廈門莫格電氣自動(dòng)化有限公司

TRICONEX 3664

咨詢熱線--17750626260

　　　(1)來自空間的輻射干擾
　　空間的輻射電磁場(chǎng)（EMI）主要是由電力網(wǎng)絡(luò)、電氣設(shè)備的暫態(tài)過程、雷電、無線電廣播、電視、雷達(dá)、高頻感應(yīng)加熱設(shè)備等產(chǎn)生的，通常稱為輻射干擾，其分布極為復(fù)雜。若PLC系統(tǒng)置于所射頻場(chǎng)內(nèi)，就回收到輻射干擾，其影響主要通過兩條路徑；一是直接對(duì)PLC內(nèi)部的輻射，由電路感應(yīng)產(chǎn)生干擾；而是對(duì)PLC通信內(nèi)網(wǎng)絡(luò)的輻射，由通信線路的感應(yīng)引入干擾。輻射干擾與現(xiàn)場(chǎng)設(shè)備布置及設(shè)備所產(chǎn)生的電磁場(chǎng)大小，特別是頻率有關(guān)，一般通過設(shè)置屏蔽電纜和PLC局部屏蔽及高壓泄放元件進(jìn)行保護(hù)。
　　(2)來自系統(tǒng)外引線的干擾
　　主要通過電源和信號(hào)線引入，通常稱為傳導(dǎo)干擾。這種干擾在我國工業(yè)現(xiàn)場(chǎng)較嚴(yán)重。

SQUARE D 120V RELAY LOT OF 5 8501 RS4 SER B
 
POTTER & BRUMFIELD RELAY LOT OF 2 KRPA-11DN-12
 
OMRON RELAY LOT OF 5 MK3P 101296
 
OMRON 24VDC RELAY LOT OF 10 MY4N-DC
 
OMRON OMRON DC24V SAFETY RELAY P7S-14F
 
ALLEN BRADLEY COIL TYPE NM LATCH TYPE RELAY SER D 700-NM400A1
 
OMRON RELAY BASE SOCKET LOT OF 5 P2RF-08-E
 
SIEMENS RELAY COIL 3TH2040-0AL2 3TX4411-2A
 
TELEMECANIQUE CONTROL RELAY LP1D09

SQUARE D 120V RELAY LOT OF 5 8501 KP12V20 SER D
 
ALLEN BRADLEY 115-120V COIL RELAY 700-P1200A1 SER.B *LOT OF 5*
 
LUTZE 24AC/DC 0.8W RELAY 730732 / RE 4-0732 24V
 
AGASTAT 120V 60HZ 5-50 SEC TIME DELAY RELAY 7022ADI1 103580
 
TELEMECANIQUE OVERLOAD RELAY LOT OF 4 LR2 D1306
 
ALLEN BRADLEY 120VAC 7A RELAY SER.D 700-HC14A1
 
POTTER & BRUMFIELD RELAY LOT OF 4 KRPA-11DN-24
 
SQUARE D CLASS 8501 12VDC RELAY LOT OF 3 RSD14M1P14V51 SER B 99822
 
HONEYWELL 50/60HZ 24V RELAY R8242B 1006 105134
 
ATC MOTOR DRIVEN TDR TIMER 0-60 5/10A 120/240VAC 322B
 
ALLEN BRADLEY 115-120VAC COIL RELAY 700-PK800A1 SER. B *LOT OF 5*
 
POTTER BRUMFIELD 240V PHASE RELAY PR-2436-4
 
ALLEN BRADLEY 10A RELAY LOT OF 3 700-HA33Z24 SER D
 
ALLEN BRADLEY RELAY OUTPUT FLEX W/1794-TB3 SER A 1794-0W8 SER A
 
POTTER & BRUMFIELD 120V RELAY LOT OF 4 KHU17A12
 
OMRON TIMER RELAY H3CA
 
POTTER & BRUMFIELD 120V 3A RELAY LOT OF 2 KUP-14A55-120
 
ALLEN BRADLEY CONTROL RELAY LOT OF 2 700-PK1000A1 SER B
 
SIEMENS CONTACTOR/RELAY 3T40 17-0A
 
ALLEN BRADLEY 24VAC RELAY SER.A LOT OF 3 700-HK36A24
 
SQUARE D 120V RELAY LOT OF 3 8501KP12V20
 
PILZ 24 VDC SAFETY RELAY PNOZ8
 
POTTER & BRUMFIELD 24VDC COIL GENERAL PURPOSE RELAY KUP-14D15-24 *NEW*
 
DURAKOOL MERCURY RELAY 120V 60HZ BF3-7024 NO
 
TELEMECANIQUE 10A 500V CONTROL RELAY LOT OF 5 CA3SK 20


IDEC 120V 5/60HZ RELAY LOT OF 5 RH1B-U
 
ALLEN BRADLEY CONTROL RELAY LOT OF 2 700-PK1000A1 SER B
 
SIEMENS CONTACTOR/RELAY 3T40 17-0A
 
ALLEN BRADLEY 24VAC RELAY SER.A LOT OF 3 700-HK36A24
 
SQUARE D 120V RELAY LOT OF 3 8501KP12V20
 
PILZ 24 VDC SAFETY RELAY PNOZ8
 
POTTER & BRUMFIELD 24VDC COIL GENERAL PURPOSE RELAY KUP-14D15-24 *NEW*
 
DURAKOOL MERCURY RELAY 120V 60HZ BF3-7024 NO
 
OMRON RELAY SOCKET BASE LOT OF 3 P7SA-10F / 2170EN
 
TELEMECANIQUE 10A 500V CONTROL RELAY LOT OF 5 CA3SK 20
 
OMRON RELAY BASE LOT OF 10 PYF08A
 
IDEC 120VAC RELAY LOT OF 2 RH3B-U
 
OMRON RELAY BASE LOT OF 3 P2CF-08
 
SQUARE D TIMING DELAY RELAY 9050 JCK1F10V14 SER C
 
JOKAB SAFETY SAFETY RELAY RT6-115VAC
 
OMRON 24VDC RELAY LOT OF 5 LY2
 
ALLEN BRADLEY RELAY LOT OF 5 700-HA32A1 SER A
 
ALLEN BRADLEY 10A 24V DC RELAY W/ BASE LOT OF 5 700-HA33Z24-4 SER D 101306
 
AMPERITE DELAY RELAY NIB 115N060 99555
 
SIGMA INSTRUMENTS 10A 28VDC 120VAC RELAY LOT OF 2 50R01-6AC-SC0
 
ACTION PAK 0-10VDC 4-20MA 120VAC CONTROL RELAY NIB MDL 4010-108 102759
 
GE 3-4.7A OVERLOAD RELAY MT03K 99770
 
ALLEN BRADLEY 24V 10A RELAY 700DC-F220J SER B
 
ALLEN BRADLEY 120V AC 7AMP RELAY LOT OF 6 700-HC14A1 SER D
 
POTTER & BRUMFIELD 3A 120VAC RELAY LOT OF 2 KHU17D11
 
ELESTA 12V DC RELAY SGR282Z 99817
 
AROMAT RELAY/ WITH BASE LOT OF 5 HL2-H-DC24V-F AP5222F 101299
 
SCHRACK MULTIMODE RELAY 24V 5/10A 250/400V MR203024
 
IDEC ELECTRONIC TIMER GT3A-3AD24
 
AROMAT 15A 24VDC POWER RELAY JA1A-TM-DC24V *LOT OF 3*
 
SIEMENS RELAY 22A 3TB 4117-0B
 
DAYTON RELAY 5X837F
 
STRUTHERS DUNN 120VAC RELAY LOT OF 4 C281XDX100L
 
SQUARE D CLASS 8501 RELAY LOT OF 5 KUD13M1P14V53 SER C
 
OMRON 24VDC RELAY LOT OF 5 LY2N-D2
 
OMRON RELAY MY4N W/ BASE PYF14A LOT OF 10