號。PLC 通常利用其內(nèi)部的繼電器接點（繼電器輸出型P L C ）或具有開關(guān)特性的元器件（晶體管輸出型PLC）與變頻器相連，得到運行狀態(tài)指令，如圖1 和圖2 所示。在進行數(shù)字量信號的連接時應(yīng)注意：

（1）使用繼電器輸出型P L C 與變頻器相連時，應(yīng)注意接觸不良常帶來變頻器誤動作，因此在實際接線中一定要注意連接可靠。

（2）使用晶體管輸出型P L C 與變頻器相連時，應(yīng)注意晶體管本身的電壓的高低、電流的大小等限制條件在其范圍內(nèi)，保證系統(tǒng)的可靠性。

（3）設(shè)計變頻器的輸入信號電路時，應(yīng)盡量避免采用繼電器等感性負載，因繼電器開閉產(chǎn)生的浪涌電流可能引起變頻器的誤動作。

聯(lián)系人：黃生(銷售工程師) 
移動電話:18030263579 
固話:0592-6895320 
QQ：2472574325

低價甩賣   



 
 



GE Fanuc IC660EBA100K 115V Analog In/Out IC660EBA100-K

Honeywell ISSC 620-1690 Processor Rack PLC 6201690C

525 kW Waukesha Natural Gas Generator Set VHP 3600GSI

Furnas System 89 Size 1 Breaker Type Starter MCC Bucket

ISSC 621-9990 IPC I/O Rack/Chassis 6219990

Omron S82L-1024 24V/4.6A Power Supply S82L1024

150-F201NZD熱賣

150-F201NZD熱賣

150-F201NZD熱賣

Perkins UMC2004GACA Digital Weight Indicator Stainless 

Allen Bradley AB 150-A24NBDB SMC MCC Bucket 30A 10 HP

Fischer Porter 53MC5412A25BACXDXCXX Controller 53MC5

Fischer Porter 53MC5412A25BAXXDXCXX Controller 53MC5

Fischer Porter 53MC5412A24BBXXXXXXX Controller 53MC5

Perkins 4328A Digital Weight Indicator Stainless Steel

Modicon 140 CPU 113-02 CPU 256K Controller 140CPU11302

Federal Pacific 145 kVA 460/460Y/266 3 ph 145kVA 460 Y 

Omron S82G-3312 12V/2.5A Power Supply S82G3312

EI Ratio 200:5A 64201 64-201 600 Current Transformer CT

Endress Hauser RIA450-S111 Process Indicator Loop

ABB 53MC5412A25BACXDXCXX Controller 53MC5

Omron S82G-0324 24V/1.3A Power Supply S82G0324

Honeywell ISSC 620-0036 Processor Power Supply 6200036

Modicon 140 CPU 113-02 CPU 256K Controller 140CPU11302

Cutler Hammer Eaton Breaker JS JS360150A 150 Amp A 150A

Cutler Hammer Eaton Breaker JS360125A 125 Amp A

Cutler Hammer Eaton Breaker FS FS340070A 70Amp A 70A

Cutler Hammer Eaton Breaker NS361200A 1200 Amp 1200A A

Cutler Hammer Eaton Breaker FC FC3015 15 Amp 15A A

Square D CT 200:5A 600V 74 74-201 Current Transformer

Omron S82G-0305 5V/6A Power Supply S82G0305

Westinghouse DB25 DB 25 600 Amp Digitrip RMS/R 500 CLS

Foxboro I/A P0400VR Control Processor P0400 VR PO400VR

Cutler Hammer Westinghouse HFD 65k HFD3060 60 Amp 60A A

Cutler Hammer Westinghouse EHD EHD3015L 15Amp 15 A Amp

Cutler Hammer Westinghouse EHD EHD3035L 35Amp A 35A

Cutler Hammer Westinghouse LD3600 600Amp 600 A
With Rating plug LT3600T

Cutler Hammer Westinghouse FD1020 FD 20 Amp 20Amp 20A A

Cutler Hammer Westinghouse EHD2030 30 Amp A 30A

CH Westinghouse FD FD3030L FD3030 30 Amp 30A A 30Amp

CH Westinghouse Breaker FD2050 FD 50 Amp 50Amp 50A A

Cutler Hammer Westinghouse HMCP HMCP015E0C 15 Amp 15A A

C-H CH Westinghouse HND3800T107W Optim 800 Amp 800A A

Cutler Hammer Westinghouse Breaker EHD2020 20 Amp A 20A

Cutler Hammer WH KDB KDB3400W KT3400T KDB3400 400 A Amp

Cutler Hammer Westinghouse LD LD3300 300Amp A 300A

Cutler Hammer Westinghouse FD FD3030L 30 Amp 30A A

Cutler Hammer WH HJD HJD3250F JT3200T HJD3200 200 A Amp

C-H CH Westinghouse HND3800T107W Optim 800 Amp 800A A

Cutler Hammer Westinghouse FW 3063L FW3063L 63Amp A 63A

Cutler Hammer WH HJD HJD3250F JT3150T HJD3150 150 Amp A

C-H CH Westinghouse HND3800T107W Optim 800 Amp 800A A

Cutler Hammer Westinghouse KD3400F 250 Amp A KT3250T

CH Westinghouse 1200 Amp 1200A A HND312T32W 12NES1200T

Cutler Hammer WH KDB KDB3125W KT3125T KDB3125 125 A Amp

Cutler Hammer Westinghouse GMCP GMCP003A0C 3 Amp 3 A
With DIN clip mount

Cutler Hammer Westinghouse LD LD3600F 500 Amp 500A A
DIGITRIP Trip Cat# LES3600LSI Rating plug Cat# 6LES500T

Cutler Hammer Westinghouse GMCP GMCP007C0C 7 Amp 7 A
With DIN clip mount

CH Westinghouse HND 800 Amp 800A A HND3800T32W 8NES800T

Cutler Hammer Westinghouse FD FD3025 25 Amp A 25Amp

Cutler Hammer Westinghouse FD3060L 60 Amp 60A A 60Amp

CH Westinghouse RD 1600 Amp 1600A A RD320T33W RES2000LS




Cutler Hammer Westinghouse FD FD3015L 15 Amp A 15Amp

Cutler Hammer Westinghouse GMCP060J2C 60 Amp 60A A
With DIN clip mount

Cutler Hammer Westinghouse LD LD3600F 400 Amp 400A A
TRIP UNIT Cat# LT3400T

Cutler Hammer Westinghouse HFD3015L 15A A 15Amp 15 Amp

Cutler Hammer Westinghouse HFD HFD3020L 20Amp A 20 Amp