User guide
PNOZs4
OperatingManualPNOZs4
21396EN13
7
Functiondescription
}
In2+
Singlechanneloperation:noredundancyintheinputcircuit,earthfaultsinthestart
circuitandinputcircuitaredetected.
}
Dualchanneloperationwithoutdetectionofshortsacrosscontacts:redundantinputcir
cuit,detects
– earthfaultsinthestartandinputcircuit,
– shortcircuitsintheinputcircuitand,withamonitoredstart,inthestartcircuittoo.
}
In2-
Dualchanneloperationwithdetectionofshortsacrosscontacts:redundantinputcir
cuit,detects
– earthfaultsinthestartandinputcircuit,
– shortcircuitsintheinputcircuitand,withamonitoredstart,inthestartcircuittoo,
– shortsbetweencontactsintheinputcircuit.
}
Automaticstart:Unitisactiveoncetheinputcircuithasbeenclosed.
}
Manualstart:Unitisactiveoncetheinputcircuitisclosedandthenthestartcircuitis
closed.
}
Monitoredstartwithfallingedge:Unitisactiveonce
– theinputcircuitisclosedandthenthestartcircuitisclosedandopenedagain.
– thestartcircuitisclosedandthenopenedagainoncetheinputcircuitisclosed.
}
Monitoredstartwithrisingedge:Unitisactiveoncetheinputcircuitisclosedand
oncethestartcircuitisclosedafterthewaitingperiodhaselapsed(seetechnicalde
tails).
}
Startwithstartuptest:Theunitcheckswhethersafetygatesthatareclosedare
openedandthenclosedagainwhensupplyvoltageisapplied.
}
Increaseinthenumberofavailableinstantaneoussafetycontactsbyconnectingcon
tactexpandermodulesorexternalcontactors/relays;
Aconnectorcanbeusedtoconnect1PNOZsigmacontactexpandermodule.
Installation
Installbaseunitwithoutcontactexpansionmodule:
}
Ensurethattheplugterminatorisinsertedatthesideoftheunit.
ConnectbaseunitandPNOZsigmacontactexpansionmodule:
}
Removetheplugterminatoratthesideofthebaseunitandatthecontactexpansion
module.
}
Connectthebaseunitandthecontactexpansionmoduletothesuppliedconnectorbe
foremountingtheunitstotheDINrail.
Installationincontrolcabinet
}
Thesafetyrelayshouldbeinstalledinacontrolcabinetwithaprotectiontypeofatleast
IP54.
}
UsethenotchontherearoftheunittoattachittoaDINrail(35mm).
}
Wheninstalledvertically:Securetheunitbyusingafixingelement(e.g.retaining
bracketorendangle).