PLC I/O端的接线应用中应注意的问题 [779]
1．输入接线
（1）输入接线一般不要超过30米。但如果环境干扰较小，电压降不大时，输入接线可适当长些。
（2）输入/输出线不能用同一根电缆，输入/输出线要分开。
（3）尽可能采用常开触点形式连接到输入端，使编制的梯形图与继电器原理图一致，便于阅读。
2． 输出连接
（1）输出端接线分为独立输出和公共输出。在不同组中，可采用不同类型和电压等级的输出电压。但在同一组中的输出只能用同一类型、同一电压等级的电源。
（2）由于PLC的输出元件被封装在印制电路板上，并且连接至端子板，若将连接输出元件的负载短路，将烧毁印制电路板，因此，应用熔丝保护输出元件。
（3）采用继电器输出时，所承受的电感性负载的大小，会影响到继电器的使用寿命，因此，使用电感性负载时选择继电器工作寿命要长。
（4）PLC的输出负载可能产生干扰，因此要采取措施加以控制，如直流输出的续流管保护，交流输出的阻容吸收电路，晶体管及双向晶闸管输出的旁路电阻保护。
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GILBARCO MARCONI 20-0181 PV204 FUEL SITE CONTROLLER BOARD CORE
NEW EBW 320-302-02 EXTRACTOR 2'' 265 FOOT VALVE
GILBARCO MARCONI 20-4106 K-2500 POWER SUPPLY CORE
Enclosure NEMA 12 Combo Disconnect Breaker 400 Amp 70x30x20 #4 Hoffman Wiegmann
Enclosure NEMA 12 Combo Disconnect Breaker 400 Amp 70x30x19 #5 Hoffman Wiegmann
ALLEN BRADLEY 2100 100 AMP BREAKER STARTER FEEDER MCC MCCB BUCKET
MAGNETEX cimr-p5m40p7 40p71f vfd AC DRIVE 380V 460V 0-400 Hz 3.6 Amp Output
Allen Bradley 20AD2P1A0AYNNNN Power Flex 70 VFD VSD 1 HP 460v 480v
RONAN PCB X100-5168-16 R8 ULTRALARM CARD CIRCUIT BOARD #27
SIMPLEX PROCESSOR ASSY 565 565-714E CIRCUIT BOARD CARD WITH 565-803 BOARD
New Noti*Fire Notifire 911A Fire Alarm Communication Panel
BINDICATOR RF SERIES, LEVEL PROBE SNESOR, RF8H0G1A, RELAY CONTACTS: DPDT
Barber Coleman Invensys GCMA-112-0-0-2 CPU BUS Circuit Board Card
PYROTRONICS 580-184192 REV "O" VCI-5 MODEL CP-2H FIRE ALARM CIRCUIT BOARD CARD
RAMSEY CONTROLS 2488-/218M IC AC-DC CONTROL
Berger Lahr RDM543/100LTA Stepper Motor 14554310000
Fireye Flame Monitor EB-700 Base and Cover Fire Alarm
PANASONIC VALCOM TSKCOM 30127 CIRCUIT BOARD CARD
rockwell automation 9vt401-008htnn DRIVE AC Drive 3 phase 460v 480v 5hp
Square D KA 3 pole 225 amp KA36225MT1021 Circuit Breaker KA36225MT-1021 Label
omron 3g3mv-c4004 AC Drive 380v 400v 460v 1hp 1 hp
cutler hammer af93ag0c005d 380v 400v 460v ac drive 5hp 5 hp 3 phase 480v
DANFOSS GT2CN1STR0DLF00A00 7.5HP 240V 3PH AC DRIVE 6000C24
NEW VERIFONE 13788-01 32-ICON DISPLAY BOARD
New Moxa NPort 5230 V2.0 Industrial RS-232/422/485 Device Server
GE 7700 SERIES SIZE 1 MOTOR STARTER 20 AMP BREAKER MCC BUCKET PLASTIC RESET
GE 7700 SERIES SIZE 1 MOTOR STARTER 20 AMP BREAKER MCC BUCKET HOA RESET CAP
SCHAFFNER FN 258-55-07 Power Line Filter 480v FN2585507
NEW UNITED ELECTRIC TEMPERATURE CONTROLLER E122-2BSB HAZARDOUS ENCLOSURE 480v
GE 7700 SERIES SIZE 1 MOTOR STARTER 20 AMP BREAKER MCC BUCKET STANDBY LIGHT
GE 7700 SERIES SIZE 1 MOTOR STARTER 20 AMP CIRCUIT BREAKER MCC BUCKET HOA LIGHT
INDRAMAT DSM2.1-E11-01.RS SUPPLY CONTROLLER PARAMETER MODULE SOFTWARE #7 12 4 2A
texas instruments card module plc 500-5035 5005035 2462150-001 24621500001
New Orion 8104 8104-BN 8104BN Glass Ph Temperature Water Probe
NEW DANAHER CONTROL BR11A601 10 AMP 1/3 HP 5 SEC ELECTRONIC RESET TIMER
NEW Square D EJB EJB34020 3 Pole 20 Amp 480v Circuit Breaker
Reliance Electric 78438-1R 784381R Timing Relay 120V Coil
NEW ALLEN BRADLEY 700 NT400A24 AC RELAY
SIEMENS 03420 6FX1123-0AA01 6FX11230AA01 INTERFACE MEMORY MODULE CARD
NEW GILBARCO MARCONI T14588-G13R T-14588-G13R PROCESSOR BOARD
Athena Temperature Control 4000-F-E-A 0-1000f range
Square D KA 3 pole 225 amp 600v KA362251021 Circuit Breaker KA36225-1021 FLAWED
New Johnson Controls LN-PRG12B-0 Controller Programmable 12 Universal imput
posiguard sensor banner light curtain 00113603531 TRANSMITTER
Siemens HED HED63B100 3 pole 100 amp 600v Circuit Breaker
posiguard sensor banner light curtain 00113603531 RECEIVER
ALLEN BRADLEY 2100 50 AMP BREAKER FEEDER MCC MCCB BUCKET
New Siemens CC-5 Slot Cardcage 500-633037 Fire Alarm
Simplex FIRE ALARM CIRCUIT BOARD CARD 565-454 D SIGNA CARD 2 OR 6 565454D
SQUARE D POWER LOGIC CIRCUIT MONITOR CLASS 3020 CM-2350
Reliance 57C404B NETWORK COMMUNICATIONS MODULE 57C-404B WITH MANUAL
HIRATA BL SUPER PY PY2A030E PY2A030E0XXYPH2 INPUT AC200V
ADEMCO 7915 FIELD ALARM SIGNAL TESTER
CUTLER HAMMER 3PH COMBO COMBINATION MOTOR STARTER SIZE 00 NON F 120V COIL
REXROTH INDRAMAT TDM1.2-30-300W0 POWER SUPPLY AC SERVO CONTROLLER DRIVE #17
mini screen msr3624y sensor banner light curtain miniscreen
RELIANCE ELECTRIC FIELD EXCITER MODULE 0-51893-3
Alstrom Circuit Board Fire Alarm Card TRK7639250005C
NEW ALLEN BRADLEY 2100 30 AMP F SIZE 1 MOTOR STARTER MCC BUCKET LIGHT
Bailey Controls NASM03 6634416D1 Analog Slave Module +5 +- 15V Dc 2.5 VA
NEW ASCO EFX8210G1513600 120/60 110/50 1/2" PIPE 6.1 WATTS 2 WAY SOLENOID VALVE
Square D 8536SEO1S Nema Size 3 Motor Starter 600v 50 HP 90 Amp 480v Volt Coil
SQUARE D IFL IFL36060 3 POLE 60 AMP 600V BREAKER
New Stearns KIT BM6BRK BRAKE KIT 208v-230v 460v 105602100015
ITE SIEMENS 6500 SIZE 1 MOTOR STARTER 25 AMP BREAKER MCC MCCB BUCKET
New Ametek model 40 99906 Pneumatic Positioner Relay 10-100 PSI
GOULD MODICON 11-0171-04 DRIVER CIRCUIT BOARD CARD 11-0171-104
NEW GILBARCO MARCONI K94571-01 K-94571-01 PLATE KIT
NEW GILBARCO MARCONI W02417-G1R W0-2417-G1R PC BOARD
NEW GILBARCO MARCONI Q12605-01RF Q-12605-01RF CIRCUIT BOARD
GE 7700 SERIES SIZE 1 STARTER CONTACTOR 30 AMP 600V F MCC BUCKET NO DOOR
JEOL BIT IN/OUT-PB2 S000454(00) MS255034-1 YU CIRCUIT BOARD CARD
JEOL BIT IN/OUT-PBI S000453(00) MS255034-1 YU CIRCUIT BOARD CARD
SQUARE D MODEL 6 45 AMP 600V RL-04503 MTE REACTOR TRANSFORMER BUCKET
SQUARE D MODEL 6 45 AMP 600V KLR45BTB REACTOR TRANSFORMER BUCKET
JEOL BIT PORT-PB SP000428(02) MS255034-1 YU CIRCUIT BOARD CARD
JEOL ANALOG PORT-PB SP-000452(00) MS255034-2 YU CIRCUIT BOARD CARD
VFD VARIABLE SPEED DRIVE AC 460V JDB003
Siemens DC Link Module Masterdrives 6SE7090-0XP87-3CR0 Fire Alarm
CUTLER HAMMER TYPE W 60 AMP CIRCUIT BREAKER FEEDER MCC MCCB BUCKET 12"
GE 8000 SIZE 1 MOTOR STARTER 30 AMP CIRCUIT BREAKER MCC MCCB BUCKET 12''
SIEMENS MASTERDRIVES MC 6SE7090-0XP87-3CR0 DC LINK MODULE SIMOVERT
ITE MC-15A1 401160-T8 15KV 6590 CURRENT TRANSFORMER
MTS 446154-01D Circuit Board Fire Alarm
GILBARCO MARCONI W01854-G7R W0-1854-G7R REGULATOR BOARD CORE
progamable controller card module plc source omron c120f-cpua7eq c500-bat08
progamable controller card module plc melsec ay40-ul mitsubishi
GILBARCO MARCONI VERIFONE T20270-G2R G-SITE CIRCUIT BOARD CORE NO BOX
New Eaton FAZ-D1/2-NA Circuit Breaker 2 pole
RAMSEY CONTROLS BK93 5HP AC MODULE
NATIONAL SONICS XH4145-01 SENSALL CONTROL BOARD XH4145-01
NEW GE FANUC IC610MDL157A OUTPUT RELAY MODULE 24V
NEW BOX SEALED FIRE ALARM SIMPLEX 976013 TFX AUX RELAY KIT
SIMPLEX 565-773 FIRE ALARM IDNET REPEATER BOARD 565773 ON METAL MOUNT
SECURITY DOOR CONTROLS SDC CW-2 5099 250 2 AMP FUSE RATING BOARD
CPC COMPUTER PROCESS CONTROLS 237-2900 537-2900 RS485 PROCESSOR CIRCUIT BOARD
NEW CRIME STOPPER CS9605PI ALARM CONTROL
NEW SIMPLEX 4100-1248 100W CLASS B ADAPTER SUB ASSEMBLY BOARD 566-489
DAY Control Products P/N 2010 w/13570 Card
DAY Control Products P/N 2010 w/UPT-5000-IV Board
48PT2-90 Infared Scanner 4' 90 deg head water resistant
JEOL SCAN RATE PB SP000299-00 SP000308/0 6 SWITCH CIRCUIT BOARD CARD
JEOL SCAN RATE PB SP000300-01 SP000308-01 6 SWITCH CIRCUIT BOARD CARD
JEOL YU SP000372(00) MS255034-1 PENNING PB POWER UNIT CIRCUIT BOARD CARD
Bently Nevada 3300/12-01-20-00 Power Supply Unit Board Mondule
NEW SIMPLEX 4100-1248 100W CLASS B ADAPTER SUB ASSEMBLY BOARD 566-489 NO BOX
NEW SILENT KNIGHT 5128 FIRE COMMUNICATIOR 4 CHANNEL
NEW JOHNSON CONTROLS LN-VSTAT-1 COMMUNICATION ROOM SENSOR
GE 8000 SIZE 2 MOTOR STARTER 30 AMP 600V FUSIBLE MCC MCCB BUCKET
CROUSE HINDS DMVM100/MT M9 EXPLOSION PROOF LIGHT LAMP 100W 120/208/240/277V
APPLETON MLBG70LMT EXPLOSION PROOF LIGHT LAMP 70W 120/208/240/277V
APPLETON MLBG10HMT EXPLOSION PROOF LIGHT LAMP 100W 120/208/240/277V
ITE SENTRON CLE 3 POLE 80 AMP 600V CLE63B080 CIRCUIT BREAKER
CUTLER HAMMER CHH 2 pole 175 amp 240v CHH2175 Circuit Breaker
GE TEY TEYH TEYH3015B 3 POLE 15 AMP 480V CIRCUIT BREAKER TEYH3015B FLAWED
New Siemens HED HED43B040 3 pole 40 Amp 480v Circuit Breaker
Cutler Hammer A10FN0 Size 4 Contactor 575v Volt 135 Amp 100HP 120v Coil
New Ashcroft T420T05-030XBXFS T420T05030XBXFS 15 Amp 125/250V Ac Temperature Cnt
NEW CONTEC P0-32L(PC)V Digital Output Board with Opto-Isolation
Rotork AQ Control Board S28047-01
American FPE NE 3 pole 40 amp 240v NE237040 Circuit Breaker Federal Pacific
RAYTEK ET3LTSF 04064B TEMPERATURE SENSOR 4-20mA 12-16V 0-200 DEG
ROSS CONTROLS 3/4" DUAL PO CHECK VALVE.#2778C5902 24VDC
MOORE INDUSTRIES DDA/4-20MA/DH1L1/24DC-AD-EU300 [DIN] DDA DC CURRENT ALARM
NEW CUTLER HAMMER "POWEREED" RELAY, D4ORB SER. A-2, 120V COIL 50-400Hz
GE 8000 SIZE 2 MOTOR STARTER 30 AMP CIRCUIT BREAKER MCC MCCB BUCKET CR3
NEW TAKENAKA DETECTOR, HD301-X2, SENSOR
Fisher Porter Vortex 4 50VMI-120AAH0ABB2 115V Signal Converter Flow Meter
Cutler Hammer AN16KN0 Size 3 Motor Starter 90 Amp 600 Volt 50HP 120v Coil Flawed
Square D KA KA3615026m 3 pole 150 amp 600v Breaker grey label
NEW E-CONOLIGHT HID PARKING/ROADWAY LIGHT, 400 WATT HPS BULB, E-HS4M40QZ
Zinsco/Sylvania QFP24 QFP24-125 3 Pole 125 Amp 240v Circuit Breaker QFP
New Cutler Hammer DH364UGK Non-Fusible 200 amp 600v Safety Switch Enclosure
Andover Controls Corp 01-100-435 Rev. B Circuit Board Fire Alarm *Missing Prong*
New SMC Electro-Pneumatic Transducer IT690-010-X34
Moore Transmitter 50DP3212BBXB 3-15 psi
NEW GILBARCO MARCONI W02417-G3R 326525 ASSEMBLY BOARD
New Murray MD-TR 2 Pole 150 amp 240v Circuit Breaker NEW NO BOX
NEW SWAGELOK S-3200-9 ELBOW 90 DEG 2" FITTING UNION
GRAHAM TRANSMISSIONS CYCLETROL 150 MOTOR CONTROLLER 176B6000 120V 17 AMP
ALLEN BRADLEY 849-ZOD124 SERIES B PNEUMATIC TIMING RELAY 600V 120V COIL
NEW KSF2 400w watt Lithonia High Pressure Sodium Shoebox Lamp
9000 R I/O Rev D Identicard 400594 Circuit Board Fire Alarm
New Square D Power Pact HJL36060 Circuit Breaker Panel Disconnect 60 Amp 600v
shindengen power supply converter fy122r4gn
Simplex 562-797 2 Signal Expansion Circuit Board Fire Alarm
NEW HONEYWELL 30756396-501 REPLACEMENT MODULE
豫公安备 41010502000017号