1-3
1.3 Precautions for Using Inverters
1.3.1 Precautions in introducing inverters
This section provides precautions in introducing inverters, e.g. precautions for installation environment, power supply lines,
wiring, and connection to peripheral equipment. Be sure to observe those precautions.
Installation environment
Install the inverter in an environment that satisfies the requirements listed in Table 2.1 in Chapter 2.
Fuji Electric strongly recommends installing inverters in a panel for safety reasons, in particular, when installing the ones
whose enclosure rating is IP00.
When installing the inverter in a place out of the specified environmental requirements, it is necessary to derate the inverter
or consider the panel engineering design suitable for the special environment or the panel installation location. For details,
refer to the Fuji Electric technical information "Engineering Design of Panels" or consult your Fuji Electric representative.
The special environments listed below require using the specially designed panel or considering the panel installation
location.
Environments Possible problems Sample measures Applications
Highly concentrated
sulfidizing gas or
other corrosive gases
Corrosive gases cause parts
inside the inverter to corrode,
resulting in an inverter
malfunction.
Any of the following measures may
be necessary.
- Mount the inverter in a sealed
panel with IP6X or air-purge
mechanism.
- Place the panel in a room free
from influence of the gases.
Paper manufacturing,
sewage disposal, sludge
treatment, tire
manufacturing, gypsum
manufacturing, metal
processing, and a
particular process in
textile factories.
A lot of conductive
dust or foreign
material (e.g., metal
powders or shavings,
carbon fibers, or
carbon dust)
Entry of conductive dust into
the inverter causes a short
circuit.
Any of the following measures may
be necessary.
- Mount the inverter in a sealed
panel.
- Place the panel in a room free
from influence of the conductive
dust.
Wiredrawing machines,
metal processing,
extruding machines,
printing presses,
combustors, and industrial
waste treatment.
A lot of fibrous or
paper dust
Fibrous or paper dust
accumulated on the heat sink
lowers the cooing effect.
Entry of dust into the inverter
causes the electronic circuitry
to malfunction.
Any of the following measures may
be necessary.
- Mount the inverter in a sealed
panel that shuts out dust.
- Ensure a maintenance space for
periodical cleaning of the heat sink
in panel engineering design.
- Employ external cooling when
mounting the inverter in a panel
for easy maintenance and perform
periodical maintenance.
Textile manufacturing and
paper manufacturing.
High humidity or
dew condensation
In an environment where a
humidifier is used or where
the air conditioner is not
equipped with a
dehumidifier, high humidity
or dew condensation results,
which causes a
short-circuiting or
malfunction of electronic
circuitry inside the inverter.
- Put a heating module such as a
space heater in the panel.
Outdoor installation.
Film manufacturing line,
pumps and food
processing.
Vibration or shock
exceeding the
specified level
If a large vibration or shock
exceeding the specified level
is applied to the inverter, for
example, due to a carrier
running on seam joints of
rails or blasting at a
construction site, the inverter
structure gets damaged.
- Insert shock-absorbing materials
between the mounting base of the
inverter and the panel for safe
mounting.
Installation of an inverter
panel on a carrier or
self-propelled machine.
Ventilating fan at a
construction site or a press
machine.
Fumigation for
export packaging
Halogen compounds such as
methyl bromide used in
fumigation corrodes some
parts inside the inverter.
- When exporting an inverter built
in a panel or equipment, pack
them in a previously fumigated
wooden crate.
- When packing an inverter alone
for export, use a laminated veneer
lumber (LVL).
Exporting.
Storage environment
The storage environment in which the inverter is stored after purchase is different from the operation environment. For details,
refer to the FRENIC-MEGA User's Manual, Chapter 2.
To Next Page
Loading...
