Emc-Correct Electrical Installation - Danfoss FC 101 Quick Manual

Installation

3.2.5 EMC-Correct Electrical Installation

General points to be observed to ensure EMC-correct electrical installation.
•
Use only screened/armoured motor cables and screened/armoured control cables.
3 3
•
Ground the screen at both ends.
•
Avoid installation with twisted screen ends (pigtails), because this reduces the screening effect at high frequencies.
Use the cable clamps provided.
•
Ensure the same potential between drive and ground potential of PLC.
•
Use starwashers and galvanically conductive installation plates.
Mains-supply
L1
L2
L3
PE
Reinforced protective earth
Illustration 3.21 EMC-correct Electrical Installation
20
Quick Guide
PLC etc.
PLC
Min. 16 mm 2
Equalizing cable
Control cables
Min. 200mm
between control
cable, mains cable
and between mains
motor cable
Danfoss A/S © 08/2014 All rights reserved.
Panel
Status Quick Main
Menu
Menu Menu
Com.
OK
On
Warn.
Alarm
Hand O Auto
Reset On
On
Output con-
tactor etc.
Earthing rail
Cable insula-
tion stripped
All cable entries in
one side of panel
Motor cable
Motor, 3 phases and
Protective earth
MG18A602