3HAC3242-4
【工控小知识】
PLC控制系统主要抗干扰措施
(1)电源的合理处理，抑制电网引入的干扰对于电源引入的电网干扰可以安装一台带屏蔽层的变比为1：1的隔离变压器，以减少设备与地之间的干扰，还可以在电源输入端串接LC滤波电路。
(2)正确选择接地点，完善接地系统良好的接地是保证PLC可靠工作的重要条件，可以避免偶然发生的电压冲击危害。接地的目的通常有
两个，其一为了安全，其二是为了抑制干扰。完善的接地系统是PLC控制系统抗电磁干扰的重要措施之一。
PLC控制系统的地线包括系统地、屏蔽地、交流地和保护地等。接地系统混乱对PLC系统的干扰主要是各个接地点电位分布不均，不同接地点间存在地电位差，引起地环路电流，影响系统正常工作。例如电缆屏蔽层必须一点接地，如果电缆屏蔽层两端A，B都接地，就存在地电位差，有电流流过屏蔽层，当发生异常状态如雷击时，地线电流将更大。
此外，屏蔽层、接地线和大地有可能构成闭合环路，在变化磁场的作用下，屏蔽层内又会出现感应电流，通过屏蔽层与芯线之间的耦合，干扰信号回路。若系统地与其他接地处理混乱，所产生的地环流就可能在地线上产生不等电位分布，影响PLC内逻辑电路和模拟电路的正常工作。PLC工作的逻辑电压干扰容限较低，逻辑地电位的分布干扰容易影响PLC的逻辑运算和数据存储，造成数据混乱、程序跑飞或死机。模拟地电位的分布将导致测量精度下降，引起对信号测控的严重失真和误动作。
安全地或电源接地：将电源线接地端和柜体连线接地为安全接地。如电源漏电或柜体带电，可从安全接地导入地下，不会对人造成伤害。
系统接地：PLC控制器为了与所控的各个设备同电位而接地，叫系统接地。接地电阻值不得大于4Ω，一般需将PLC设备系统地和控制柜内开关电源负端接在一起，作为控制系统地。
信号与屏蔽接地：一般要求信号线必须要有惟一的参考地即“单点接地”，屏蔽电缆遇到有可能产生传导干扰的场合，也要在就地或者控制室**接地，防止形成“地环路”。
信号源接地时，屏蔽层应在信号侧接地；不接地时，应在PLC侧接地；信号线中间有接头时，屏蔽
层应牢固连接并进行绝缘处理，一定要避免多点接地；多个测点信号的屏蔽双绞线与多芯对绞总屏蔽电缆连接时，各屏蔽层应相互连接好，并经绝缘处理，选择适当的接地处单点接点。
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地址：福建省福州市自贸区江滨东大道68-1号蓝波湾2号楼17层-3HAC027086-008 Lower bracket, 6640
3HAC027097-001 OpMan Getting started (all)
3HAC027104-001 Process Cable Package 1-3 MH.
3HAC027113-003 Flange disconnect SC
3HAC027130-001 Sealing ring
3HAC027146-003 Press tool E
3HAC027163-001 Instruction label
3HAC027184-001 CP/CS/CBUS Cabl Upper arm
3HAC027184-002 CP/CS/CBUS Cabl Upper arm
3HAC027185-003 SMB unit with battery
3HAC027188-001 CPS, CPS/CBUS Upper arm
3HAC027191-001 Tool kit horizontal axis 6
3HAC027191-002 Tool kit vertical left axis 6
3HAC027191-003 Tool kit vertical right axis 6
3HAC027198-001 Cust.Cable Upper Arm《福州鸿飞达自动化---特惠供应中》
3HAC027213-001 CP/CS/CBUS Cable Upper arm
3HAC027213-002 CP/CS/CBUS Cable Upper arm
3HAC027228-001 CP/CBUS Cable Upper Arm
3HAC027232-001 Process Cable Package Ax1 SW
3HAC027233-001 Process Cable Package Ax1 SW
3HAC027243-001 Weld Cable, Ax1
3HAC027246-008 Holder panel connector
3HAC027251-001 Proc cable package 3-6 pneumatic SW
3HAC027251-002 Proc cable package 3-6 pneumatic SW
3HAC027251-003 Proc cable package 3-6 pneumatic SW
3HAC027252-002 Lifting instruction label
3HAC027255-001 Serial link RS 232-422
3HAC027268-001 Process Cable Package 2-6 SW
3HAC027269-001 Process Cable Package 2-6 SW
3HAC027275-003 Cover 4400 FP《福州鸿飞达自动化---特惠供应中》
3HAC027281-002 Cable unit axis 1-3 F.Prime
3HAC027282-002 Cable unit axis 4-6
3HAC027294-001 Water & Air unit, type II
3HAC027294-002 Water & Air unit, type II
3HAC027294-003 Water & Air unit, type II
3HAC027304-003 Gear box ax 1-3 F. Prime
3HAC027325-001 Axis 4 cover
3HAC027325-002 Hose clamp
3HAC027341-001 Process Cable Package ax 1-2 SW
3HAC027347-001 Process Cable Package ax 2-6 SW
3HAC027348-001 SP, ax 2-6《福州鸿飞达自动化---特惠供应中》
3HAC027349-001 Auxiliary Power, ax 2-6
3HAC027351-001 Can/Devicenet, ax 2-6
3HAC027354-004 Press bracket
3HAC027355-001 FB, ax 2-6
3HAC027356-001 Proc. Cable Package Lower/Upper SW
3HAC027361-001 Process Cable Package ax 1-2 MH
3HAC027364-001 Process Cable Package ax 2-6 MH
3HAC027380-001 Harness CAN/DeviceNet 7m
3HAC027380-002 Harness CAN/DeviceNet 15m
3HAC027380-005 Harness CAN/DeviceNet 22m
3HAC027380-006 Harness CAN/DeviceNet 30m
3HAC027381-001 Harness Aux Power 7m
3HAC027381-002 Harness Aux Power 15m
3HAC027381-005 Harness Aux Power 22m
3HAC027381-006 Harness Aux Power 30m
3HAC027389-001 Swivel complete
3HAC027433-001 Push button
3HAC027492-003 Mount. set lubr. syst. SC
3HAC027499-004 Cable protection
3HAC027499-005 Bracket《福州鸿飞达自动化---特惠供应中》
3HAC027523-001 Cable harness IRB1600ID
3HAC027547-001 Warning label
3HAC027569-001 Adapter
3HAC027571-001 Harn-RS232 RS
3HAC027574-001 Harn-Ethernet RS
3HAC027583-001 Harn-Power supply RS
3HAC027586-001 Adapter plate ELAN-flex. cab.
3HAC027588-005 Stop pin
3HAC027602-001 CHC, ax 2-6
3HAC027622-002 Mtrl Set Lower arm MH,axis 1-3
3HAC027635-001 Harn-Control cable 7m 340
3HAC027638-001 Lower arm, Foundry Prime
3HAC027641-001 Air filter《福州鸿飞达自动化---特惠供应中》
3HAC027644-001 Clip-on foot
3HAC027650-001 SMB connection D-sub
3HAC027652-001 DSQC 669 Eth/IP slave
3HAC027669-001 RS Holder
3HAC027696-001 Cover plate rear
3HAC027697-001 zmr filter, small
3HAC027703-001 Earth cable XS101/XS102
3HAC0277-1 Bracket service outlet
3HAC027716-001 Wrist , ID spare
3HAC0277-2 Bracket service outlet
3HAC027733-001 SW material set, 66X0
3HAC027767-001 Jumper connector XP102
3HAC027794-001 Lifting device
3HAC027798-001 Shelf , wire feeder
3HAC027813-001 Bracket ESAB wire feeder
3HAC027816-002 Connector-MiniFit 5p fem.
3HAC027819-001 Shaft《福州鸿飞达自动化---特惠供应中》
3HAC027865-002 Hose clamp lock
3HAC027869-001 SMB box complete
3HAC027872-003 Mount. set gland plate CM
3HAC027874-001 Cover armhousing, ID spare
3HAC027894-003 2 Station Interchange MIC 2.1
3HAC027928-001 Gasket
3HAC027949-001 Corner bracket
3HAC027999-006 Drive Unit RTT
3HAC028010-001 CAN/DeviceNet, Upper Arm
3HAC028010-004 CAN/DeviceNet Upper Arm
3HAC028014-001 CPS, Upper Arm
3HAC028014-004 CPS, Upper Arm
3HAC028017-003 Gear-motor unit ax 1-3 sp
3HAC028018-003 Gear-motor unit ax 4
3HAC028021-003 Movable plate《福州鸿飞达自动化---特惠供应中》
3HAC028051-001 Auxiliary Power, Upper Arm
3HAC028051-004 Auxiliary Power, Upper Arm
3HAC028059-002 Wrist Foundry plus
3HAC028064-001 Attachment plate
3HAC028074-001 Support bearing MTC 500, 750
3HAC028079-001 Current Collector
3HAC028080-001 Joint ball, stainless
3HAC028087-001 Bearing ring
3HAC028113-003 OP-Panel 1 OP-ready incl. stand
3HAC028121-004 RV 70E-118.5
3HAC028132-001 Universal joint《福州鸿飞达自动化---特惠供应中》
3HAC028145-001 Control cable Wash 7m
3HAC028170-001 CP/CBUS Upper arm
3HAC028179-001 DSQC668 axis computer
3HAC028196-001 UL signal lamp
3HAC028254-001 Cableset Int. 500 C-Index
3HAC028286-001 Proc. Cable 1-3 MH Prime
3HAC028300-001 RS SIM card
3HAC028301-001 OP-Panel 2.1 OP-ready
3HAC028302-001 Harn-XT16/Power unit
3HAC028320-001 Washer 2 holes
3HAC028327-001 Cableset Int. 250-5000 L
3HAC028336-001 Ethernet cable M12 con
3HAC028357-001 SxTPU3 Complete
3HAC028357-024 USB cable assy
3HAC028357-025 E-stop assy《福州鸿飞达自动化---特惠供应中》
3HAC028357-026 Joystick assy
3HAC028357-027 LCD & touchscreen assy
3HAC028357-028 Top cover & KB assy
3HAC028357-029 Thermoplastic Screw
3HAC028359-001 Harness SP stationary gun
3HAC028367-001 Connection plate FP
3HAC028368-001 Bracket conn. box FP
3HAC028369-001 base cover FP
3HAC028430-001 Customer contact plate, w. hole
3HAC028434-001 Jumper Conn. XP41.2,1xA/L
3HAC028439-001 SUPPORT AXIS MTC 250
3HAC028441-001 SUPPORT AXIS MTC 750
3HAC028442-001 SUPPORT AXIS MTC 2000
3HAC028454-001 Cable guide《福州鸿飞达自动化---特惠供应中》
3HAC028459-001 Magnetic roof antenna
3HAC028460-001 Omni-directional antenna
3HAC028461-001 RF Cable, Internal
3HAC028462-001 RF Cable, External 10m