Cooling; Aggressive Environments; Ambient Temperature; Acoustic Noise - Danfoss VLT DriveMotor FCP 106 Design Manual

System Integration

3.6.3 Cooling

Drives dissipate power in the form of heat. Adhere to the
following recommendations for effective cooling of the
units.
•
Maximum air temperature to enter the enclosure
must never exceed 40 °C (104 °F).
•
Day/night average temperature must not exceed
35 °C (95 °F).
•
Mount the unit to allow for unhindered cooling
airflow through the cooling fins. See
chapter 6.1.1 Clearances for correct mounting
clearances.
•
Provide minimum front and rear clearance
requirements for cooling airflow. See the VLT
DriveMotor FCP 106 Operating Guide for proper
installation requirements.

3.6.4 Aggressive Environments

A drive contains many mechanical and electronic
components. All are to some extent vulnerable to environ-
mental effects.
NOTICE
Do not install the drive 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 drive.
Liquids can be carried through the air and condense in the
drive 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 protection rating IP54.
Airborne particles such as dust may cause mechanical,
electrical, or thermal failure in the drive. A typical indicator
of excessive levels of airborne particles is dust particles
around the drive fan. In dusty environments, use
equipment with enclosure protection rating IP54 or a
cabinet for IP20/Type 1 equipment.
In environments with high temperatures and humidity,
corrosive gases, such as sulphur, nitrogen, and chlorine
compounds, cause chemical processes on the drive
components.
Such chemical reactions rapidly affect and damage the
electronic components. In such environments, mount the
MG03M302
Design Guide
equipment in a cabinet with fresh air ventilation, keeping
aggressive gases away from the drive.
Before installing the drive, check the ambient air for
liquids, particles, and gases. These checks are 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.

3.6.5 Ambient Temperature

®
For recommended ambient temperature during storage
and operation, refer to chapter 6.5 Ambient Conditions and
chapter 6.9 Derating According to Ambient Temperature and
Switching Frequency.

3.6.6 Acoustic Noise

Acoustic noise originates from the following sources:
•
•
•
Switching frequency
Table 3.9 FCP 106 Acoustic Noise Levels, Fan on,
Measured 1 m (3.3 ft) from the Unit

3.6.7 Vibration and Shock

The drive complies with requirements for wall- or floor-
mounted units mounted at production premises, and in
panels bolted to walls or floors.
The drive has been tested according to the procedures
defined in Table 3.10.
IEC 61800-5-1 Ed.2
IEC/EN 60068-2-6
IEC/EN 60068-2-64
IEC 60068-2-34,
60068-2-35, 60068-2-36
Table 3.10 Vibration and Shock Test Procedure Compliance
Danfoss A/S © 12/2018 All rights reserved.
External fan
DC intermediate circuit coils
RFI filter inductor
MH1 MH2
[kHz] [dB] [dB]
5 55 55.5
Vibration test, Cl. 5.2.6.4
Vibration (sinusoidal) - 1970
Vibration, broad-band random
Curve D (1–3) Long-term test 2.52 g
RMS
3 3
MH3
[dB]
52
35