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Danfoss specifies which our different products comply
with.
Danfoss provides other types of assistance that can help
you obtain the best EMC result.
1.5.4 Compliance with EMC Directive
2004/108/EC
As mentioned, the frequency converter is mostly used by
professionals of the trade as a complex component
forming part of a larger appliance, system, or installation. It
must be noted that the responsibility for the final EMC
properties of the appliance, system or installation rests
with the installer. As an aid to the installer, Danfoss has
prepared EMC installation guidelines for the Power Drive
system. The standards and test levels stated for Power
Drive systems are complied with, provided that the EMC-
correct instructions for installation are followed, see
.
1.6 Air Humidity
The frequency converter has been designed to meet the
IEC/EN 60068-2-3 standard, EN 50178 pkt. 9.4.2.2 at 50
°
C.
1.6.1 Aggressive Environments
A frequency converter contains a large number of
mechanical and electronic components. All are to some
extent vulnerable to environmental effects.
CAUTION
Frequency converters in environments with airborne
liquids, particles, or gases capable of affecting and
damaging the electronic components. Failure to take the
necessary protective measures increases the risk of
stoppages, thus reducing the life of the frequency
converter.
Degree of protection as per IEC 60529
Liquids can be carried through the air and condense in the
frequency converter and may cause corrosion of
components and metal parts. Steam, oil, and salt water
may cause corrosion of components and metal parts. In
such environments, use equipment with enclosure rating
IP54/55. As an extra protection, all printed circuit boards
are coated.
Airborne particles such as dust may cause mechanical,
electrical, or thermal failure in the frequency converter. A
typical indicator of excessive levels of airborne particles is
dust particles around the frequency converter fan. In very
dusty environments, use equipment with enclosure rating
IP54/55 or a cabinet for IP00/IP20/TYPE 1 equipment.
In environments with high temperatures and humidity,
corrosive gases such as sulphur, nitrogen, and chlorine
compounds will cause chemical processes on the
frequency converter components.
Chemical reactions will rapidly affect and damage the
electronic components. In such environments, mount the
equipment in a cabinet with fresh air ventilation, keeping
aggressive gases away from the frequency converter.
As an extra protection all printed circuit boards are coated
NOTE
Mounting frequency converters in aggressive environments
increases the risk of stoppages and considerably reduces
the life of the converter.
Before installing the frequency converter, check the
ambient air for liquids, particles, and gases. This is done by
observing existing installations in this environment. Typical
indicators of harmful airborne liquids are water or oil on
metal parts, or corrosion of metal parts.
Excessive dust particle levels are often found on instal-
lation cabinets and existing electrical installations. One
indicator of aggressive airborne gases is blackening of
copper rails and cable ends on existing installations.
1.6.2 Vibration and Shock
The frequency converter has been tested according to the
procedure based on the shown standards:
The frequency converter complies with requirements that
exist for units mounted on the walls and floors of
production premises, as well as in panels bolted to walls or
floors.
•
IEC/EN 60068-2-6: Vibration (sinusoidal) - 1970
•
IEC/EN 60068-2-64: Vibration, broad-band random
Introduction
VLT
®
AutomationDrive FC 360 Design Guide
MG06B202 - VLT
®
is a registered Danfoss trademark
11
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