Vibration And Shock; Control Principle; Fc 300 Controls - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide
The frequency converter should not be installed 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.
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 IP 55. As
an extra protection, coated printet circuit boads can be orded as an option.
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 IP 55 or a cabinet for IP 00/IP 20/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.
Such 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.
An extra protection in such areas is a coating of the printed circuit boards, which can be ordered as an option.
NB!:
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 installation cabinets and existing electrical installations. One
indicator of aggressive airborne gases is blackening of copper rails and cable ends on existing installations.

Vibration and Shock

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The frequency converter has been tested according
to a 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.

Control Principle

"
A frequency converter rectifies AC voltage from mains into DC voltage, after which this DC voltage
is converted into a AC current with a variable amplitude and frequency.
The motor is supplied with variable voltage / current and frequency, which enables infinitely variable speed
control of three-phased, standard AC motors and permanent magnet synchronous motors.

FC 300 Controls

"
The frequency converter is capable of controlling either the speed or the torque on the motor
shaft. Setting par. 1-00 determines the type of control.
Introduction to FC 300
MG.33.B4.02 - VLT is a registered Danfoss trademark
IEC/EN 60068-2-6: Vibration (sinusoidal) - 1970
IEC/EN 60068-2-64: Vibration, broad-band
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