Danfoss VLT DriveMotor FCM 106 Design Manual page 21

Product Overview
To ensure EMC-compliant electrical installation, observe
these general points:
•
Use only screened motor cables and screened
control cables.
•
Connect the screen to earth at both ends.
•
Avoid installation with twisted screen ends
(pigtails), since this ruins the screen effect at high
2.5.2 Emission Requirements
According to the EMC product standard for adjustable speed frequency converters EN/IEC 61800-3:2004 the EMC
requirements depend on the intended use of the frequency converter. The EMC product standard defines 4 categories,
defined - together with the requirements for mains supply voltage conducted emissions - in Table 2.5.
Category Definition according to EN/IEC 61800-3:2004
C1 Frequency converters installed in the first environment (home and office) with
a supply voltage less than 1000 V.
C2 Frequency converters installed in the first environment (home and office) with
a supply voltage less than 1000 V, which are neither plug-in nor movable and
are intended to be installed and commissioned by a professional.
C3 Frequency converters installed in the second environment (industrial) with a
supply voltage lower than 1000 V.
C4 Frequency converters installed in the second environment with a supply
voltage equal to or above 1000 V or rated current equal to or above 400 A or
intended for use in complex systems.
Table 2.5 Emission Requirements - EN/IEC 61800-3:2004
When the generic emission standards are used, the frequency converter must comply with the following limits
Environment
First environment
(home and office)
Second environment
(industrial environment)
Table 2.6 Emission Requirements - EN/IEC 61000-6-3 and EN/IEC 61000-6-4
®
VLT DriveMotor FCP 106 and FCM 106 Design Guide
Generic standard
EN/IEC 61000-6-3 Emission standard for residential,
commercial and light industrial environments.
EN/IEC 61000-6-4 Emission standard for industrial
environments.
MG03M102 - 08/2015
frequencies. Use the cable clamps provided
instead.
•
Ensure the same potential between frequency
converter and ground potential of PLC.
•
Use star washers and galvanically conductive
installation plates.
Conducted emission requirement
according to the limits given in EN
An EMC plan should be made.
Conducted emission requirement
according to the limits given in EN
55011
Class B
Class A Group 1
Class A Group 2
No limit line.
55011
Class B
Class A Group 1
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