Kitz RDH Series User Manual

25/31
DocumentNo.:KE-4051-00
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3.ProtectiveFunction
Thisproductincorporatesvarious protectivefunctions whichstoptheoperationandoutputerror signalsto
protecttheactuatorandthevalve.  Ifanyabnormalityisfound,removethecauseimmediatelyandperform
theresetoperationasfollows.
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(1)Resetoperation
PresstheOPEN,SHUTandAUTO/MANUALswitchessimultaneouslyforatleast5secondstorestorethe
operation tothe normal state. Reset operationcan be alsoperformed by cutting the powersupply to the
actuatorfor2secondsorlonger.
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(2)Protectionofmotoragainstburnoutduetotheconstraintofvalvecausedbyforeignobjects
Ifthevalvedoesnotreachthetargetpositionevenafter1.5timesthesettimeafterinputtingthecommand,
thepowersupplytothemotoriscutoffandtheerrorlampisturnedon. 
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(3)Protectionofmotoragainstovercurrent
Currentlimitingcircuitisincorporatedtoprotectthemotorfromburning.
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(4)Protectionagainstreverseconnectionofpowersupply
Protectivecircuitforreverseconnectionofpowersupplyisincorporated.
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(4)Protectionagainstlightningsurge
Surgeabsorberisincorporatedtoprotecttheproductfromamomentaryovervoltagesuchasswitchingsurge
inthepowerlineandinductionlightningsurge.

Kitz RDH Series Specifications

General

Brand	Kitz
Model	RDH Series
Category	Control Unit
Language	English