Mitsubishi Electric 800 Series Instruction Manual page 43

CAUTION
Transportation and installation
 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 etc.) Otherwise the inverter may be damaged.
 This product must be used at an altitude of 2500 m or less, with 5.9 m/s
or less vibration at 10 to 55 Hz (directions of X, Y, Z axes). (For the

installation at an altitude above 1000 m, consider a 3% reduction in the
rated current per 500 m increase in altitude.) Otherwise the product may
be damaged.
 If halogens (including fluorine, chlorine, bromine, and iodine) contained in
fumigants for wood packages enter this product, the product may be
damaged. Prevent the entry of fumigant residuals or use an alternative
method such as heat disinfection. Note that sterilization or disinfection of
wood packages should be performed before packing the product.
Wiring
 Do not install a power factor correction capacitor, surge absorber, or radio
noise filter on the output side of this product. These devices may overheat
or burn out.
 The output of the inverter (terminals U, V, and W) must be correctly
connected to a motor. Otherwise the motor rotates inversely.
 PM motor terminals (U, V, W) hold high-voltage while the PM motor is
running even after the power is turned OFF. Before wiring, the PM motor
must be confirmed to be stopped. Otherwise you may get an electric
shock.
 Never connect a PM motor to the commercial power supply.
Applying the commercial power supply to input terminals (U, V, W) of a
PM motor will burn the PM motor. The PM motor must be connected with
the output terminals (U, V, W) of the inverter.
2

2.9 m/s or less for the FR-F840-04320(185K) or higher.
CAUTION
Test operation
 Before starting operation, each parameter must be confirmed and adjusted.
A failure to do so may cause some machines to make unexpected motions.
WARNING
Usage
 Stay away from the equipment after using the retry function in this product
as the equipment will restart suddenly after the output shutoff of this
product.
 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
this 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 problem 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 use a magnetic contactor on the product input side for frequent
starting/stopping of the product. Otherwise the life of the product
decreases.
 Use a noise filter or other means to minimize the electromagnetic
interference with other electronic equipment used nearby the product.
 Appropriate measures must be taken to suppress harmonics. Otherwise
power supply harmonics generated from the inverter may heat/damage
the power factor correction capacitor or a generator.
 To drive a 400 V class motor by this product, use an insulation-enhanced
motor, or take measures to suppress surge voltage. Otherwise surge
voltage attributable to the line constants may occur at the motor terminals,
deteriorating the insulation of the motor.
 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 inverter 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.
 The stop state of the product by the product's brake function (DC injection
brake function) cannot be held. Install a device to apply brakes to a motor
or equipment in a system for safety.
 Before running the product which have been stored and not been
operated for a long period, perform an inspection and test operation.
 To avoid damage to the product due to static electricity, 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.
2
CAUTION
Usage
 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.
 When the emergency drive operation is performed, the operation is
continued or the retry is repeated even when a fault occurs, which may
damage or burn the inverter and motor. Before restarting the normal
2 operation after using the emergency drive function, make sure that the
inverter and motor have no fault.
 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 this product or an external device controlling this product.
 If the breaker installed on this product input side trips, check for the wiring
fault (such as short circuit) 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 the inverter. Doing so will cause a failure.
Disposal
 The inverter 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.
 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
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
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 motors not
intended for a particular 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.

General instruction
CAUTION
Retry Function Has
Been Selected
CAUTION
Automatic Restart after
Instantaneous Power
Failure Has Been Selected
attack,