Lenze 8615E - Manual (Page 25)

23
Installation
•
Connect the inverter, mains filter, and mains choke to the
grounded mounting plate. Zinc-coated mounting plates allow a
permanent contact. If the mounting plates are painted, the paint
must be removed in every case.
•
When using several mounting plates they must be connected
with as large surface as possible (e.g. using copper bands).
•
Connect the screen of the motor cable to the screen connection
of the inverter and to the mounting plate of a surface as large as
possible. We recommend to use ground clamps on bare metal
mounting surfaces to connect the screen to the mounting plate
with as large surface as possible.
screened cable
ground clamp braid
bare metal
mounting surfac
•
If contactors, motor protection switches or terminals are located
in the motor cable, the screens of the connected cables must
also be connected to the mounting plate with as large surface as
possible.
•
PE and the screen should be connected in the motor terminal
box. Metal cable glands at the motor terminal box ensure a
connection of the screen and the motor housing with as large a
surface as possible.
•
If the mains cable between mains filter and inverter is longer
than 0.3 m, the cable must be screened. Connect the screen of
the mains cable directly to the inverter module and to the mains
filter and connect it to the mounting plate with as large as
possible surface.
•
When using a brake resistor, the screen of the brake resistor
cable must be directly connected to the inverter and the brake
resistor and it must be connected to the mounting plate with a
surface as large as possible.
•
The control cables must be screened. Digital control cables
must be screened at both ends. Connect the screens of the
control cables to the screen connections of the controllers
leaving as little unscreened cable as possible.
•
When using the inverters in residential areas an additional
screening with a damping of
≥
10 dB is required to limit the
noise emission. This is usually achieved by installation into
enclosed, grounded conrol cabinets or boxes made of metal.
Please note:
•
If units, which do not comply with the noise immunity EN 50082-
2 required by the CE, are operated next to the inverters, an
electromagnetic interference of these units is possible.