ABB AI801-EA

4、正確選擇接地點(diǎn)，完善接地系統(tǒng)

接地的目的通常有兩個，其一為了，其二是為了抑制干擾。完善的接地系統(tǒng)是PLC控制系統(tǒng)抗電磁干擾的重要措施之一。

系統(tǒng)接地方式有：浮地方式、直接接地方式和電容接地三種方式。對PLC控制系統(tǒng)而言，它屬高速低電平控制裝置，應(yīng)采用直接接地方式。由于信號電纜分布電容和輸入裝置濾波等的影響，裝置之間的信號交換頻率一般都低于1MHz，所以PLC控制系統(tǒng)接地線采用一點(diǎn)接地和串聯(lián)一點(diǎn)接地方式。

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廈門仲鑫達(dá)自動化設(shè)備有限公司

聯(lián)系人：蘇妙玲（銷售經(jīng)理）

電話：0592-5856292

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集中布置的PLC系統(tǒng)適于并聯(lián)一點(diǎn)接地方式，各裝置的柜體中心接地點(diǎn)以單獨(dú)的接地線引向接地極。如果裝置間距較大，應(yīng)采用串聯(lián)一點(diǎn)接地方式。用一根大截面銅母線（或絕緣電纜）連接各裝置的柜體中心接地點(diǎn)，然后將接地母線直接連接接地極。接地線采用截面大于22 mm2的銅導(dǎo)線，總母線使用截面大于60mm2的銅排。接地極的接地電阻小于2Ω，接地埋在距建筑物10 ~ 15m遠(yuǎn)處(或與控制器間不大于50m)，而且PLC系統(tǒng)接地點(diǎn)與強(qiáng)電設(shè)備接地點(diǎn)相距10m以上。

信號源接地時，屏蔽層應(yīng)在信號側(cè)接地；不接地時，應(yīng)在PLC側(cè)接地；信號線中間有接頭時，屏蔽層應(yīng)牢固連接并進(jìn)行絕緣處理，要避免多點(diǎn)接地；多個測點(diǎn)信號的屏蔽雙絞線與多芯對絞總屏電纜連接時，各屏蔽層應(yīng)相互連接好，并經(jīng)絕緣處理。選擇適當(dāng)?shù)慕拥靥巻吸c(diǎn)接點(diǎn)。

SANKYO SC3000 ROBOT,SC3000-300 

SEIWA MICRO SPOT WELDER DC MSW-412r-0002

YASKAWA CACR-UP130AAB,PCB JASP-WRCA01B,O/N R10215-992-1

GENESIS VACUUM TECHNOLOGIES  2.1,323-0081 

EBARA CRYOCOMPRESSORUNIT 3.1,HA3.1

PFEIFFER TURBO PUMPTMH 071-010-005 P 3P + CONTROLLER TC600+ TVF 005 

FANUC HANDY FILE A13B-0159-B101 

NOR-CAL PENDULUM VALVE NC-95-PP,PRODUCTS0190-17435 

OMRON PA205 CJ1H -CPU65H,CJ1W IC101 ETN21 MCH71 NC433 AD041-V1 DA041 ID262 

OD2

BOSCH PEP-DS 3843 991 625 

JASCO AS-1559 

OSAKA VACUUM COMPOUND MORECULAR PUMP TG1100FCAB-60 

SCAPACS FIBER LASERHEAD 1064NM KM0001-002-AC, KM0029-001-AA, KM0005-018-BA

NEC FACTORY COMPUTERFC-9801A 

NEC PC-9801BX3 PERSONAL COMPUTER 32 BITCPU UNIT,PC-9801BX3/U2 

OMRON F350 VISION ,F350-C40 

NEC FACTORY COMPUTERFC-9801A 

NSK DD SERVO DRIVE,MOTOR ESA-Y5120AF4-21.1,YS5120FN001 

DITTEL-SYSTEM MODULEAE6000 ARTL NR. F62001 

NIHON MARUKO KEYTRAN-II-UL 

FANUC SERVO AMPLIFIER MODULE A06B-6114-H211D 

DITTEL-SYSTEM MODULEH6000 ARTL NR. F64001 

ESI 123460 & BEI KIMCO  LA28-13-003Z 

NEC FC-9801V 

BOC EDWARDS STD EXCHEXT250 DN100CF 

ABB 5761789-6H SNAT609 TAI, SNAT603CNT,5761861-2B 

LISA LASER BODY-VERT

TOSOH SC-8010 

SMC THERMO GALDEN  HRZ002-L-X001 AC200/-208V 3PHASE 

YASKAWA CACR-UP130AAB,PCB JASP-WRCA01,O/N RA7694-163A-18 

DENSO ROBOT  RC5-MBA

NEW MITSUBISHI RFZ-140B 

FLUKE PM6306 AUTOMATIC RCL  1KHZ

Leybold Inficon  H200M

BOC EDWARDS TURBOMOLECULAR PUMP EXT250DN100CF 

NEC FC-S34Y/SY2Z3Z [FC-S34Y/SY2Z3ZD] 

VOLTECH PM 3000 PM3000 

VARIAN TURBO-V 250 TV 250 PUMP  TURBO.V 250 9699523S021 

KYOSAN AUTO BOX EHK30-TW1 LOT NO. WB4822

NEW MITSUBISHI RFZ-560A 

RELIANCE ELECTRIC VCIB-22 VECTRIVE AC-SERVO 

FANUC A16B-3200-0330, A20B-3900-0074, A17B-3300-0201, A20B-3300-0084/03B 

NEC FACTORY COMPUTERFC-9801A 

SAMSUNG FARA SRC+ ROBOT  SRC-S21A06 

VARIAN TURBO-V 250 TV250PUMP 9699007 TMP, TV250 EX9699523S012 CONTROLLER 

+CABLE

VARIAN TURBO-V 250 TV 250 PUMP CONTROLLER TURBO.V 250 9699423S023 

VARIAN TURBO-V 250 TV 250 PUMP  TURBO.V 250 C.U. EX9699423 

TECHNOS 5000K PC 

NEC FACTORY COMPUTER FC-9821X 

MULTILIN SR750-CASE 750-P1-G1-S1-HI-A20-R-T-H 

NIKKI DENSO ULSTA-300 

GE MULTILIN SR 469-P1-HI-A20 TH SR469 

FUJITSU DENSO BH5-3544 

EBARA CRYOCOMPRESSOR 2.1,323-0014

SSD DRIVES DC INTEGRATOR 590+SERIES 590P/0165/500/0011/UK/ARM/0/0/0 

TOA DK TURN TABLE TTT-510 

CHRIST ELEKTRONIK PLC SET, SN42 CP40 PP40 E16S 8EA A163 7EA

NEC FC-9813 

EQUIPE TECHNOLOGIES  ATM204-1-S 

#0004 ADAPTRONIC KT2000 TEST 

TECHNOS 5000K PC 

LISA LASER BODY f:120mm

RELIANCE AUTOMAX 7010 PROCESSOR 57C435A,0-57435-1,J-3650-6

VARIAN PROCESS UTILITY BOX,ASSY 04-709086-01 REV AD,SCHEM 04-705991-03 

RELIANCE HR2000  Controller 3RA2015

NEC FACTORY COMPUTER FC-9821X 

FANUC BOARD A20B-0008-0960/04A & A20B-0009-0070/01A

OLYPUS SZ61 MICROSCOPE WITH CCD  IMC-147FT

NEW GE MULTILIN SR 469-P1-HI-A20-T-H SR469 

NC NOR-CAL INTELLISYS SOFT SHUT  TSS-IQA-250-ISO-63-K910 

ULVAC CRYOGENICS CRYO-T 8 SUPER TRAP,CRYOPUMP CRYO-T8S,RS10

INDUSTRIAL COMPUTERGE FAUC IPC 1062IR-24 IC752SPL106B

NEC FACTORY COMPUTER FC98-NX FC-D21A SY4Z5Z

YOKOGAWA DD ACTUATORS - MOTOR DM1050A00& DRIVER SD1050A02

BOSCH D-64711 ERBACH1070083278-117 IMGCPS21-3(CM) CPU MMX266 

OMRON PLC PS000 NM010 UV-250 C-820A M2010 CS010 IP000 

OMRON NT620C-ST142B

LISA LASER LENS 2.5-5mm 

NEC PERSONAL COMPUTER PC-9801BX4/U2 

FANUC AC SERVO MOTORA06B-0212-B100,PULSECODER A860-2000-T301 

BRANSON/ IPC 31172 HUNTWOOD AVE P/N 12390-01 PM732 

SHIMADZU TMP POWER   CONTROLLER EI-D4203M(T1) 

ORBOTECH 0382396B CPU 3.20GHz 

ETEL DSA2 DIGITAL SERVO  DSA2P1540A

GASONICS/ IPC 2730 JUNCTION AVE  P/N 12390-02 PM732 

GASONICS/ IPC 31172HUNTWOOD AVE MATCHING BOX P/N 16801-01 PM 732 

SANYO DENKI ABS  AMPLIFIER 65AA030TXR02 

DIRECT DRIVE MOTOR 62890-001 64196-007

AE ADVANCED ENERGY PDX-1250 3156024-111A

YUASA CORPORATION 60V15A UNIT,SWU 6015T2 D1

ILLUNIS XMV-11002M 11MEGAPIXEL 

SANYO DENKI SERVO MOTOR 64BM180UXS5B,09511280D OPTICAL  F681000DD41

ELECTROCRAFT BLDC MOTOR WITH HARMONIC DRIVE AND INERTIA 24VBRAKE

EUROTHERM D 6250 ANALOGUE  664-123-123

NEC FACTORY COMPUTER FC-9801B 

MULTILIN SR750-CASE750-P1-G1-S1-HI-A20-R-T-H 

NEW ABB REF630 LMIO11KHL160003R0001C

XYCOM 3515KPMT 

YASKAWA SERVO USAFED-20C32T 15A 1500 

ETEL DSA2 DIGITAL  DSA2P174ZA-033A

KLA FFA MUSTANG RANDOM  BOARD 710-611867-000/AD

EUROTHERM D 6250 POWER SUPPLY 661-02-00

EUROTHERM D 6250 ANALOGUE ACQUISITION 663100100 

EUROTHERM D 6250 RELAY OUTPUT 659-00

ABB DRIVES 61061134YPP110A REV H, YPK 112A, YPK 113A 

SUTRON KALLFASS BT20/002149 

A-B Allen-Bradley MPL 240V AC  MOTOR MPL-A560F-SJ74AA 

NEW MITSUBISHI E32P4-A BU148A336G51 

PI PHYSIK P-275.30 CONTROLLER,PIEZO CONTROL E112.1.HIGH AMPE-107,E-102,E-

111

TEL TOKYO ELECTRON LTD. E2B023-11/ECUM E2B024-11/ECUD E2B023/ECU 

KAWASAKI SANYO  MOTOR 27BM065BBX20,60490-1001RB2

YASKAWA ROBOT CONTROLLER BOARD JASRC-BCP01,DF9203858-B0

RELIANCE ELECTRIC BLDC MOTOR WITH HARMONIC DRIVE GEARHEAD AND

AMAT APPLIED MATERIALS 0100-A0019  BOARD 0110-A0014 REV:A 

Radisys corporationEPC-5 CPU 

MECS ROBOT CONTROLLER UTW1010HG 

ADVANCED ENERGY PE-1000 AC PLASMA  3157501-000D

XYCOM VMEBUS 70978-001 70655-099 BIOS V2.4 CPU 133MHz 

FANUC BOARD A16B-2203-0754/04A,A20B-3300-0393/02A,A20B-3300-0310/08F 

TEL TOKYO ELECTRON LTD. E2B023-11/ECUM E2B024-11/ECUD E2B023/ECU 

FANUC BOARD A20B-0008-0911.07A

TEL TOKYO ELECTRON TOHOKU TS-4000Z-16 REV 1A  MC-31062 MC-31063

WAFER TRANS M/C WAFER  AM0907-W/T-50T 

LINX 7300 MAIN CONTROL PCB 

ULVAC CRYOGENICS RS5REFRIGERATOR UNITRS5

GE MULTILIN SR 745-W2-P1-G1-HI-P-H SR745

PFEIFFER VACUUM TURBO MOLECULAR  DCU150 

ESI KLA INSTRUMENTSP8 SHIVA BRIDGE  NO. 740-806130-00 FOR 9250

WAFER TRANS M/C TESTED WORKING FREE 

HP PROLIANT DL380 GEN9,HSINS-2145 COMPUTER CPU E5-2650,2.30GHz 

ABB BOARD WE-EN-01-155 6642396B1

SANYO DENKI ABS SUPER  65AA008TXR01 

FANUC BOARD A20B-2100-0423 04D,A350-2100-T426/05 

MECS ROBOT CONTROLLER  UTW1010HG 

SHINKKO SS-SERVO TYPE SSD-2220 2.2KW

YASKAWA VISION CONTROLLER MYVIS JEVSA-YV250 

HTA HT 300 SERIES AUTOMATIC LIQUID AUTOSAMPLER TESTED 

DIRECT DRIVE MOTOR 65271-003 62196-003,OIH TAMAGAWA 35-2000C/T-L3-5V 

GE MULTILIN SR 745-W2-P1-G1-HI-P-H SR745

HD -65-160-180556