Proper Emc Installation - Danfoss VLT FC 100 Service Manual

Adjustable Frequency Drive ...

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.
5 5
1
9
Figure 5.5 Proper EMC Installation
1 PLC
2 Adjustable frequency drive
3 Output contactor (generally not
recommended)
4 Ground rail (PE)
5 Cable insulation (stripped)
Table 5.1 Legend to Figure 5.5
68
2
10
L1
L2
L3
PE
8
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
Service Manual
7
6 Min. 200 mm (7.9 in.) between control cables, motor and line power
7 Motor, 3-phase and PE
8 Line power, 3-phase and reinforced PE
9 Control wiring
10
Equalizing min. 16 mm 2 (0.025 in
3
4
5
6
U
V
W
PE
2 )
MG94A222