Wiring according to EMC
Always observe these basic rules
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EDBEMV82EV EN 3.0
3.1.1 Installation in the control cabinet
The mounting plate
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Use mounting plates with an electrically conductive surface (zinc-coated or V2A).
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Varnished mounting plates are not suitable even if the varnish on the contact areas is
removed. The contact areas without varnish bear the risk of rust formation.
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If the installation is distributed among several mounting plates, the mounting plates must be
electrically connected with a surface as large as possible (e.g. with earthing strips).
Mounting of the components
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Connect the controller and RFI filter to the earthed mounting plate with a surface as large as
possible.
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DIN rail mounting is not suitable!
Correct cable installation
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Control cables and mains cables must be separated from the motor cable.
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Cross the motor cable at right angles with mains cables and control cables.
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Optimally the motor cable is installed without interruptions.
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Install terminals for the motor cables e.g. at the control cabinet entry with a minimum
distance from the other terminals of at least 100 mm.
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The cables must always be installed close to the mounting plate (reference potential), as
loose cables act like aerials.
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Install mains cables and control cables in separate cable ducts.
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Connect shielded cable sections with the reference potential.
3.1.2 Specification of the cables used
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The cables used must comply with the requirements of the application (e.g. UL, EN 60204-1).
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Only use shielded cables with a braid made of tinned or nickel-plated copper. Do not use
braids made of steel.
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The overlap rate of the braid must amount to at least 70 % with an overlap angle of 90°.
3.1.3 Shield connection
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Connect the shields with a large surface to the EMC shield sheet on the device side.
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Do not disconnect the shield after the contact area but continue it up to the terminals.
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