SBC PCD2.M5 Series - Cabling; Cable Routing

Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Cabling
Overview
2-3
2
2.4 Cabling
2.4.1 Cablerouting
● 230Vsupplylinesandsignallinesmustbelaidinseparatecablesatleast10cm
apart. Even within the switching cabinet, it is advisable to leave space between
power and signal lines.
● Digitalsignal/buslinesandanaloguesignal/sensorlinesshouldbelaidin
separate cables
● Itisadvisabletouseshieldedcablesforanaloguesignallines.
● Theshieldshouldbeearthedattheentryorexittotheswitchingcabinet.The
shields should be as short as possible and of the largest possible cross-section.
The central earthing point should be > 10 mm² and connected to the PE ground
wire by the shortest route
● Theshieldisgenerallyconnectedtoonesideoftheswitchingcabinetonly,unless
 thereisapotentialequalizationwithsignicantlylowerresistancethantheshield
resistance
● Inductivitiesinstalledinthesameswitchingcabinet,e.g.contactorcoils,shouldbe
 providedwithsuitablesuppressors(RCelements)
● Switchingcabinetcomponentswithhigheldintensity,e.g.transformersor
frequency inverters, should be shielded with separator plates with a good ground
`connection.
Surge protection for long distances or external lines
● Wherelinesarelaidoutsidethebuilding,oroverlongerdistances,suitablesurge
 protectionmeasuresshouldbeapplied.Forbuslinesinparticular,these
measures are essential.
● Withlineslaidoutside,theshieldmusthaveadequatecurrent-carryingcapacity
and be earthed at both ends.
● The surge conductors should be installed at the input to the switching cabinet.