IFM Electronic Efector 100 User manual

Installation Instructions
Inductive sensor
DC / unipolar
701223 / 02 02 / 2014
UK

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Function and features
This sensor detects metals without contact and indicates their presence by
providing a switched signal. Nominal sensing range (Sn) see type label; (value
based on standard measurement with mild steel; a shorter sensing range for other
metals).
Installation
• Flushornon-flushinstallation(seetypelabel:Sn=XmmforXmmnf)
(→fig.1)
• Openspacearoundthesensingfacewhenmountedinmetal(→fig.2).
• Minimumdistancewhenseveralsensorsofthesametypearemounted
(→fig.3,4).
Sn = x mm f Sn = x mm nf
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2
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UK
Sn = x mm f Sn = x mm nf
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Electrical connection
►Disconnectpowerbeforeconnecting
theproximityswitch;connection:
→fig.5).
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• Forcableslongerthan30mandwiresgreaterthan0.5mm²thecableshould
belaidseparatelyfromsourcesofinterference(atadistanceofabout50cm)
or a screened cable should be used.
• Connecttheloadbeforeapplyingtheoperatingvoltage.
• Observethevaluesforcurrentratingandminimumloadcurrent.
• Ifcapacitiveloadsareused,ensurethatthepeakcurrentratingisnot
exceeded.

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►Donotconnectloadsoflowresistance(e.g.lamps)directlytothesensor.
Switchtheseloadsviaarelay(→fig.6):
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►ForinductiveloadsaRCcircuit
should be connected in parallel to the
load(→fig.7).
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►Aloadwhichistoolowfor2-wire
sensors may lead to malfunction.
In such a case a resistor should be
connected in parallel to the load
(→fig.8).
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• Forseriesconnectionconsiderthevoltagedropofeachunit.

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UK
►Asaruleavoidconnecting2-wireunitsinparallel(onlyinexceptionalcases,
checkthesafefunction,→fig.9):
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►Thesupplyvoltagemustcorrespondtothevaluesindicatedonthelabel.Ifitis
notstabilised,acapacitorshouldbeconnected(at24Vand1Aforexamplea
capacitorof1000µF,50WV→fig.10):
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