Chapter 6 Operation Check/Residual Risk
6-2-1
6.2 Residual Risk Checklist
Damage caused by
careless carrying.
Do not drop the product. Do not
carry the inverter in a manner
that applies force to the cover or
the keypad.
Reduction of component
life due to use in a location
exposed to direct sunlight
or at a temperature outside
of the specification range.
Ensure that the ambient
temperature is within the
standard specification range in
the whole year by means of
cooling and ventilation.
Short-circuit failure due to
use in a location with
humidity or condensation
outside of the specification
range.
Ensure that the ambient
temperature is within the
standard specification range in
the whole year by means of
cooling and ventilation.
Otherwise, install the product in a
location free from condensation.
The cooling fin that is
heated to exceed 150°C
ignites a flammable wall.
Install the inverter on an
inflammable metal wall.
Component failure due to
ingress of dust, corrosive
gas, or other substances.
Install the inverter inside a totally
enclosed panel.
Reduction of a component
life due to degradation of
cooling capability by
horizontal installation.
Install the inverter vertically.
When the fin of the inverter
is installed outside of
cabinet, the cooling fan
fails due to droplet, oil
mist, etc.
When the fin of the inverter is
installed outside of cabinet,
install it in a location free from
droplet, oil mist, etc.
The arc discharge due to
screws loosened by
vibration, and ignites the
internal components.
Check screws are appropriately
tightened on a regular basis.
The arc discharge due to
screws loosened by
vibration, and ignites the
flammable materials.
Check screws are appropriately
tightened on a regular basis. Do
not place flammable materials
around the installed inverter.
When the cover is
removed, electric shock is
caused in a high-voltage
section.
Do not remove the cover when
power is supplied.
After power is turned off, wait 10
minutes or more to perform
working.
When the operator
removes the cover, electric
shock is caused when a
tool ouches a high-voltage
section.
Do not remove the cover when
power is supplied.
After power is turned off, wait 10
minutes or more to perform
working.
Due to long wiring length,
the insulation of the motor
degraded by surge, which
eventually burns the
motor.
If the wiring length exceeds 20 m,
shorten the motor wiring length.
Or install the optional LCR filter
and output-side AC reactor.
By connecting a motor to
the different voltage class
inverter, insulation of the
motor degraded, which
eventually burns the
motor.
Match the voltage class of the
inverter and the motor.
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