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Considerations During Insta...
Liquids can be carried through the air and condense in the
frequency converter and can cause corrosion of
components and metal parts. Steam, oil, and salt water can
cause corrosion of components and metal parts. In such
environments, use equipment with enclosure rating IP
54/55. As an extra protection, coated printed circuit boards
can be ordered as an option.
Airborne particles such as dust can 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 dusty
environments, use equipment with enclosure rating IP54/
IP55.
In environments with high temperatures and humidity,
corrosive gases such as sulphur, nitrogen, and chlorine
compounds cause chemical reactions on the frequency
converter components.
Such chemical reactions rapidly affect and damage the
electronic components. In such environments, mount the
equipment in a cabinet with fresh air ventilation, keeping
8
8
aggressive gases away from the frequency converter.
Optional coated PCBs also offer protection in such
environments.
NOTICE
Mounting frequency converters in aggressive
environments increases the risk of stoppages and consid-
erably reduces the life of the frequency converter.
Before installing the frequency converter, check the
ambient air for liquids, particles, and gases by observing
existing installations in the 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.
8.2 Minimum System Requirements
8.2.1 Cabinet
The kit consists of either 2 or 4 drive modules, depending
on the power rating. The cabinets have to meet the
following minimum requirements:
84
®
VLT
Parallel Drive Modules
Width [mm (in)]
Depth [mm (in)]
Height [mm (in)]
Weight capacity
[kg (lb)]
Ventilation openings
Table 8.1 Cabinet Requirements
1) Required if Danfoss busbar or cooling kits are used.
8.2.2 Busbars
If the Danfoss busbar kit is not used, see Table 8.2 for the
cross-section measurements that are required when
creating customized busbars. For terminal dimensions, refer
to chapter 6.1.2 Terminal Dimensions and chapter 6.1.3 DC
Bus Dimensions.
Description
AC motor
AC mains
DC bus
Table 8.2 Cross-section Measurements for Customized Busbars
NOTICE
Align busbars vertically to provide maximum airflow.
8.2.3 Thermal Considerations
For heat dissipation values, refer to chapter 6.5 Power-
dependent Specifications. The following heat sources must
be considered when determining cooling requirements:
•
•
•
•
For required cooling air, refer to chapter 8.2.4 Cooling and
Airflow Requirements.
Danfoss A/S © 6/2016 All rights reserved.
2-drive: 800 (31.5), 4-drive: 1600 (63)
600 (23.6)
1)
2000 (78.7)
2-drive: 450 (992), 4-drive: 910 (2006)
See chapter 8.2.4 Cooling and Airflow
Requirements.
Width [mm (in)]
143.6 (5.7)
143.6 (5.7)
76.2 (3.0)
Ambient temperature outside enclosure.
Filters (for example, sine-wave and RF).
Fuses.
Control components.
Thickness [mm (in)]
6.4 (0.25)
6.4 (0.25)
12.7 (0.50)
MG37N102
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