User guide
PNOZs4
OperatingManualPNOZs4
21396EN13
13
Power,In1,In2,Out,Reset,Fault
Diagnostics:Theoperatingmodeselectorswitch"mode"isinitsstartposition
(verticalposition)
}
Remedy:Switchoffthesupplyvoltageandsettherequiredoperatingmode
onoperatingmodeselectorswitch"mode".
Faultsmalfunctions
}
Contactmalfunctions:Ifthecontactshavewelded,reactivationwillnotbepossibleafter
theinputcircuithasopened.
Servicelifegraph
Theservicelifegraphsindicatethenumberofcyclesfromwhichfailuresduetowearmust
beexpected.Thewearismainlycausedbytheelectricalload;themechanicalloadisnegli
gible.
U
B
24VDC
Example
}
Inductiveload:0,2A
}
Utilisationcategory:AC15
}
Contactservicelife:2,000,000cycles
Providedtheapplicationrequiresfewerthan2,000,000cycles,thePFHvalue(seetech
nicaldetails)canbeusedinthecalculation.
Toincreasetheservicelife,sufficientsparksuppressionmustbeprovidedonalloutput
contacts.Withcapacitiveloads,anypowersurgesthatoccurmustbenoted.Withcontact
ors,usefreewheeldiodesforsparksuppression.