Johnson Controls VFD66 Drive User Manual page 15

4.3.3 Emissions Compliance
An internal factory installed EMC filter is provided with all ratings, it is recommended
that it is kept in place unless there is a specific reason for removing it. This internal filter
reduces radio-frequency emissions into the line power supply. When the motor cable is
short, it permits the requirements of EN61800-3:2004 to be met for the second
environment with restricted distribution. For longer motor cables, the filter continues to
provide a useful reduction in emission level. When used with any length shielded motor
cable (up to the limit for the drive), it is unlikely that nearby industrial equipment will be
disturbed.
Installation of an additional external EMC filter as shown in Table 4-1, provides higher
levels of emissions compliance. If the application requires these levels of compliance
then the external filter must be installed in order to ensure compliance with EMC
regulations such as the EC EMC Directive, and to ensure the validity of the CE mark.
Table 4-1 Emmisions compliance for VFD66 based on EMC filter configuration
Motor
Cable
Internal Filter Only
Length m
(ft)
3kHz 6kHz
1 (3) C4
5 (16) C4
10 (33) C4
15 (50) C4
25 (82) C4
50 (164) C4
*The typical leakage current of the low leakage filter is 3mA compared to the standard
filter which has a typical leakage current of 40mA.
Table 4-2 Key to conformity
Compliance Standard
Level
EN 61000-
6-4:2007
C2
EN 61800-
3:2004
IEC 61800-3
C3
EN 61800-
3:2004
IEC 61800-3
C4
Notes:
(1) The first environment is one where the low voltage supply network also supplies
residential premises
(2) When distribution is restricted, drives are available only to installer with EMC
competence.
VFD66 User Guide
Issue Number: 2
Filter and Switching Frequency
Schaffner P/N: FS6514-14-07
12kHz 3kHz
C4 C4 C2
C4 C4 C2
C4 C4 C2
C4 C4 C2
C4 C4 C2
C4 C4 C2
Description
Generic emission
standard for the
Industrial
Environment
Product standard
for adjustable
power drive
systems.
Product standard
for adjustable
power drive
systems.
www.johnsoncontrols.com
Standard Filter
6kHz 12kHz
C2 C3
C2 C3
C3 C3
C3 C3
C3 C3
C3 C3
Frequency Limits
Range
79dBμV quasi peak
0.15 – 0.50
MHz
66dBμV average
0.50 – 30 73dBμV quasi peak
MHz 60dBμV average
Requirements for the first environment (1) with restricted
distribution (2).
Requirements for the second environment with unrestricted
distribution.
Requirements for the second environment with restricted
distribution (2).
Low Leakage Filter
Schaffner P/N: FS6514-14-07-LL*
3kHz 6kHz
C2 C2
C2 C2
C3 C3
C3 C3
C3 C3
C3 C3
Application
AC Supply Lines
12kHz
C3
C3
C3
C3
C3
C3
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