CHAPTER 3 - INSTALLATIONANDCONNECTION
The CFW-09 inverter series was designed taking in consideration safetyand
EMC aspects. The CFW-09 units do not have an intrinsic function until
connected with other components(e.g. a motor). Therefore,the basic product
is not CE marked for compliance with the EMC Directive. The end user takes
personal responsibility for the EMC compliance of the whole installation.
However, when installed according to the recommendations described in the
product manual and including the recommended filters/EMC measures the
CFW-09 fulfill all requirements of the EMC Directive(89/336/EEC) as defined
bythe Product Standard EN61800-3“Adjustable speed electricalpower drives
systems”, specific for variable speed drives systems.
Compliance of the whole series of the CFW-09 is based on testing some
representative models. A Technical Construction File was checked and
approvedbya Competent Body.
The CFW-09 inverter series are intended for professional applications only.
Therefore, the harmoniccurrentemissionsdefinedbythestandards EN61000-
3-2 and EN 61000-3-2/A14 do not apply.
The 500-600 V models are intended to be connected to an industrial low
voltage power supply network, or public network which does not supply
buildings used for domestic purpose - second environment according to
The filters specified in items 3.3.2 and 3.3.3 do not applyto the 500-600 V
For installing the frequency inverters in accordance to the
EN61800-3 the following items are required:
Output cables (motor wiring) must be flexible armored or to be installed
inside a metallic conduit or in a tray with equivalent attenuation.
The control (inputs and outputs) and signal wiring must be shielded or
installed inside a metallic conduit or a tray with equivalent attenuation.
It is essential to follow the grounding recommendations presented in this
For first environment (low-voltage public network)
(radio-frequencyinterference filter) atinverter input.
For second environment (industrial areas) and unrestricted
: install an RFI filter at inverter input.
The use of a filter requires:
Thecable’s shieldingmust besolidlyconnectedtothe common backplane,
The inverter and the filter must be mounted in close proximity, electrically
connected, to one another, on the same metallic backplane. The wiring
between them should be kept as short as possible.
Two filters aresuggested:Epcosand Schaffner, detailed onthe following items
3.3.2 and 3.3.3. Figures 3.18 and3.19 presenta connection diagram for EMC
filters, Epcos and Schaffner respectively.
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