3 Installation
3.5 Electrical Installation
62 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
3.5.1.3 Covered power terminals
In the case of sizes FS2 and FS3, the DC+/+, DC-, and BR connections will
be covered with plastic covers at the factory. They can be uncovered if
necessary.
3.5.1.4 Motor connection cable
The screened cables between the variable frequency drive and the motor
should be as short as possible.
Connect the screening, on both sides and across a large area (360°
overlap), to the protective earth (PE). The power screen's ground
connection (PES) should be in the immediate proximity of the variable
frequency drive (screening shield, cable gland) and directly on the motor
terminal box.
Prevent the screening from becoming unbraided, e.g. by pushing the
opened plastic sheath over the end of the screening or with a rubber
grommet on the end of the screening.
Alternatively, in addition to the large-area gland plate, you can also twist
the screen braid at the end and connect it to the protective earth. In
order to prevent EMC interference, this twisted screen connection
should be as short as possible (recommended value for the twisted
cable screen: b
1/5 a).
NOTICE
Terminal L3 will be covered with a plastic cover on all variable
frequency drives that are powered with a single-phase power
supply (DC1-1D…, DC1-12…). Do not uncover this terminal!
Figure 35: Screened motor connection cable
15 mm
(0.59’’)
PES
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