5.2.8 Proper EMC Installation
A correct installation with EMC considerations in mind appears in Figure 5.5. Although most installations do not follow all
the recommended practices, the closer an installation resembles this example the better immunity the network will have
against EMI. Should EMI problems arise in an installation, refer to the example below. Attempt to replicate this installation
recommendation as closely as possible to alleviate such problems.
1
2
3
4
5
6
7
8
PE
U
V
W
9
L1
L2
L3
PE
130BB607.10
10
Figure 5.5 Proper EMC Installation
1
PLC 6 Min. 200 mm (7.9 in.) between control cables, motor and line power
2 Adjustable frequency drive 7 Motor, 3-phase and PE
3 Output contactor (generally not
recommended)
8 Line power, 3-phase and reinforced PE
4 Ground rail (PE) 9 Control wiring
5 Cable insulation (stripped) 10
Equalizing min. 16 mm
2
(0.025 in
2
)
Table 5.1 Legend to Figure 5.5
Adjustable Frequency Drive ...
Service Manual
68 Danfoss A/S © Rev. 2014-02-10 All rights reserved. MG94A222
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