Adtech ADT-DK300A - Page 152

BZ001M056A ADT‐DK300A/400A Engraving Machine
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(1) CNC must be kept away from the equipment with interference (e.g. inverter, AC contactor,
electrostaticgenerator,highvoltagegenerator,andsub‐unitofpowerlines),andtheswitchingpowersupply
shouldbeconnectedtoafiltertoimprovetheanti‐interferenceofCNC(asinFig.1‐4);
(2)To supply
powertothe system throughisolationtransformer, the machine tool mustbegrounded,
CNCanddrivemustbeconnectedtoseparateearthwire.
Tosuppressinterference
ConnectRCcircuit(0.01μF, 100~200Ω,asinFig.1‐5)tobothsidesofACcoilinparallel.RCcircuitshould
be
installedclosetoinductiveload;connectfreewheelingdiodereverselyonbothsidesofDCcoilinparallel
(asinFig.1‐6);connectsurgeabsorbertothewindingofACmotorinparallel(asinFig.1‐7).

ToreducetheinterferencebetweenCNCsignalcablesandstrongcurrentcables,thewiringshallfollow
theprinciplesbelow:
Gro
up
Cabletype Wiringrequirements
A
ACpowercord
BundlethecablesofgroupAseparatelyfromgroupBandC,keepat
least10cmclearance,ormakeelectromagneticshieldingforgroupA
ACcoil