Danfoss VLT Ea4, Operating Manual

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T25 and T50 Torx drives
Sheet metal punch and/or pliers for cable entry plate
Any additional tools for assembling the cabinet panels according to design plans and established practices
4.3 Operating Environment
N O T I C E
CONDENSATION
Moisture can condense on the electronic components and cause short circuits.
Avoid installation in areas subject to frost.
Install an optional space heater when the unit is colder than the ambient air.
Operating in standby mode reduces the risk of condensation as long as the power dissipation keeps the circuitry free of
moisture.
N O T I C E
EXTREME AMBIENT CONDITIONS
Hot or cold temperatures compromise unit performance and longevity.
Do not operate in environments where the ambient temperature exceeds 55 °C (131 °F).
The unit can operate at temperatures down to -10 °C (14 °F). However, proper operation at rated load is only guaranteed at
0 °C (32 °F) or higher. Also, temperature feedback is not shown when temperatures are below 0 °C (32 °F).
Provide extra air conditioning for the cabinet or installation site when the temperature exceeds ambient temperature limits.
4.3.1 Gases
Aggressive gases, such as hydrogen sulphide, chlorine, or ammonia can damage the electrical and mechanical components. The
unit uses conformal-coated circuit boards to reduce the effects of aggressive gases.
For conformal coating class specifications and ratings, see the
Ambient Conditions section.
4.3.2 Dust
When installing the unit in a dusty environment, keep the following free from dust buildup:
Electronic components.
Heat sink.
Fans.
Keep the heat sink and fans free from dust buildup. When dust accumulates on electronic components, it acts as a layer of insula-
tion. This layer reduces the cooling capacity of the components, and the components become warmer. The hotter environment
decreases the life of the electronic components. Dust can also accumulate on fan blades, causing an imbalance which prevents the
fan from properly cooling the unit. Dust buildup can also damage fan bearings and cause premature fan failure.
For more information, refer to the
Maintenance and Service section.
4.3.3 Potentially Explosive Atmospheres
W A R N I N G
EXPLOSIVE ATMOSPHERE
Installing the drive in a potentially explosive atmosphere can lead to death, personal injury, or property damage.
Install the unit in a cabinet outside of the potentially explosive area.
Use a motor with an appropriate ATEX protection class.
Install a PTC temperature sensor to monitor the motor temperature.
Install short motor cables.
Use sine-wave output filters when shielded motor cables are not used.
AQ434333248451en-000101 / 130R1286 | 17 Danfoss A/S © 2023.01
Mechanical Installation
VLT Ea4 Parallel Drive Modules
Operating Guide