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  抑制接地系统引入的干扰 
     PLC系统分为逻辑电路接地和功率电路接地，有共地、浮地及机壳共地和电路浮地等三种方式。一般采用控制器与其它设备分别接地方式，接地时注意:接地线尽量粗，一般大于2mm2的线接地;接地点应尽量靠近控制器，接地点与控制器之间的距离不大于50m;接地线应尽量避开强电回路和主回路的电线，不能避开时，应垂直相交，应尽量缩短平行走线的长度。
实践证明，接地往往是抑制噪声和防止干扰的重要手段，良好的接地方式可在很大程度上抑制内部噪声的耦合，防止外部干扰的侵入，提高系统的抗*力。
SIEMENS SIMATIC CP 342-5,6GK7342-5DA01-0XE0

Applied Materials,  BOARD 0100-00003

NEC NRC-400II  193-240197, EXCHA 193-240196 

HD SF14-50, HARMONICDRIVE 

PANASONIC AC SERVO  MQMS042A65E

MITSUBISHI A2ACPU-P21-S1

NEWPORT SPS-D3P XY DRIVER Z820A 

TOKYO ELECTRON LTD T/B,MC-31304, 8545P08569B 2108-020122-112180-020434-13 

PULSTEC O-PAS 1000A

GSI LUMONICS SMART MOTOR SM2310SQ-VRE

MSE 100FX 800851, NETWORKS 220F000603-401 MSE ,220F000604-401

MITSUBISHI CC-LINK GPP  UNIT AJ65BT-G4-S3

PULSTEC MSG2-CONT BOARD 00DTC065,MSG2B-100D

RELIANCE 16 SLOT RACK 57C331,803456-8R J2-3008

MITSUBISHI MELSEC AJ71E71 

HUNTINGTON TURBO THROTTLE VALVE A00-1549

EUROTHERM 2704 CONTROLLER 2704/VH/222/XX/D4/PV/D4/XX/PV/XX/A2/XX/ENG 

OMRON CJ1M CPU12,CJ1W MAD42,CJ1W SCU21-V1,CJ1W CLK21-V1,CJ1WTC001,ID261,OD212

MKS 600 SERIES  651CD2S1N 

SIEMENS SIMOVERT 6SE7021-6ES87-2DA0 

OMRON PLC SET CS1G-CPU44H,PA204,CLK21,AD081-V1,TS102,OD219,ID217 

SIEMENS SIMATIC, 6ES5511-5AA14

SANYO DENKI BL SUPERPZ0A030A1B2P00 

VAT GATE VALVE 03009-MA24-1003/0276 A-656507

MITSUBISHI MELFA TEACHING BOX T/B-3 

ESI EISA BUS/MMB INTERFACE 2 CKA 75756A,A2084-66002 B-0105-RT

FANUC POWER UNIT A16B-1212-0100-01

FINE SODICK MARK  I/O-02E 

SIEMENS PLC 6ES7223-1PL22-0XA0(1) 6ES7221-1BF22-0XA0(3) 6ES7223-1BH21-0XA0

YASKAWA SERVOPACK SGDH-08AE-SY213 

FANUC BOARD A16B-2202-0420/07E 

PANASONIC AC  MDDDT3530L01,1.0KW

GE PANAMETRICS  35,MMS35-331-1-100 

TOKKYOKIKI CORPORATION  aAD-1612TM1

GIKEN GSS-15-N02,SERVO DRIVE  TA8089N2512E453

HD 14-50-177570

HD 14-50-205539

SIEMENS POWER SUPPLY200W-MULTI-OUTPUT-SCHALTNETZTEIL 4FD6303-0LA03-1A

PANASONIC AC  MSM042A1E,MSM042A33, VRKF-9C-400

MITSUBISHI MELSEC PLCQ61SP Q06HCPU QX40QY41P QJ71C24N-R2 

CHINO DB 500F,DIGITAL INDICATOR CONTROLLER DB550-FA0,DB500 21017-187025 

ANELVA CRYO NAVI P-011CC,SCHEMATIC:H21-02832 

SEW MOVITRAC EURODRIVE MC07B0040-5A3-4-S0/DFP21B/FSC11B,

DYNAX CORPORATION 6XAD-002 

PANASONIC SERVO MOTOR MSM042A1E, REDUCER VRKF-9C-400 

PANASONIC AC SERVO MOTOR MSMA022A1F,MSMA022A43, VRKF-9C-200

EUROTHERM 462/113/13/25/060/002/96/00 SIEMENS S7-200,CPU226,6ES7 216-2BD22-0XB0 231-7PB22-0XA0 232-0HB22-0XA0 

SIEMENS CPU226 216-2BD22-0XB0,223-1PH21-0XA0,231-7PB21-0XA0,231-7PB22-0XA0 

00B0200-HEAD 

TOSHIBA MC392,MC39297286-S

GSI LUMONICS GIDDINGS & LEWIS MOTOR NSM2302 401-30234-01 M.1015.6946 G001820

MITSUBISHI MELSEC AJ71E71 

M.J.T FLOW & PRESSURE  MR-5000

EUROTHERM PROCESS  CONNECT T320 

GIKEN GSS-15-N02,GSSCONTROLLER TA8089N2502E453,3.0KG

YASKAWA AC SERVO MOTOR SGMPS-02ACA21,APEX  AB060-S2-P1

NSD VM-2AG-32 SENSORMRE-32SP062, MRE-GSP062

ALLEN BRADLEY 1785-L20B D, 1785L20B PLC-5/20 

MKS 626B13TBD PRESSURE  1000TORR 

LAKE SHORE 211 TEMPERTURE 

SEW MOVITRAC EURODRIVE MC07B0040-5A3-4-S0/DFP21B/FSC11B,

DELTA TAU CEM104 

NOVELLUS 02-10371-00 

OMRON EA5R,E5AR-CC4WW-DRT 

SICK STEGMANN  ENCODER SRM50-FFA0-S02 

INTERFACE AZI-2130 

INDRAMAT AC SERVO TDM 3.2-030-300-W1 MOD13/1X121-035

KLA instruments NSC3710-660800-00 B2,FAB 073-660800-00 

BOARD PCB GP-IB[NO-ISO] 3281-000173-14

PCB BOARD GP-IB 3281-000249-11

VAT GATE VALVE 03009-NA24-1005/0181 A-558357

VAT GATE VALVE 03009-NA24-1005/0178 A-558364

SMC MSQB200R ,D-A93

INDRAMAT RECO PLC RECO-G.06/01-FW RM I-01, RMO-02

OMRON CS1W-ETN21 

OMRON PLC SET CS1G-CPU44-V1,PA204,CLK21,AD081-V1,TS102,OD219,ID217

AB,ALLEN-BRADLEY PLCSLC-500 5/40 1747-L542-A,1746-NI4,IV16,OV32,BAS-5,

AB,ALLEN-BRADLEY BULLETIN 1394 AC 15KW 1394-AM75

TOKYO SEIMITSU HA1118B COSEL LEA50F-24

COGNEX IN-SIGHT 4100,P/N 800-5770-1 

SIEMENS CPU226 216-2BD21-0XB0,223-1BH21-0XA0,223-1PH21-0XA0,231-7PB21-0XA0

YASKAWA SERVOPACK JUSP-WS10AA,JUSP-WSCB10AA,JUSP-WSCA 10AA,JUSP-WSCD 

YASKAWA AC SERVO MOTOR SGMAH-01AAAH761,HD GEARHEAD HPG-20A-33-J604A-SP 

BECKHOFF BK7520,KL1184 [18],KL2488 [6] KL9010

PANASONIC SERVO MOTOR MSM021A1E,KE1.5V20E R-0056 

MITSUBISHI BASE UNITBD627E257G53,E46669-711V

OMRON IPU-201 

OMRON IPU-202 

OMRON SPU-201 

TAMAGAWA ENCODER TS5667N322 

MITSUBISHI A1S61PN,A2USHCPU-S1,A1SD75P3-S3,A1SJ71AT21B,A1SJ61BT11,A1SJ71UC24-R4

MITSUBISHI PLC FX2N-32MR-DS, FX2N-2LC, FX2N-4DA, FX2N-4AD

TAMAGAWA ENCODER TS5667N322A29553 

SIEMENS 6ES5 262-8MA12 

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