YASKAWA FM 054 Manual

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Contents

YASKAWA FM 054 Manual Manual pdf 30 page image

2.9 Installation guidelinesThe installation guidelines contain information about the interference free deployment of aPLC system. There is the description of the ways, interference may occur in your PLC,how you can make sure the electromagnetic compatibility (EMC), and how you managethe isolation.Electromagnetic compatibility (EMC) means the ability of an electrical device, to functionerror free in an electromagnetic environment without being interfered respectively withoutinterfering the environment.The components of VIPA are developed for the deployment in industrial environmentsand meets high demands on the EMC. Nevertheless you should project an EMC planningbefore installing the components and take conceivable interference causes into account.Electromagnetic interferences may interfere your control via different ways:n Electromagnetic fields (RF coupling)n Magnetic fields with power frequencyn Bus systemn Power supplyn Protected earth conductorDepending on the spreading medium (lead bound or lead free) and the distance to theinterference cause, interferences to your control occur by means of different couplingmechanisms.There are:n galvanic couplingn capacitive couplingn inductive couplingn radiant couplingIn the most times it is enough to take care of some elementary rules to guarantee theEMC. Please regard the following basic rules when installing your PLC.n Take care of a correct area-wide grounding of the inactive metal parts when installingyour components.– Install a central connection between the ground and the protected earth conductorsystem.– Connect all inactive metal extensive and impedance-low.– Please try not to use aluminium parts. Aluminium is easily oxidizing and is there-fore less suitable for grounding.n When cabling, take care of the correct line routing.– Organize your cabling in line groups (high voltage, current supply, signal and datalines).– Always lay your high voltage lines and signal respectively data lines in separatechannels or bundles.– Route the signal and data lines as near as possible beside ground areas (e.g.suspension bars, metal rails, tin cabinet).GeneralWhat does EMC mean?Possible interferencecausesBasic rules for EMCVIPA System SLIOBasics and mountingInstallation guidelinesHB300 | FM | 054-1CB00 | en | 18-0630