28
Connectionofexternaldosingsystems
6.2.4Inputs
Thesignallevelcanbe5-24VDC/ACor100-240VAC.For5-24V,thesignalreferenceisconnected
to3andfor100-240Vto4.Potentialsontheinputscannotbemixed.
Note!
TheI/Oboardwillbedamagedifthevoltageonconnection3istoohigh>24V.
Connection8maybeconnectediftheprogramistopause,e.g.whiledetergentisbeingdosed.
Thegureshowsanexampleofengaginga24Vpausesignal.Theprogramwillpauseforaslong
asthepausesignalremainsactivated(high).
⑱
g.6266
Connection7.Ifthisisconnected,anerrormessagewillbedisplayedifanyofthechemicaltanks
areempty.Theprogramwillcontinue,however.
Thegureshowsanexampleofengaginganormalopencontact.
⑲