
3 Installation
3.4 Correct EMC installation
DB1 variable frequency drive
11/20 MN040031EN
Eaton.com
63
3.4.4 General installation diagram
Figure 33: Correct EMC installation
a
Mains connection: Supply voltage, central grounding connection for control panel and machine
b
Control connection: Connecting the digital and analog control lines and communicating through an
RS45 plug-in connection
c
Motor connection: EMC-compliant connection (PES) between the shielded motor cable and the
motor's terminal box, using metal screw fitting or with a cable clip in the terminal box.
d
Cable routing: Power cables (A) and control cables (B) routed separately and at a distance from each
other. If different potential levels need to cross, they should do so at a right angle as far as possible.
e
Cable routing: Do not route power cables and control cables parallel to each other in the same cable
duct. If they need to be routed in parallel, they should be in separate metal cable ducts (in order to
meet EMC requirements).
PWR
U V W
L1 L2 L3
(L)(N)
PES
PES
≧ 100 mm
(≧ 3.94“)
PES
U V W
PE
PES
U V W
PE
B
A
④
②
⑤
A
B
A
B
③
~
AC
PE
①