VLT
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MICRO
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Appendix C
CE Labeling
What is CE Labeling?
The purpose of CE labeling is to avoid technical obstacles to trade within EFTA and the
EU. The EU has introduced the CE label as a simple way of showing whether a product
complies with the relevant EU directives. The CE label says nothing about the
specifications or quality of the product. Adjustable frequency drives are regulated by
three EU directives:
The Machinery Directive (89/392/EEC)
All machines with critical moving parts are covered by the machinery directive, which
came into force on 1 January 1995. Since an adjustable frequency drive is largely
electrical, it does not fall under the machinery directive. However, if an adjustable
frequency drive is supplied for use in a machine, we provide information on safety
aspects relating to the VLT adjustable frequency drive. We do this by means of a
manufacturer's declaration.
The Low-voltage Directive (72/23/EEC)
Adjustable frequency drives must be CE labelled in accordance with the low-voltage
directive. The directive applies to all electrical equipment and appliances used in the
voltage range of 50-1000 VAC and 75-1500 VDC.
The EMC Directive (89/336/EEC)
EMC is short for electromagnetic compatibility. The presence of electromagnetic
compatibility means that the mutual interference between different components/
appliances is so small that the functioning of the appliances is not affected. The EMC
directive came into force on 1 January 1996. The directive distinguishes between
components, appliances, systems and installations.
What is Covered?
The EU "Guidelines on the application of Council Directive 89/336/EEC" outline three
typical situations of using an adjustable frequency drive. For each of these situations,
explanations are offered as to whether the situation in question is covered by the EMC
directive and must be CE labelled.
1. The adjustable frequency drive is sold directly to the end-consumer. The adjustable
frequency drive is for example sold to a DIY market. The end-consumer is a layman.
He installs the adjustable frequency drive himself for use with a hobby machine, a
kitchen appliance, etc. For such applications, the VLT adjustable frequency drive must
be CE labeled in accordance with the EMC directive.
2. The adjustable frequency drive is sold directly to an installation site. That could be, for
example, a production facility or a heating/ventilation plant designed and installed by
professionals of the trade. Neither the adjustable frequency drive nor the completed
installation has to be CE labelled under the EMC directive. However, the unit must
comply with the basic EMC requirements of the directive. The installer can ensure this
by using components, appliances and systems that are CE labeled under the EMC
directive.
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