Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 3

4. Additional Instructions
Also the following points must be noted to prevent an accidental
failure, injury, electric shock, etc.
(1) Transportation and Mounting
 The product must be transported in correct method that
corresponds to the weight. Failure to do so may lead to
injuries.
 Do not stack the boxes containing drive units higher than
the number recommended.
 The product must be installed to the position where
withstands the weight of the product according to the
information in the Instruction Manual.
 Do not install or operate the drive unit if it is damaged or has
parts missing.
 When carrying the drive unit, do not hold it by the front
cover or setting dial; it may fall off or fail.
 Do not stand or rest heavy objects on the product.
 The drive unit mounting orientation must be correct.
 Foreign conductive objects must be prevented from
entering the drive unit. That includes screws and metal
fragments or other flammable substance such as oil.
 As the drive unit is a precision instrument, do not drop or
subject it to impact.
 The drive unit must be used under the following
environment: Otherwise the drive unit may be damaged.
Surrounding
air -10°C to +50°C (non-freezing)
temperature
Ambient
90%RH or less (non-condensing)
humidity
Storage
-20°C to +65°C 
temperature
Indoors (free from corrosive gas, flammable gas,
Atmosphere
oil mist, dust and dirt)
Maximum 1000 m.
Altitude/
2
5.9m/s
vibration
axes)
 Temperature applicable for a short time, e.g. in transit.
 If halogen-based materials (fluorine, chlorine, bromine,
iodine, etc.) infiltrate into a Mitsubishi Electric product, the
product will be damaged. Halogen-based materials are often
included in fumigant, which is used to sterilize or disinfest
wooden packages. When packaging, prevent residual
fumigant components from being infiltrated into Mitsubishi
Electric products, or use an alternative sterilization or
disinfection method (heat disinfection, etc.) for packaging.
Sterilization of disinfection of wooden package should also
be performed before packaging the product.
(2) Wiring
 Do not install a power factor correction capacitor or surge
suppressor/capacitor type filter on the drive unit output
side. These devices on the drive unit output side may be
overheated or burn out.
 The connection orientation of the output cables U, V, W to
the motor affects the rotation direction of the motor.
 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
drive unit.
A-2
CAUTION
or less at 10 to 55Hz (directions of X, Y, Z
CAUTION
(3) Trial run
 Before starting operation, each parameter must be
confirmed and adjusted. A failure to do so may cause some
machines to make unexpected motions.
(4) Usage
WARNING
 A PM motor and the drive unit must be used in the specified
capacity combination.
 Do not use multiple PM motors with one drive unit.
 Any person must stay away from the equipment when the
retry function is set as it will restart suddenly after trip.
 Since pressing the STOP/RESET key may not stop output
depending on the function setting status, separate circuit
and switch that make an emergency stop (power OFF,
mechanical brake operation for emergency stop, etc.) must
be provided.
 OFF status of the start signal must be confirmed before
resetting the drive unit fault. Resetting drive unit alarm with
the start signal ON restarts the motor suddenly.
 Do not use a PM motor in an application where a motor is
driven by its load and runs at a speed higher than the
maximum motor speed.
 According to the motor to be connected, perform PM
parameter initialization. Incorrect initial setting of
parameters may damage the motor.
The parameters for motor operation are initially set for an S-
PM geared motor.
When other PM motors are used, set parameters according
to the motor.
 Do not use the drive unit for a load other than the PM motor.
Connection of any other electrical equipment to the drive
unit output may damage the equipment.
 Do not modify the equipment.
 Do not perform parts removal which is not instructed in this
manual. Doing so may lead to fault or damage of the product.
 The electronic thermal relay function does not guarantee
protection of the motor from overheating. It is recommended
to install an external thermal for overheat protection.
 Do not use a magnetic contactor on the drive unit input for
frequent starting/stopping of the drive unit. Otherwise, the
life of the drive unit decreases.
 The effect of electromagnetic interference must be reduced
by using an EMC filter or by other means. Otherwise nearby
electronic equipment may be affected.
 Appropriate measures must be taken to suppress
harmonics. Otherwise power supply harmonics from the
drive unit may heat/damage the power factor correction
capacitor and generator.
 When parameter clear or all parameter clear is performed,
the required parameters must be set again before starting
operations because all parameters return to the initial value.
 The drive unit can be easily set for high-speed operation.
Before changing its setting, the performances of the motor
and machine must be fully examined.
 Stop status cannot be hold by the drive unit's brake
function. In addition to the drive unit's brake function, a
holding device must be installed to ensure safety.
 Before running a drive unit which had been stored for a long
period, inspection and test operation must be performed.
 Static electricity in your body must be discharged before
you touch the product. Otherwise the product may be
damaged.
 In the system with a PM motor, the drive unit power must be
turned ON before closing the contacts of the contactor at the
output side.
 If you are installing the drive unit to drive a three-phase
device while you are contracted for lighting and power
service, consult your electric power supplier.
CAUTION
CAUTION