ACS550-02/U2 User’s Manual 307
Technical data
Second environment (drives of category C3)
1. Frame size R7 drives: The internal EMC filter is connected and the EMC screen is
installed.
Frame size R8 drives comply with the demands of category C3.
2. The motor and control cables are selected as specified in this manual.
3. The drive is installed according to the instructions given in this manual.
4. The maximum motor cable length is 100 m (330 ft).
WARNING! A drive of category C3 is not intended to be used on a low-voltage public
network which supplies domestic premises. Radio frequency interference is
expected if the drive is used on such a network.
Note: It is not allowed to install a frame size R7 drive with the internal EMC filter
connected on IT (ungrounded) systems. The supply network becomes connected to
ground potential through the EMC filter capacitors, which may cause danger or
damage the drive.
Note: It is not allowed to install a frame size R7 drive with the internal EMC filter
connected to a corner grounded TN system as this would damage the drive.
Equipment warranty and liability
The manufacturer is not responsible for:
• Any costs resulting from a failure if the installation, commissioning, repair,
alteration, or ambient conditions of the drive do not fulfill the requirements
specified in the documentation delivered with the unit and other relevant
documentation.
• Units subjected to misuse, negligence or accident.
• Units comprised of materials provided or designs stipulated by the purchaser.
In no event shall the manufacturer, its suppliers or subcontractors be liable for
special, indirect, incidental or consequential damages, losses or penalties.
This is the sole and exclusive warranty given by the manufacturer with respect to the
equipment and is in lieu of and excludes all other warranties, express or implied,
arising by operation of law or otherwise, including, but not limited to, any implied
warranties of merchantability or fitness for a particular purpose.
If you have any questions concerning your ABB drive, please contact the local
distributor or ABB office. The technical data, information and specifications are valid
at the time of printing. The manufacturer reserves the right to make modifications
without prior notice.
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