GE IS220PAICH2A

咨詢熱線--17750626260　

PLC的梯形圖與傳統(tǒng)的電氣原理圖非常相似，信號的輸入/輸出形式及控制功能基本上也是相同的；
它們的不同之處主要表現(xiàn)在：
（1）控制邏輯——繼電器控制邏輯采用硬接線邏輯，利用繼電器機械觸點的串聯(lián)或并聯(lián)，及時間繼電器等組合成控制邏輯，其接線多而復雜、體積大、功耗大、故障率高，靈活性和擴展性很差。而PLC采用存儲器邏輯，其控制邏輯以程序方式存儲在內存中，靈活性和擴展性都很好。
（2）工作方式——繼電器控制線路中各繼電器同時都處于受控狀態(tài)，屬于并行工作方式。而PLC的控制邏輯中，各內部器件都處于周期性循環(huán)掃描過程中，各種邏輯、數(shù)值輸出的結果都是按照在程序中的前后順序計算得出的，所以屬于串行工作方式。

"DANGER OXYGEN" WARNING SIGN, LOT OF 5
 
SICK 40" 30-MGS SAFETY LIGHT CURTAIN MGSE90-12B
 
TELEMECANIQUE 12-230V 10W GREEN STEADY UNIT XVB C33 NNB
 
TELEMECANIQUE 12-230V 10W BLUE STEADY LIGHT, VXB C36, NNB
 
SQUARE D 600V 30A HEAVY DUTY SAFETY SWITCH CHU361AWK-EI1 NIB
 
LITHONIA LIGHTING TITAN SERIES BATTERY POWERED LIGHTING ELT16 N R1
 
FIREYE FLAME MONITOR EB-700 ENG CODE 04
 
WIEGMANN ELECTRIC BOX A080804
 
ONGUARD 3XL BIB OVERALL W/ PLAIN FRONT, 76050, NNB
 
SAFE-T-ALERT 12VDC HORN SIGNAL 0712-002 SERIES SY100
 
WESTINGHOUSE 600V 100A TWIN 3-PHASE FUSIBLE PANELBOARD SWITCH FDPT3633R
 
OSBORN OG-80-2 CLASSIC SCISSOR TYPE LOCK-OUT, NIB
 
OMRON LIMIT SWITCH WLCA2-55LDK13
 
STIFNECK EXTRICATION ORIGINAL & select ADJUSTABLE COLLARS
 
SALISBURY ELECRTICAL RUBBER GLOVES SZ 101/2 RED ANSI/ASTM D120 TYPE I
 
ONGUARD SMALL JACKET W/ ATTACHED HOOD, 76034, NNB
 
GUARDAIR 24" CLASSIC SAFETY AIR GUN 75LJ024AA
 
WILLSON RESPIRATOR FILTER P100 NIB BOX OF 10
 
SICK 30-MGS LIGHT CURTAIN MGSE120-12B
 
NORTH V-SAFE VS02R RED VALVE LOCKOUT LOT OF 2
 
FUJI ELECTRIC PUSH BUTTON AH30-F
 
IDEC AVLN RED PUSH BUTTON

SQUARE D 600V 100A STAINLESS FUSIBLE DISCONNECT SWITCH H-363DS SER. D
 
ADAPTALIGHT STACKABLE BEACON LIGHTING SYSTEM 101BS-G
 
LITHONIA REPLACEMENT LENS DDM48 NIB
 
STI MICROSAFE LIGHT CURTAIN TRANSMITTER MOF47-14-900-X1 / 70181-1054
 
SQUARE D 30A 600VAC 600VDC TYPE 1 SER. E1 SAFETY SWITCH HU361
 
ALLEN BRADLEY 800MR-JX5K SER A NIB
 
ENCON GREY CHEMICAL SPLASH/HIGH IMPACT PROTECTIVE GOGGLE 503Q
 
LOCK CORPORATION LOCKER ROOM LOCK B5C 1516 NIB
 
REXROTH SHOCK ABSORBER 12W48 3701204000 NIB
 
MARS * TRI-LIGHT RED * MV110UL
 
SALISBURY ELECRTICAL RUBBER GLOVES SZ 8 BLUE ANSI/ASTM D120 TYPE II
 
DBI SALA 3" TIE OFF ADAPTER 967-3
 
AUTOPULSE * 4XAMB FIRE ALARM CONTROL BOARD REV. D * XAMB-PCC BD 03303
 
ADEMCO ALARM CONTROL BOARD
 
EFECTOR 200 FIBRE OPTICS E20606 , NIB
 
PROCARE XL KNEE SUPPORT W/ PATELLA 79-82638
 
VICTOR EQUIPMENT COMPANY REGULATOR SR-260A
 
SCC 941-RT-24 40 WATTS HORN SPEAKER
 
SCHMERSAL AZ16ZV, INDUSTRIAL SAFETY INTERLOCK SWITCH
 
M&C EC COOLER ALARM CIRCUIT BOARD 11.89
 
MINERALLAC 2" RIGID 2 HOLE COUNDUIT & PIPE STRAP 290 BOX OF 50
 
ALLEN BRADLEY PALM BUTTOM 800P-F1CGA SERIES E
 
SMC VPN-6-FHG-D SOLENOID VALVE CD24V NIB
 
ADAPTABEACON 50/60H 120VAC VISUAL SIGNALING APPLIANCE 49A-N5-40WH 104575
 
COOPER LIGHTING EMERGENCY NIB
 
AZZ HAZARDOUS LOCATION LUMINAIRE LIGHTING FIXTURE SAF15S04GGPSAF
 
LIGHT-PAK EMERGENCY LIGHTING EQUIPMENT N2LPS6222
 
EAGLE MANUFACTURING 24G FLAMMABLE SAFETY STORAGE CABINET 1923
 
SICK 40" LIGHT CURTAIN TRANSMITTER C40S-0903CA010
 
TELEMECANIQUE * XVB C4B4 XVB C38 STACK LIGHT MISSING CAP * XVB C21
 
SALISBURY ELECRTICLA GLOVES SZ 10 RED ANSI/ASTM D120 TYPE I NNB
 
MSA COMBINATION CARTRIDGE GME-H / 491630 NIB
 
SQUARE D * HEAVY DUTY FUSED DISCONNECT 200AMP 600VAC * H364
 
EDWARDS ADAPTATONE 120VAC .29A AUDIBLE SIGNAL P-047550-1550 / 5532B-N5
 
SICK 30-MGS LIGHT CURTAIN MGSS120-12 *PAINT*
 
SALISBURY ELECRTICAL RUBBER GLOVES SZ 10 BLUE ANSI/ASTM D120 TYPE II NNB
 
NATIONAL MATSUSHITA ECOLOGY FAN FILTER UNIT BV-R01MH1KIA / IT-240240ES-SNK?LR
 
SICK LIGHT CURTAIN TRANSMITTER C40S-0903CA010
 
KEYENCE PW-41 NIB
 
ANTUIES CONTROLS -17-6.0"WC 8024204025 CONTROL SWITCH
 
RACAL HEALTH & SAFETY INC. BREATHE EASY AIRSTREAM TURBO UNIT, 022-00-03
 
EDWARDS FIRE ALARM STATIONS 270 NIB
 
D.G. CONTROLS DEEGEE STROBE LIGHT XFF/SS/AC/115/D?H/11.I
 
CLARK MATERIAL HANDLING TRAY 2776599 NIB
 
FEDERAL SIGNAL CORP. SELECTONE 120V 0.03A SIREN SPEAKER 50GC SER-C1
 
GENTEX 24VDC RED WALL SPEAKER W/ STROBE SSPK24WLPR
 
ITE KIRK INTERLOCK W/ KEY, 45-79819