HITEC PMAC 3000 - Cycle-On; Limit Outputs

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PMAC 3000 Page17
Cycle‐On
Cycle‐OnisadigitalinputthatisavailabletotheuserintheDigitalI/Oconnectorontherearof
thePMAC3000.SeeFigure1.
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Thecycle‐oninputiselectricallyisolatedfromthePMAC3000.Itcanbeactivatedbyapplying
5VDC to 24VDC nominal across the inputs, pin 1 to pin 2, on the digital I/O connector.The
maximuminputvoltageis30VDC.Theinputisreversepolarityprotected.SeeFigure14.
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Figure14–Cycle‐OnInputSchematic
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LimitOutputs
TherearefourlimitoutputsthatareavailabletotheuserintheDigitalI/Oconnectorontherear
ofthePMAC3000.SeeFigure1.
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TheHigh,PassandLowlimitsreflectthestatusoftheircorrespondingfrontpanelindicators.The
Targetoutputisa special case in thatitdoesnothaveacorrespondingdisplayindicator.The
Targetoutputalsodiffersinthatitisalwaysevaluatedinrealtime,regardlessoftheFunction
Modeselected.
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Allfourlimit outputsareactivelow,switchingtogroundwhenactive.SeeFigure15.Theyare
notisolatedfromthePMAC3000.Theoutputsaredesignedtooperatebyswitchingaloadona
5VDCto24VDCnominalsupply.Theabsolutemaximumvoltagelimitoneachoutputis26VDC.
Maximumswitchingcurrentis1.5A.
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Figures16‐19showafewtypicalconnectionstothelimitoutputs.
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