Owner manual

ULTRA-CUT 100 XT
Manual0-5272 APPENDIX A-65
253-258 Inverter Over Temperature.
Eachinvertersection(IS)containsoneormoretemperaturesensors.Ifanyofthesedetectanovertemperature
conditionitactivatesthesignal“OVERTEMP_FLTgoingtotheCCMovertheinvertersectionsribboncable.
Inverterssemiconductors(transistorsanddiodes)areliquidcooled.Anythingthatincreasesthecoolanttem-
peraturetoohighcancauseoverheatingoftheinverters.Theinvertersmagnetics(transformer&inductors)
are air cooled by the same fan(s) that cool(s) the liquid.
Possible causes:
• Coolingfan(s)notoperating.
• Disruptedairow.
• Defectiveinvertermodule.
• InverterRibboncablebadconnection.
• DefectiveCCM.
Originally100and200Aunitshad2smallerfanswhile300&400Ausedasinglelargerfanalongwithalarger
radiator. More recently, the single larger fan may be used in the 100 & 200A as well.
Troubleshooting:
1. Conrmthatairisexhaustingfromboththetop(topfan)andbottom(bottomfanofunitswith2fans)ofthe
openingintherightsidepanel.Asthefan(s)arebehindtheradiatorit’shardtoseethemtoconrmthey
areturningbutperhapsyoucanuseaninspectionmirror.Refertosectionforcode403fortroubleshooting
defectivefans.
!
WARNING!
Fan blades can be moving and accidental contact with a mirror or other inspection devise can cause personal injury
or damage to the machine.
2. Leavingthesidepanelsandcoveroff,especiallytheleftlowersideorthetopcoverwillreducetheairow.
Alsoiftheradiatornsbecomecloggedwithdustitwillreduceairow.Cleantheradiatorperiodicallyby
blowingairintoittocleardirtfromthens.
259-264 Inverter Over Temperature due to high Ambient.
TheCCMmeasurestheambienttemperaturewherethecoolingairentersthelouversontheleftsideofthe
frontpanel.Ifaninvertergoesovertemperatureandwehavedeterminedthattheambientexceeds40degC
wewillgetoneormoreofthehighambientcodes,252-264.Thesensor,TS2,isaNTC(NegativeTemperature
Coefcient)resistorwhoseresistancevarieswithtemperature.Itismountedontheinsideofthefrontpanel
nexttothelouversontheleft.Toaccessitrequiresremovingoneormoreoftheinvertermodules.Iftheambi-
entishighbutnoinverteristoohotthereisnofault.
Possible causes:
• Ambientistoohigh.
• Coolingfan(s)notoperating.
• Disruptedairow.
• TS2,Ambienttemperaturesensor,shorted(veryunlikely)orotherwisedefective.
• DefectiveRelayboard.
• DefectiveCCM.
• DefectiveRelayboard.