Lenze E82xVxxxKxxxxx - Manual (Page 117)

Electrical installation
Basics for wiring according to EMC
Installation in the control cabinet
6
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117 EDS82EV903 EN 3.0
6.3.3 Installation in the control cabinet
Mounting plate requirements
ƒ Only use mounting plates with conductive surfaces (zinc−coated or V2A−steel).
ƒ Painted mounting plates are not suitable even if the paint is removed from the
contact surfaces.
ƒ If several mounting plates are used, ensure a large−surface connection between the
mounting plates (e.g. by using earthing strips).
Mounting of the components
ƒ Connect the controller and RFI filter to the grounded mounting plate with a surface
as large as possible.
ƒ No DIN rail mounting!
Optimum cable routing
ƒ Always separate motor cables from mains cables and control cables.
ƒ Install separate terminals for the motor cable(s) at the control cabinet inlet. Keep a
distance of at least 100 mm to all other terminals.
ƒ The cables must always be laid close to the mounting plate (reference potential), as
loose cables act like aerials.
ƒ Route the cables as straight−lined as possible to the terminals (no tangle of cables)!
ƒ Use a separate cable duct for mains cables and control cables. Do not mix different
cable types in one cable duct.
ƒ Never lay motor cables in parallel with mains cables and control cables.
ƒ Cross the motor cable vertically with mains cables and control cables.
ƒ Twist unshielded cables of the same circuit (both conductors) or keep the surface
between both conductors as small as possible.
ƒ Minimise coupling capacities and inductances by unnecessary cable lengths and
reserve loops.
ƒ Short−circuit cable ends of unused cables to the reference potential.
Earth connections
ƒ Connect all components (drive controllers, chokes, filters) to a central earthing point
(PE rail).
ƒ Set up a star−shape earthing system.
ƒ Comply with the corresponding minimum cable cross−sections.