
Mountingandwiring
3.4 Powersupply
ThispowersupplyunitisequippedwithanI/Ointerface,whichpermitsconnectionoftheBeckhoffBus
Terminals.Thepowerissuppliedviatheupperspringloadedterminalslabeled“24V”and“0V”.
ThesupplyvoltagesuppliestheCXsystemanttheterminalBusandBusTerminalwithavoltageof24VDC
(15%/+20%).Thedielectricstrengthofthepowersupplyunitis500V
rms
.SincetheTerminalBus(Kand
Ebus)onlytransfersdata,aseparatepowersupplyisrequiredfortheBusTerminals.Thisisprovidedby
meansofthepowercontacts,whicharenotconnectedtothepowersupply.
Requirementsforthe24Vpowersupply
Thepowersupplymustbecapabletosupply4Aat24VtoguaranteeproperfunctionofCPUCX9020
moduleandterminals.
CX9020 19Version1.1
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