Mitsubishi Electric 800 Series Instruction Manual page 3

WARNING
Usage
 Stay away from the equipment when the retry function is set as it will
restart suddenly after a trip.
 Depending on the function settings of this product, 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
OFF the power of this product, 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 this inverter only with three-phase induction motors or with a PM
motor. Connection of any other electrical equipment to the inverter output
may damage the equipment.
 Performing pre-excitation (LX signal and X13 signal) under torque control
(Real sensorless vector control) may start the motor running at a low
speed even when the start command (STF or STR) is not input. This
product with the start command ON may also rotate the motor at a low
speed when the speed limit value is set to zero. Confirm that the motor
running will not cause any safety problems before performing pre-
excitation.
 Do not modify the equipment.
 Do not perform parts removal which is not instructed in the Instruction
Manual (Detailed). Doing so may lead to fault or damage of the product.
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. Doing so may shorten the life of this product.
 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 600 V class motor by 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.
 This product 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 sensorless vector control. Do not
use a synchronous motor, induction motor, or synchronous induction
motor.
 Do not connect a PM motor in the induction motor control settings (initial
settings). Do not use an induction motor in the PM sensorless vector
control settings. It will cause a 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.
 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 this product and the motor.
Before restarting the normal operation after the operation using the
emergency drive function, make sure that this product and the motor have
no fault.
 To maintain the security (confidentiality, integrity, and availability) of the
inverter and the system against unauthorized access, DoS
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.
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 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 is activated, 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.

DoS: A denial-of-service (DoS) attack disrupts services by overloading
systems or exploiting vulnerabilities, resulting in a denial-of-service
(DoS) state.
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
 For automatic restart after instantaneous power failure
Application of motor control labels
Apply the following labels to the inverter to avoid connecting motors not
intended for a particular motor control setting.
 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.
attacks,
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General instruction
3