
Safety Instructions 3
DoS: A denial-of-service (DoS) attack disrupts services by overloading
systems or exploiting vulnerabilities, resulting in a denial-of-service
(DoS) state.
IPX5 refers to protection of the inverter functions against water jets from
any direction when about 12.5-liter water is injected from a nozzle with
an inside diameter of 6.3 mm from the distance of about 3 m for at least 3
minutes.
IP5X refers to protection of the inverter functions and maintenance of
safety when the inverter is put into a stirring device containing dust of 75
µm or smaller in diameter, stirred for 8 hours, and then removed from the
device.
Water here refers to fresh water at room temperature (5 to 35°C).
Indoor here refers to the environments that are not affected by climate
conditions.
Caution
Usage
The electronic thermal relay function does not guarantee
protection of the motor from overheating. It is
recommended to install both an external thermal and PTC
thermistor for overheat protection.
Do not repeatedly start or stop this product with a magnetic
contactor on its input side.
The effect of electromagnetic interference must be reduced
by using a noise filter or by other means. Otherwise nearby
electronic equipment may be affected.
Appropriate precautions must be taken to suppress
harmonics. Otherwise power supply harmonics from the
inverter may heat/damage the power factor correction
capacitor and generator.
To drive a 400 V class motor with this product, use an
insulation-enhanced motor, or take measures to suppress
surge voltage. Otherwise surge voltage, which is attributed
to the length and thickness of wire, may occur at the motor
terminals, causing the motor insulation to deteriorate.
When parameter clear or all parameter clear is performed,
the required parameters must be set again before starting
operations because all parameters return to their initial
values.
The inverter can be easily set for high-speed operation.
Before changing its setting, the performances of the motor
and machine must be fully examined.
This product's brake function cannot be used as a
mechanical brake. Use a separate device instead.
Perform an inspection and test operation of this product if it
has been stored for a long period of time.
Static electricity in your body must be discharged before
you touch the product.
Only one PM motor can be connected to an inverter.
A PM motor must be used under PM motor control. Do not
use a synchronous motor, induction motor, or synchronous
induction motor.
Do not connect a PM motor to this product with it set to the
induction motor control setting (initial setting). Do not
connect an induction motor to this product with it set to the
PM sensorless vector control setting. Doing so will cause
failure.
In the system with a PM motor, the inverter power must be
turned ON before closing the contacts of the contactor at
the output side.
In order to protect the inverter and the system against
unauthorized access by external systems via network, take
security measures including firewall settings.
Depending on the network environment, the inverter may
not operate as intended due to delays or disconnection in
communication. Carefully consider the conditions and
safety for the inverter on site.
To maintain the security (confidentiality, integrity, and
availability) of the inverter and the system against
unauthorized access, DoS attacks, computer viruses, and
other cyberattacks from external devices via network, take
appropriate measures such as firewalls, virtual private
networks (VPNs), and antivirus solutions. We shall have no
responsibility or liability for any problems involving inverter
trouble and system trouble by DoS attacks, unauthorized
access, computer viruses, and other cyberattacks.
When the emergency drive function is enabled, the
operation is continued or the retry operation (automatic
reset and restart) is repeated even if a fault occurs, which
may damage or burn the inverter, the converter unit, or the
motor. Before restarting the normal operation after the
operation using the emergency drive function, make sure
that the inverter, the converter unit, and the motor have no
fault.
Emergency stop
A safety backup such as an emergency brake must be
provided for devices or equipment in a system to prevent
hazardous situations from occurring in case of failure of
this product or an external device controlling this product.
If the breaker installed on the input side of this product
trips, check for wiring faults (short circuits etc.) and damage
to internal parts of this product. Identify and remove the
cause of the trip before resetting the tripped breaker and
applying the power to the product again.
When a protective function activates, take an appropriate
corrective action, then reset the inverter, and resume the
operation.
Maintenance, inspection and parts replacement
Do not carry out a megger (insulation resistance) test on the
control circuit of the inverter. It will cause a failure.
Disposal
The inverter must be treated as industrial waste.
Caution
Waterproof and dustproof performances
The inverter is rated with an IPX5 waterproof rating and an
IP5X dustproof rating when the operation panel (FR-DU08-
01), the front cover, the wiring cover, and the cable glands
are securely fixed with screws.
The items enclosed with the inverter such as the Instruction
Manual or CD are not rated with the IPX5 waterproof or IP5X
dustproof ratings.
Although the inverter is rated with the IPX5 waterproof and
IP5X dustproof ratings, it is not intended for use in water.
Also, the ratings do not guarantee protection of the inverter
from needless submersion in water or being washed under
strong running water such as a shower.
Do not pour or apply the following liquids over the inverter:
water containing soap, detergent, or bath additives; sea
water; swimming pool water; warm water; boiling water; etc.
The inverter is intended for indoor installation and not for
outdoor installation. Avoid places where the inverter is
subjected to direct sunlight, rain, sleet, snow, or freezing
temperatures.
If the operation panel (FR-DU08-01) is not installed, if the
screws of the operation panel are not tightened, or if the
operation panel is damaged or deformed, the IPX5
waterproof performance and the IP5X dustproof
performance are impaired. If any abnormalities are found on
the operation panel, ask for an inspection and repair.
If the screws of the front cover or the wiring cover are not
tightened, if any foreign matter (hair, sand grain, fiber, etc.)
is stuck between the inverter and the gasket, if the gasket is
damaged, or if the front cover or the wiring cover is
damaged or deformed, the IPX5 waterproof performance
and the IP5X dustproof performance are impaired. If any
abnormalities are found on the front cover, wiring cover, or
the gasket of the inverter, ask for an inspection and repair.
Cable glands are important components to maintain the
waterproof and dustproof performances. Be sure to use
cable glands of the recommended size and shape or
equivalent. The standard protective bushes cannot
sufficiently maintain the IPX5 waterproof performance and
the IP5X dustproof performance.
If a cable gland is damaged or deformed, the IPX5
waterproof performance and the IP5X dustproof
performance are impaired. If any abnormalities are found on
the cable glands, ask the manufacturer of the cable glands
for an inspection and repair.
To maintain the waterproof and dustproof performances of
the inverter, daily and periodic inspections are
recommended regardless of the presence or absence of
abnormalities.
General instruction
For clarity purpose, illustrations in this Instruction Manual
may be drawn with covers or safety guards removed.
Ensure all covers and safety guards are properly installed
prior to starting operation. For details on the PM motor,
refer to the Instruction Manual of the PM motor.