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Diagnostics Optimization CT MODBUS RTU Technical Data
Installation and System Design Guide 25
Issue Number: 1
Table 2-11 Parts supplied with the drive (size 8 to 11)
2.10 EMC filters
There are three EMC filter options available:
Table 2-12 EMC filter options
2.10.1 Internal EMC filter
It is recommended that the internal EMC filter be kept in place unless there is a specific reason for removing it, for example the drive is part of a
Regen system or there is excessive ground leakage current in the system.
The internal EMC filter reduces radio-frequency emission into the line power supply. Where the motor cable is short, it permits the requirements of
EN 61800-3:2004 to be met for the second environment. For longer motor cables the filter continues to provide a useful reduction in emission levels,
and when used with any length of shielded motor cable up to the limit for the drive, it is unlikely that nearby industrial equipment will be disturbed. It is
recommended that the filter be used in all applications unless the instructions given above require it to be removed, or where the ground
leakage current is unacceptable.
Description Size 8 Size 9A / 9E Size 10E Size 11E
Control connectors (1 to 11 and
21 to 31)
x 1 x 1
Relay connector
x 1
24 V power supply connector
x 1
x 1
Grounding bracket
x 1
Surface mounting brackets
x 2
Surface mounting brackets
x 1
Filter option Requirements of EN 61800-3:2004 met
Internal EMC filter Second environment, with short motor cable
Standard external EMC filter First and second environment with motor cable length up to 100 m
Compact external EMC filter First and second environment with motor cable length up to 20 m
If the drive is used with ungrounded (IT) supplies, the internal EMC filter must be removed unless additional motor ground fault protection
is installed.
The power supply must be removed prior to removing the internal EMC filter.
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