Mitsubishi Electric 800 Series Manual page 35

CAUTION
Transportation and installation
 As the inverter is a precision instrument, do not drop or subject it to
impact.
 The surrounding air temperature must be between -10 and +50°C (non-
freezing) for the inverter at HD (heavy duty), ND (normal duty) (initial
setting), or LD (light duty) rating, and between -10 and +40°C (non-
freezing) for the inverter at SLD (super light duty) rating. Otherwise the
inverter may be damaged.
 The ambient humidity must be 95% RH or less (non-condensing) for the
inverter. Otherwise the inverter may be damaged. (Refer to
details.)
 The temporary storage temperature (applicable to a short limited time
such as a transportation time) must be between -20 and +65°C.
Otherwise the inverter may be damaged.
 The inverter must be used indoors (without corrosive gas, flammable gas,
oil mist, dust and dirt) Otherwise the inverter may be damaged.
 Do not use this product at an altitude above 2500 m. Vibration should not
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exceed 5.9 m/s at 10 to 55 Hz in X, Y, and Z directions. Otherwise the

inverter may be damaged. (Refer to
 If halogen-based materials (fluorine, chlorine, bromine, iodine, etc.),
included in fumigants to sterilize or disinfect wooden packages, infiltrate
into the product, the product may be damaged. Prevent residual fumigant
components from being infiltrated into the product when packaging, or use
an alternative sterilization or disinfection method (heat disinfection, etc.).
Note that sterilization of disinfection of wooden package should be
performed before packing the product.
Wiring
 Do not install a power factor correction capacitor, surge absorber, or radio
noise filter. These devices on the output side of this product overheat or
burn out.
 The output of the inverter (output terminals U, V, and W) must be correctly
connected to a motor. Otherwise the motor will rotate inversely.
 Even with the power OFF, high voltage is still applied to the terminals U, V,
and W while the PM motor is running. Ensure the PM motor has stopped
before carrying out any wiring.
 Never connect a PM motor to a commercial power supply.
Connecting a commercial power supply to the input terminals (U, V, W) of
a PM motor will burn it out. The PM motor must be connected with the
output terminals (U, V, W) of the inverter.
Test operation
 Before starting operation, confirm or adjust the parameter settings. A
failure to do so may cause some machines to make unexpected motions.
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
2.9 m/s or less for the FR-A840-04320(160K) or higher.
WARNING
Usage
 Stay away from the equipment when the retry function is set as it will
restart suddenly after the product output shutoff.
 Depending on the product's function settings, the product does not stop its
output even when the STOP/RESET key on the operation panel is
pressed. To prepare for it, provide a separate circuit and switch (to turn
the product power OFF, or apply a mechanical brake, etc.) for an
emergency stop.
 Be sure to turn OFF the start (STF/STR) signal before clearing the fault as
the product will restart the motor suddenly after a fault is cleared.
 Do not use a PM motor for an application where the PM motor is driven by
its load and runs at a speed higher than the maximum motor speed.
 Use only a three-phase induction motor or PM motor as a load on this
product. Connection of any other electrical equipment to the product
output may damage the equipment.
 Performing pre-excitation (LX signal and X13 signal) under torque control
may start the motor running at a low speed even when the start command
(STF or STR) is not input. The motor may run also at a low speed when
the speed limit value = 0 with a start command input. It must be confirmed
that the motor running will not cause any safety problems before
performing pre-excitation.
 Do not modify the product.
 Do not remove any part which is not instructed to be removed in the
Instruction Manual (Detailed). Doing so may lead to a failure or damage.
CAUTION
Usage
 The electronic thermal O/L relay function may not be enough for
protection of the motor from overheating. It is recommended to install an
external thermal relay or a PTC thermistor for overheat protection.
 Do not repeatedly start or stop this product with a magnetic contactor on
its input side. Doing so may shorten the life of this product.
 Use a noise filter or other means to minimize the electromagnetic
interference with other electronic equipment used nearby the product.
 Appropriate precautions must be taken to suppress harmonics. Otherwise
power harmonics generated from the product may heat/damage a power
factor correction capacitor or a 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.
 As all parameters return to their initial values after the Parameter clear or
All parameter clear is performed, the parameters must be set again as
required before the operation is started.
 The product can be easily set for high-speed operation. Therefore,
consider all things related to the operation such as the performance of a
motor and equipment in a system before the setting change.
 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.
 To avoid damage to the product due to static electricity, static electricity in
your body must be discharged before you touch the product.
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page 3 for
page 3 for details.)
CAUTION
Usage
 Only one PM motor can be connected to one of this product.
 A PM motor must be used under PM sensorless vector control. Do not
use a synchronous motor, induction motor, or synchronous induction
motor.
 Do not connect a PM motor to the product with it set to the induction motor
control setting (initial setting). Do not connect an induction motor to the
product with it set to the PM sensorless vector control setting. Doing so
will cause failure.
 As a process of starting a PM motor, turn ON this product power first, and
then close the contactor on the output side of this product.
 In order to protect the inverter and the system against unauthorized
access by external systems via network, take security measures including
firewall settings.
 In order to protect security (confidentiality, integrity, and availability) of the
inverter and the system against unauthorized access, DoS
computer virus, or any other form of cyberattack by external systems via
network, take security measures that include firewall or virtual private
network (VPN) settings and installation of antivirus software on
computers. We shall not be liable for any problems resulting from failures
of the inverter or the system that might occur due to DoS attack,
unauthorized access, computer virus, or any other form of cyberattack.
 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.
Emergency stop
 A safety backup such as an emergency brake must be provided for
devices or equipment in a system to prevent hazardous conditions in case
of failure of the inverter or an external device controlling the inverter.
 If the breaker installed on this product input side trips, check for wiring
faults (such as short circuits) and damage to internal parts of the inverter,
etc. Identify and remove the cause of the trip before resetting the tripped
breaker and applying the power to this product again.
 When any protective function is activated, take an appropriate corrective
action before resetting this product to resume the operation.
Maintenance, inspection and parts replacement
 Do not carry out a megger (insulation resistance) test on the control circuit
of this product. Doing so will cause failure.
Disposal
 The product must be treated as industrial waste.

DoS: A denial-of-service (DoS) attack disrupts services by overloading
systems or exploiting vulnerabilities, resulting in a denial-of-service
(DoS) state.
General instruction
 For clarity, 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.
Application of caution labels
Caution labels are used to ensure safety during use of Mitsubishi Electric
inverters.
Apply the following labels to the inverter if the "retry function" and/or
"automatic restart after instantaneous power failure" have been enabled.
 For the retry function
CAUTION
Stay away from the motor and machine.
They will start suddenly (after given
time has elapsed) when alarm occurs.
 For automatic restart after instantaneous power failure
CAUTION
Automatic Restart after
Instantaneous Power
Failure Has Been Selected
Stay away from the motor and machine.
They will start suddenly (after reset
time has elapsed) when
instantaneous power failure occurs.
Application of motor control labels
Apply the following labels to the inverter to avoid connecting a motor
different from those intended for the motor control setting.
Induction motor setting
The inverter is set for the induction
motor control.
IM LED is ON during induction motor
control.
Do not drive a PM motor.
PM motor control setting
The inverter is set for the PM motor
control.
PM LED is ON during PM motor control.
Do not drive an induction motor.
attack,

Retry Function Has
Been Selected