Lenze E70AC Series, Hardware Manual

Page: 97 / 162

Electrical installation
Installation according to EMC (installation of a CE−typical drive system)
Installation in the control cabinet
6
l
97
EDS700ACBA EN 5.1
6.3.4 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
The trouble−free operation of power supply modules with an external brake resistor is only
ensured if an axis module is installed in the immediate vicinity. Preferably by end−to−end
mounting and use of the DC busbar system (X101/X102).
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
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The motor cable is optimally installed if
– it is separated from mains cables and control cables,
– it crosses mains cables and control cables at right angles.
ƒ
Always install cables close to the mounting plate (reference potential), as freely
suspended cables act like aerials.
ƒ
Lead the cables to the terminals in a straight line (avoid tangles of cables).
ƒ
Use separated cable channels for motor cables and control cables. Do not mix up
different cable types in one cable channel.
ƒ
Minimise coupling capacities and coupling inductances by avoiding unnecessary
cable lengths and reserve loops.
ƒ
Short−circuit unused cores to the reference potential.
ƒ
Install the positive and negative wires for DC 24 V close to each other over the entire
length to avoid loops.
Earth connections
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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.