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2 Safety and Conformity
2.1 Safety Precautions
Adjustable frequency drives contain high-voltage
components and have the potential for fatal injury if
handled improperly. Only trained technicians should install
and operate the equipment. No repair work should be
attempted without first removing power from the
adjustable frequency drive and waiting the designated
amount of time for stored electrical energy to dissipate.
Strict adherence to safety precautions and notices is
mandatory for safe operation of the adjustable frequency
drive.
2.2 Caution
WARNING
DISCHARGE TIME
Adjustable frequency drives contain DC link capacitors
that can remain charged even when the adjustable
frequency drive is not powered. To avoid electrical
hazards, disconnect the following:
•
AC line power
•
Permanent magnet type motors
•
Remote DC link power supplies, including
battery backups, UPS and DC link connections
to other adjustable frequency drives
Wait for the capacitors to fully discharge before
performing any service or repair work. The amount of
wait time is listed in the
Capacitor Discharge Time
table.
Failure to wait the specified time after power has been
removed before starting service or repair could result in
death or serious injury.
Voltage
[V]
Power [kW]
Minimum Waiting
Time [Min]
380–500
90–250
20
315–800 kW
40
525–690
55–315 (frame size D)
20
355–1200
30
Table 2.1 Capacitor Discharge Times
2.2.1 Disposal Instructions
Do not dispose of equipment containing
electrical components together with
domestic waste.
Collect it separately in accordance with
local and currently valid legislation.
Table 2.2 Disposal Instructions
2.3 CE Labeling
2.3.1 CE Conformity and Labeling
Machinery Directive (2006/42/EC)
Adjustable frequency drives do not fall under the
machinery directive. However, if an adjustable frequency
drive is supplied for use in a machine, Danfoss provides
information on safety aspects relating to the adjustable
frequency drive.
What is CE Conformity and Labeling?
The purpose of CE labeling is to avoid technical trade
obstacles within the 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 specifi-
cations or quality of the product. Adjustable frequency
drives are regulated by two EU directives:
Low Voltage Directive (2006/95/EC)
Adjustable frequency drives must be CE-labeled in
accordance with the Low-voltage Directive of January 1,
1997. The directive applies to all electrical equipment and
appliances used in the 50–1000 V AC and the 75–1500 V
DC voltage ranges. Danfoss CE labels in accordance with
the directive and issues a declaration of conformity upon
request.
EMC Directive (2004/108/EC)
EMC is short for electromagnetic compatibility. The
presence of electromagnetic compatibility means that the
mutual interference between different components/
appliances does not affect the way the appliances work.
The EMC directive came into effect January 1, 1996.
Danfoss CE labels in accordance with the directive and
issues a declaration of conformity upon request. To carry
out EMC-compatible installation, see
In addition, we specify which standards our products
comply with. Danfossoffer the filters presented in the
specifications and provide other types of assistance to
ensure the optimum EMC result.
Safety and Conformity
Design Guide
MG34S222
Danfoss A/S © Rev. 2014-02-10 All rights reserved.
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