鼎晟达自动化PCA 35-1007-01
日期：2021-5-8PLC以其显著的优点而广泛用于工业控制，其实际应用涉及的问题很多，本文只是就其现场安装和维护问题提出了一些注意事项，供从事PLC设计及应用人员参考。
1、PLC的安装
PLC适用于大多数工业现场，但它对使用场合、环境温度等还是有一定要求。控制PLC的工作环境，可以有效地提高它的工作效率和寿命。在安装PLC时，要避开下列场所：
（1）环境温度超过0 ~ 50℃的范围；
（2）相对湿度超过85%或者存在露水凝聚（由温度突变或其他因素所引起的）；
（3）太阳光直接照射；
（4）有腐蚀和易燃的气体，例如氯化氢、硫化氢等；
（5）有打量铁屑及灰尘；
（6）频繁或连续的振动，振动频率为10 ~ 55Hz、幅度为0.5mm（峰-峰）；
（7）超过10g（重力加速度）的冲击。
小型可编程控制器外壳的4个角上，均有安装孔。有两种安装方法，一是用螺钉固定，不同的单元有不同的安装尺寸；另一种是DIN（德国共和标准）轨道固定。DIN轨道配套使用的安装夹板，左右各一对。在轨道上，先装好左右夹板，装上PLC，然后拧紧螺钉。为了使控制系统工作可靠性，通常把可编程控制器安装在有保护外壳的控制柜中，以防止灰尘、油污、水溅。为了保证可编程控制器在工作状态下其温度保持在规定环境温度范围内，安装机器应有足够的通风空间，基本单元和扩展单元之间要有30mm以上间隔。如果周围环境超过55C，要安装电风扇，强迫通风。
为了避免其他外围设备的电干扰，可编程控制器应尽可能远离高压电源线和高压设备，可编程控制器与高压设备和电源线之间应留出至少200mm的距离。
当可编程控制器垂直安装时，要严防导线头、铁屑等从通风窗掉入可编程控制器内部，造成印刷电路板短路，使其不能正常工作甚至永久损坏。
2、电源接线
PLC供电电源为50Hz、220V±10%的交流电。
FX系列可编程控制器有直流24V输出接线端。该接线端可为输入传感（如光电开关或接近开关）提供直流24V电源。
如果电源发生故障，中断时间少于10ms，PLC工作不受影响。若电源中断超过10ms或电源下降超过允许值，则PLC停止工作，所有的输出点均同时断开。当电源恢复时，若RUN输入接通，则操作自动进行。
对于电源线来的干扰，PLC本身具有足够的抵制能力。如果电源干扰特别严重，可以安装一个变比为1:1的隔离变压器，以减少设备与地之间的干扰。
3、接地
良好的接地是保证PLC可*工作的重要条件，可以避免偶然发生的电压冲击危害。接地线与机器的接地端相接，基本单元接地。如果要用扩展单元，其接地点应与基本单元的接地点接在一起。为了抑制加在电源及输入端、输出端的干扰，应给可编程控制器接上专用地线，接地点应与动力设备（如电机）的接地点分开。若达不到这种要求，也必须做到与其他设备公共接地，禁止与其他设备串联接地。接地点应尽可能接近PLC。
4、直流24V接线端
使用无源触点的输入器件时，PLC内部24V电源通过输入器件向输入端提供每点7mA的电流。
PLC上的24V接线端子，还可以向外部传感器（如接近开关或光电开关）提供电流。24V端子作传感器电源时，COM端子是直流24V地端。如果采用扩展船员，则应将基本单元和扩展单元的24V端连接起来。另外，任何外部电源不能接到这个端子。
如果发生过载现象，电压将自动跌落，该点输入对可编程控制器不起作用。
每种型号的PLC的输入点数量是有规定的。对每一个尚未使用的输入点，它不耗电，因此在这种情况下，24V电源端子向外供电流的能力可以增加。
FX系列PLC的空位端子，在任何情况下都不能使用。
5、输入接线
PLC一般接受行程开关、限位开关等输入的开关量信号。输入接线端子是PLC与外部传感器负载转换信号的端口。输入接线，一般指外部传感器与输入端口的接线。
输入器件可以是任何无源的触点或集电极开路的NPN管。输入器件接通时，输入端接通，输入线路闭合，同时输入指示的发光二极管亮。
输入端的一次电路与二次电路之间，采用光电耦合隔离。二次电路带RC滤波器，以防止由于输入触点抖动或从输入线路串入的电噪声引起PLC误动作。
若在输入触点电路串联二极管，在串联二极管上的电压应小于4V。若使用带发光二极管的舌簧开关，串联二极管的数目不能超过两只。
另外，输入接线还应特别注意以下几点：
（1）输入接线一般不要超过30m。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）可编程控制器所能接受的脉冲信号的宽度，应大于扫描周期的时间。
6、输出接线
（1）可编程控制器有继电器输出、晶闸管输出、晶体管输出3种形式。
（2）输出端接线分为独立输出和公共输出。当PLC的输出继电器或晶闸管动作时，同一号码的两个输出端接通。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。 咨询热线：18150708278
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漳州鼎晟达自动化设备有限公司
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SIEMENS 2XV9450-1MB11 NSFP 2XV94501MB11
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SIEMENS 6AV3 617-1JC30-0AX1 --
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SIEMENS Dubai INCREMENTAL ENCODER 6FX2001-2CC50 521285-38 TTL 2500ppr 521 285-38
SIEMENS Dubai Incremental Encoder 6FX2001-2CC04 2048 ppr 5V TTL ID Nr.365 543-37
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ITE SIEMENS HHJXD63B350 NSFP HHJXD63B350
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SIEMENS 6SN1123-1AB00-0BA1 SIMODRIVE *NEW IN BOX*
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Siemens 6ES5955-3LC41 (6ES59553LC41)
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(NEW/other) Siemens 6AV6 643-0CB01-1AX1 6av6 643-0cb01-1ax1 Free "FedEx" ship!
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ITE SIEMENS HNF361SPN NSFP HNF361SPN
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Siemens 6ES5377-0AA32 One Year Warranty !
Siemens Permanent Magnet Motor_1 HU3106_1HU3106-0AD01_1HU3106-0AD01-0ZZ9 * USA*
SIEMENS ETHERNET MODULE 6GK7343-1EX11-0XE0 *NEW OUT OF BOX*
Siemens 6ES7317-2EK14-0AB0 SIMATIC S7-300 CPU317-2 PN/DP
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NEW SIEMENS SHLD69400 CURCUIT BREAKER 400 AMP SHLD6-A
SIEMENS SIMATIC PC BOX 620 670 MOTHERBOARD A5E00104787 MAINBOARD Fully Tested!
SIEMENS SINUMERIK PCU 50 PCU 70 MOTHERBOARD A5E00124368 MAINBOARD Fully Tested!
Siemens, 6SN1123-1AB00-0BA2, 6SN1-123, Simodrive Power Module NEW
SIEMENS SINUMERIK OP 032 6FC5203-0AB20-0AA1 NIB
SIEMENS MIDI MASTER 6SE3126-8CJ40 INVERTER MD1850/2 18.5kw
ABB Robotics Siemens Servo Motor 3HAC10557-1, REV- 2_Encoder TS2640N141E172
SIEMENS 3~BRUSHLESS SERVO MOTOR, 1FT6102-1AC71-3EH1
SIEMENS 6SE6440-2UD33-0EA1 MICROMASTER 440 380/480 V 62 AMP 40 HP. NEW OTHER
New Siemens 6ES7314-5AE10-0AB0 6ES7 314-5AE10-0AB0 SIMATIC S7-300 CPU 314, Read!
1FT5072-1AF71-1EH0 Motor Siemens
SIEMENS SYSTEME HELMHOLZ 700-443-0TP01 INAT S7-TCP/IP 200-8000-01
SIEMENS 1FK6063-6AF71-1TB0 USPP 1FK60636AF711TB0
**SEALED** Siemens 6ES5-441-7LA13/6ES54417LA13 Output **WARRANTY**
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SIEMENS SIMATIC S7 6ES7 416-2XK04-0AB0 6ES74162XK040AB0 6ES7416 CPU 416-2 1P E:2
462 000.7033.00, SIEMENS , PRINT , 462000703300
New in Box Siemens HMI 6AV6 642-0DA01-1AX1 6AV6642-0DA01-1AX1
SIEMENS 1FT6081-8AF71-4TB0 NSPP 1FT60818AF714TB0
Siemens 6FX11214BA03 Industrial Control System
Siemens 7SJ6005-4EA00-0DA0/BB Overcurrent Protection NEW NEU
Siemens Teleperm 6DS1717-8FL
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NOU 6AV6642-0DC01-1AX1 SIEMENS 6AV6 642-0DC01-1AX1 , 6 months warranty
SIEMENS 6SN1123-1AB00-0BA1 6SN118-0NH00-0AA2 SIMODRIVE
1 PC New Siemens 6ES7416-2XK02-0AB0 PLC 6ES7 416-2XK02-0AB0 In Box
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1pc SIEMENS 6ES5 923-3UC11 NEW
New in Box Siemens 6ES5 923-3UC11 Simatic S5-135U/155U 923C Coordinator CPU
Siemens 6ES5 375-0LD21 Memory Submodule 6ES5375OLD21 - New No Box
SIEMENS 6SE9-216-8CB40 USPP 6SE92168CB40
1P 6FC5372-0AA00-0AA2 NCU 720.2 WITH PLC317-2DP SINUMERIK 840D SL SIEMENS ID4884
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SIEMENS NXD62B120 USPP NXD62B120
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3TB58 14-0A , SIEMENS
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6SL3000-0BE28-0AA0, SIEMENS,6SL30000BE280AA0, 6SL3000-0BE28-0AA0
Siemens 6FX1120-2AB03 Servo Board
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ITE SIEMENS LD63B400L NSFP LD63B400L
Siemens 6FC5357-0BB22-0AE0 6FC5 357-0BB22-0AE0 SINUMERIK 840D/DE NCU 572.3
Siemens 6EW1861-2AC Power Supply
Siemens 6QG 1331-3AK01 or 6QG1331-3AK01 Umrichter "Repair fix price"
SIEMENS NCU 571.2 6FC5357-0BB11-0AG0 6FC5247-0AA00-0AA2 6FC5250-6BX10-2AH0
Siemens 6DD1611-0AF0 SIMADYN D MAILBOX MM3 L- & C-BUS, EAC PLC 405011 Simatic S5
Siemens 6ES5288-4UA11 NEW
1pc SIEMENS 6SE7021-3EB51-Z
SIEMENS 1FT6062-1AF71-3EH1 USPP 1FT60621AF713EH1
SIEMENS 6ES5-456-7LA11-Z USPP 6ES54567LA11Z
Siemens simatic S7 CPU 416-2 6ES7 416-2XK04-0AB0 // 6ES7416-2XK04-0AB0 / E1
SIEMENS MASTERDRIVE MC DC/AC 6SE7014-0TP50-Z *NEW NO BOX*
SIEMENS 6RA8-232-1TB0 USPP 6RA82321TB0
SIEMENS 3TF5622-0AG2 USPP 3TF56220AG2
SIEMENS 6ES7-317-2EK13-0AB0 USPP 6ES73172EK130AB0
Siemens, 6SN1118-0AA11-0AA0, Simodrive Axis Control
Siemens, 6SN11181NH010AA1, 6SN1-118-1NH01-0AA1, Simodrive Control Module NEW
SIEMENS D400/90-MREQ-GDG6V62-3A2 USPP D40090MREQGDG6V6
SIEMENS QUADLOG QLCDM024DCBAN A5E00247448/06 CDM MODULE NEW
Berger Lahr D650 RS Axis Drive Module Schneider Siemens NEW
Siemens 6RA70 Radial Cooling Fan - 6RY1701-0AA04
Siemens 1613 Comunication Processor 570 204 9304 00 NEW
SIEMENS LT-Model 160A 6SN1124-1AA00-0EA1 6SN1118-0DG21-0AA1 *Tested Warranty*
Siemens BAS Panel w/Controller & TX-IO's
Siemens 6FM1420-1CA00
Siemens, 6FX1-126-1AA03, PC Board Video Graphics Card 6FX11261AA03 548 261 9301
Siemens 6RA70 1Quad Power/Interface Board - 6RY1703-0DA01
SIEMENS 6AV6-643-0CB01-1AX1 OPERATOR INTERFACE
Siemens Sinumerik 810 M CRT MDI Display Unit, 6FC3551-1AC-Z, , WARRANTY
Siemens ISGS B550-0000-000-000 Protective Relay Trip Unit Solid State NEW
SIEMENS 1LA2183-4AA60-ZA11 SQUIRREL CAGE MOTOR 18.5 KW
Siemens 6FM1420-1CA02 Lifetime Warranty !!!
*NIB*New In Box* Siemens/Furnas 18JTM92WA Motor Control Starter
**WARRANTY** Siemens 6ES7-414-3XJ00/ 6ES74143XJ00 CPU **MAKE OFFER**
**SEALED** Siemens 6ES5-434-7LA12/6ES54347LA12 Input Ver 003 **WARRANTY**
Siemens 6FM1723-3AA10 (6FM17233AA10)
SIEMENS 6ES5-985-1AA11 USPP 6ES59851AA11
1 PC New Siemens 6ES7 414-2XG04-0AB0 6ES7414-2XG04-0AB0 PLC Module In Box
Siemens 6ES7414-4HR14-0AB0 6ES7 414-4HR14-0AB0 SIMATIC S7-400H CPU 414-4H, Read!
Siemens 6AR1343-0ED00-0AA0 SICOMP FBG CPCI-COM202 NEW NEU
Siemens C79451-A3247-B71 Stromversorgung
Siemens C79451-A3247-B71 SICOMP M26 Power Supply
Siemens C79451-A3247-B71 SICOMP M26 Power Supply
SIEMENS Simatic PG740,Programmierger?t,Win.2000Professional+CD Rom+S5/S7+Tasche
Siemens S7 6ES7 677-1FD00-0FB0 // 6ES7677-1DD00-0BA0 // 6ES7677-1FD00-0FB0
Siemens 6ES5926-3SA12 Zentralbaugruppe
SIEMENS SIMATIC S5 IP252mx G26004-A3118-A070 Version A1
SIEMENS Simatic Model PG740CD-ROM,Programmierger?t mit Windows 98, S7+Tra.Tasche
Siemens 6FX1123-1CA00 Karte, ungebraucht m. orig. Karton
Siemens 6AV3520-1EL00 Panel
Siemens Teleperm 6DS1715-8BA, 6DS 1715-8BA Baugruppe
SIEMENS 6ES5-456-4UB12 NSFP 6ES54564UB12
Siemens Simatic S5 6ES5946-3UA11 6ES5 946-3UA11 E:7 -un/OVP-
Siemens Teleperm M/ME 6DS1503-8AA 6DS1 503-8AA Open Loop Control Module
Siemens Teleperm M / ME 6DS1102-8AA 6DS1 102-8AA Zentralprozessor AS 220
Siemens * WF706 * 6FM1706-3AB00 * 6FM1 706-3AB00 * 6FM1706 3AB00
Siemens Teleperm XP 6DP1360-8BA 6DP1 360-8BA E-Stand: 03 -sealed-
Siemens Teleperm ME 6DS1501-8AB 6DS1 501-8AB Einzelsteuerbaugruppe
Siemens Teleperm M ME 6DS1102-8AB 6DS1 102-8AB
Siemens Teleperm M / ME 6DS1122-8AA 6DS1 122-8AA
Siemens 6ES5955-7NC11, 6ES5 955-7NC11, 6ES5 955 7NC11, 6ES59557NC11
Siemens Simatic S5 CPU 95F 6ES5095-8FA01 6ES5 095-8FA01 Stand E:03 tested
PXX 6FC5356-0BB12-0AE0 Siemens sinumerik 6FC5 356-0BB12-0AE0, 3 months warranty
Siemens Anpassbaugruppe 6SC9830-0BC06
Siemens Simatic S5 Zentralbaugruppe CPU 6ES5948-3UA11 6ES59483UA11 E-Stand: 3
Siemens Simatic S5 Zentralbaugruppe CPU 6ES5948-3UA11 6ES59483UA11 E-Stand: 4
Siemens Teleperm Prozessterminal DS 078 6DS3423-1AX00
Siemens Teleperm Prozesster. DS 078 6DS3423-2AX00 DC24V
Siemens Simatic S7 6DD1607-0AA1 6DD1 607-0AA1 458-1 Applikationsbaugruppe E:02
NOU 6NH7808-3AA00 Siemens 6NH7 808-3AA00, 6 months warranty
NOU 6DS1223-8AA SIEMENS TELEPERM 6DS1 223-8AA, warranty 6 months
SIEMENS 6DS1-101-8AB USPP 6DS11018AB
Siemens 6SN1123-1AA00-0EA1, , 6SN11231AA000EA1, Fast Shipping
SIEMENS 6SN1-118-0DJ21-0AA1 NSFP 6SN11180DJ210AA1
New Siemens CPU 6ES7315-2EH14-0AB0 6ES7 315-2EH14-0AB0
Siemens A1-106-100-822/A1-106-100-522 PC Board Microprocessor Kit ! NEW !
SIEMENS 6SE3212-8BA40 USPP 6SE32128BA40
Siemens 6SE7090-0XX84-0AG1 (6SE70900XX840AG1) OBO!!
SIEMENS A1-106-150-502A USPP A1106150502A
Siemens Simatic 6ES5 943-7UB21
Siemens simadyn 6DD1688-0AE2 getestet
6DS1310-8AB , SIEMENS Teleperm 6DS13108AB TELEPERM
SPS CPU Siemens Simatic S5-100U 6ES5 100-8MA02 und Baugruppen
Siemens 6FM1725-3BA00 WF 725 B ungebraucht!
Siemens C79451-A3247-B71 Stromversorgung
Siemens C79458-L2317-A1 Sicomp + C79458-L2320-A1
Siemens C79458-L2317-A1 + C79458-L2320-A1 Sicomp
Siemens C79451-A3247-B71 SICOMP M26 Power Supply
Siemens 6RA2280-8DS31 Stromrichterger?t
Siemens 6FC5203-0AF02-0AA0 OP 012 , 12,1" TFT (800x600) 6FC5 203-0AF02-0AA0
Siemens 6RA2625-6DV55-7BH0 Kompaktger?t
Siemens 462 000.7033.00 Widerstandaufbau für Spannungsbegrenzer G20
Siemens 6RA2232-6DV62-0 Compact Converter
SIEMENS 6SL3225-0BE31-5AA0 Sinamics 6SL3 225-0BE31-5AA0 Sinamics Power Modul 250
Siemens 6DS4425-8AA Fernbusanschlusseinheit
Siemens CPU75/64MB PCM 6AR1001-3DD30-0AA0 6AR 1001-3DD30-0AA0
Siemens 6FC5210-0DA20-0AA1 MMC 102 ungebraucht!!!
Siemens Sinumerik Bedienfeld 8MC (R5/E2)
Siemens 6SC6520-0AA02 Simodrive 650 FBG Transistoransteuerung E Stand L ungebr
Siemens Teleperm M 6DS1144-8AA E2 + C79458-L436-B540
Siemens Power Supply 6DM1 001-1LA02-1, OVP
Siemens Simatic 6ES7414-3XJ04-0AB0 Zentralbaugruppe 6ES7 414-3XJ04-0AB0 E-Stand2
SIEMENS A1103001025 FNFP A1103001025
siemens G34901-A1015 trumpf prozess 132273
Siemens Simatic Anschaltbaugruppe 6DS1341-1AD
Siemens Teleperm M/ME 6DS1601-8AB 6DS1 601-8AB binaer input
Siemens Teleperm M/ME 6DS1731-8RR 6DS1 731-8RR analog input
Siemens Simatic S7 Touch Panel TP177B 6AV6642-0BA01-1AX1 6AV6 642-0BA01-1AX1
Siemens Teleperm M ME 6DS1812-8AC 6DS1 812-8AC Memory Module
OPR 6ES7633-2BF02-0AE3 Siemens simatic S7 6ES7 633-2BF02-0AE3, 6 m. warranty
Siemens Teleperm M/ME 6DS1333-8AA 6DS1 333-8AA Anschaltbaugruppe
Siemens Teleperm M / ME 6DS1102-8AB 6DS1 102-8AB Zentralprozessor
Siemens 6ES5926-5AA12 * 6ES5 926-5AA12 * 6ES5 926 5AA12 * 6ES59265AA12
Siemens Simatic S7 SM326 6ES7 336-1HE00-0AB0 6ES7336-1HE00-0AB0 E:08 failsafe
Siemens Sinumerik 805 Zentralger?t 6FC4100-1AA00-Z Streckensteuerung Steuerung
Siemens Simatic S7 6ES7178-4BH00-0AE0 6ES7 178-4BH00-0AE0 IM 178 Drive Interface
Siemens SICOMP 9AB4141-1FB04 9AB4-141-1FB04 Neuwertig
Siemens Simatic S5 S5-155U CPU 947R 6ES5947-3UR11 6ES5 947-3UR11 Stand 4
Siemens Teleperm ME 6DS1500-8AA 6DS1 500-8AA Einzelsteuerungsbaugruppe