詳細介紹
140DAI54000
140DAI54000
(l)接地要求和方法:
上面介紹了六種接地:供電系統(tǒng)地、保護地、邏輯地、屏蔽地安全柵地、信號回路地。對這六種接地,各家有各家的要求,雖然大都強調(diào)一點接地,接地電阻必須小于1歐姆等,但具體內(nèi)容上差別很大,下面給出幾個例子介紹常遇到的接地要求和方法。
①供電系統(tǒng)地:在很多企業(yè),特別是電廠、冶煉廠等,其廠區(qū)內(nèi)有一個很大的地線網(wǎng),而通常供電系統(tǒng)的地是與地線網(wǎng)連在一起的。有的廠家強調(diào)計算機系統(tǒng)的所有接地必須和供電系統(tǒng)地以及其它(如避雷地)嚴格分開,而且之間至少應保持15m以上的距離。為了*防止供電系統(tǒng)地的影響,建議供電線線路用隔離變壓器隔開。這對那些電力負荷很重,而且負荷經(jīng)常啟停的單位是應注意的。從抑制干擾的角度來看,將電力系統(tǒng)地和計算機系統(tǒng)的所有地分開是很有好處的,因為一般電力系統(tǒng)的地線是不太干凈的。
Brand MITSUBISHI CONTROLLER MDS-B-SPH-37
Brand MITSUBISHI MDS-B-CVE-55
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Brand MITSUBISHI MELSEC (PART# AJ71QE71N-B5T)
Brand MITSUBISHI SERVO MOTOR HA-100NCB-S
Brand MITSUBISHI drive unit ( MDS-B-V14-10)
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MITSUBISHI Transformer MELDAS-520AMH (1PH, 800VA)
CHUO Electric Transformer BKO-NC6139 (1PH, 800VA)
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Brand MITSUBISHI Circuit Board ( RK121-V24-2010 )
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Metrawatt power supply unit GTZ 4108
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Brand MITSUBISHI control unit FCA50D
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Brand MITSUBISHI servo amplifier TRA30
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Brand MITSUBISHI drive unit MDS-B-SVJ2-07
Brand MITSUBISHI Circuit Board ( RK427-110)
Brand MITSUBISHI Circuit Board ( RK427-185 )
Brand MITSUBISHI Circuit Board ( RK422-75 )
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Brand MITSUBISHI ELECTRONIC SOFT STARTER MSS-60
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MITSUBISHI PC Board & SOFTWARE (A70BDE-J71QLR23)
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Brand MITSUBISHI Circuit Board ( RK121-V14-20 )
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MITSUBISHI OPERATION BOARD (Part # FCU6-DUC32)
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MITSUBISHI KEYBOARD SWITCH(Part # KS-4MB915ABKO-NC4157)
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Texas Instruments TMS320C6415EGLZ6E3 (47pcs, DSP)
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RIVERSTONE Circuit Board 24-port Card ( X15-GE-24DCSF-A
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MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# A61RP)
MITSUBISHI MELSEC RS-232-C (PART# A1SJ71QC24-R2)
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MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# AY80)
MITSUBISHI MELSEC NET/10 NETWORK UNIT (A1SJ72QBR15)
Rietschle VTE 3 Vacuum Pump WB 63/2-30 STP (Type: VTE 3
MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# AY11E)
MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# AX80)
MITSUBISHI MELSEC INPUT/OUTPUT (AJ65SBTCF1-32DT)
Brand MITSUBISHI Remote I/O unit FCUA-DX100
Brand MITSUBISHI MELSEC OUTPUT UNIT (AJ65FBTA2-16T)
MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# AX82)
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MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER(AX41-S1)
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MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# AY60)
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Brand MITSUBISHI MELSEC UNIT (A1S62RD4)
MITSUBISHI SWTICH (Part # TM55DZ-H) a pack of 6pcs
Yaskawa Minertia SERVO MOTOR UGRMEM-04MSU24
Brand MITSUBISHI inverter FR-A520-0.4K
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Philips PM 5539 TV Color Analyzer
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Brand MITSUBISHI BATTERY UNIT (Part # FCUA-BT-4)
MITSUBISHI MELSEC PROGRAMMABLE CONTROLLER (PART# AX20)
MITSUBISHI MELSEC IO LINK REMOTE UNIT (AJ55TB2-16R)
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Brand MITSUBISHI MELSEC OUTPUT UNIT(PART3# A1SY18A)
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Brand MITSUBISHI MELSEC UNIT (AJ65SBTCF1-32D)
Yaskawa Minertia SERVO MOTOR UGRMEM-01SSU22
MITSUBISHI MELSEC CABLE(PART# AC30B)
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GRE VHF-FM Marine Radio ephone MR2001
MITSUBISHI ELECTRIC OPTION (PART#MRS120W60-1.5K)
MITSUBISHI MELSEC CABLE(PART# AC30R4)
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