Trane VarioTrane TR1 2800 Series, Operating Instructions Manual

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As all other electronic equipment, a frequency converter contains a number of mechanical and electronic com-
ponents, which to a varying extent are vulnerable to environmental impact.
Liquids can be carried through the air and condense in the frequency converter. In addition, liquids may facilitate
galvanic corrosion of components and metal parts. Steam, oil and brine may cause corrosion of components
and metal parts. In these areas, it is recommended to fit units in cabinets. As a minimum, cabinets should be
enclosure IP 54.
Particles in the air, such as dust particles, m ay lead to mechanical, electrical and thermal faults on the frequency
converter. Typical indicators that there are too many particles in the air are dust particles around the frequency
converter fan. In very dusty areas, cabinet fitting of units is recommended. As a minimum, cabinets should be
enclosure IP 54.
Aggressive gases, such as sulphur, nitrogen and chlorine compounds, together with high humidity and tem-
perature, facilitate possible chemical processes on the c omponents of the frequency converter. These chemical
processes quickly impact and damage the electronics. In these areas, cabinet fitting with fresh-air circulation in
the cabinet is recommended, thereby ensuring that aggressive gases are kept away from the frequency con-
verter.
Before the frequency converter is installed, it must be checked whether there are liquids, particles or gases in
the air. This can be done by looking at existing installations in the same environment. Typical indicators of
harmful airborne liquids are water or oil on metal parts or corrosion of metal parts. Too many dust particles are
typically observed on top of installation cabinets and on existing electrical installations. Indicators that there are
aggressive gases in the air are copper rails and cable ends that are black on existing electrical installations.
The ambient temperature (TAMB,MAX) is the maxi-
mum temperature allowed. The average
(TAMB,AVG) measured over 24 hours, must be at
least 5
° C lower. If the frequency converter operates
at temperatures above 45 ° C, a derating of the rated
output current is necessary.
114 TR1 2800 Series VFD
Special Conditions
Aggressive Environments
NOTICE
Consequently, the frequency converter is not to be installed in environments, where liquids, particles or gases are in
the air that would impact and damage the electronics. Unless the necessary measures are taken to protect the fre-
quency converter, there is a risk of stoppages, which reduce the service life of the frequency converter.
Derating for Ambient Temperature
All about TR1 2800 Series VFD