Mitsubishi Electric FR-E720-0.4K Instruction Manual page 2

This Instruction Manual (Basic) provides handling information and precautions for use of this product.
Please forward this Instruction Manual (Basic) to the end user.
This section is specifically about safety matters
Do not attempt to install, operate, maintain or inspect this
product until you have read through the Instruction Manual
(Basic) and supplementary documents carefully and can use
the equipment correctly. Do not use this product until you
have a full knowledge of this product mechanism, safety
information and instructions.
In this Instruction Manual (Basic), the safety instruction levels
are classified into "WARNING" and "CAUTION".
Incorrect handling may cause hazardous
WARNING
conditions, resulting in death or severe
injury.
Incorrect handling may cause hazardous
CAUTION
conditions, resulting in medium or slight
injury, or may cause only material
damage.
CAUTION
The level may even lead to a serious
consequence according to conditions. Both instruction levels
must be followed because these are important to personal
safety.
1. Electric Shock Prevention
WARNING
 While the power of this product is ON, do not remove the
front cover or the wiring cover. Do not run this product with
the front cover or the wiring cover removed. Otherwise you
may access the exposed high voltage terminals or the
charging part of the circuitry and get an electric shock.
 Even if power is OFF, do not remove the front cover except
for wiring or periodic inspection. You may accidentally
touch the charged inverter circuits and get an electric
shock.
 Before wiring or inspection, power must be switched OFF.
To confirm that, LED indication of the operation panel must
be checked. (It must be OFF.) Any person who is involved in
wiring or inspection shall wait for at least 10 minutes after
the power supply has been switched OFF and check that
there are no residual voltage using a tester or the like. The
capacitor is charged with high voltage for some time after
power OFF, and it is dangerous.
 This product must be earthed (grounded). Earthing
(grounding) must conform to the requirements of national and
local safety regulations and electrical code (NEC section 250,
IEC 61140 class 1 and other applicable standards).
A neutral-point earthed (grounded) power supply for 400V
class of this product in compliance with EN standard must be
used.
 Any person who is involved in wiring or inspection of this
product shall be fully competent to do the work.
 This product body must be installed before wiring.
Otherwise you may get an electric shock or be injured.
 Do not touch the setting dial or keys with wed hands. Doing
so may cause an electric shock.
 Do not subject the cables to scratches, excessive stress,
heavy loads or pinching. Doing so may cause an electric
shock.
 Do not change the cooling fan while power is ON, as it is
dangerous.
 Do not touch the printed circuit board or handle the cables
with wet hands. Doing so may cause an electric shock.
 Never touch the motor terminals, etc. right after powering
OFF as the DC voltage is applied to the motor for 1 second
at powering OFF if the main circuit capacitor capacity is
measured. Doing so may cause an electric shock.
A-1
2. Fire Prevention
CAUTION
 This product must be installed on a nonflammable wall
without holes (so that nobody touches the inverter heatsink
on the rear side, etc.). Mounting it to or near flammable
material can cause a fire.
 If this product becomes faulty, the product power must be
switched OFF. A continuous flow of large current could
cause a fire.
 When using a brake resistor, a sequence that will turn OFF
power when a fault signal is output must be configured.
Otherwise the brake resistor may overheat due to damage of
the brake transistor and possibly cause a fire.
 Do not connect a resistor directly to the DC terminals P/+
and N/-. Doing so could cause a fire.
 Be sure to perform daily and periodic inspections as specified in
the Instruction Manual. If this product is used without inspection,
an explosion, failure, or fire may occur.
3. Injury Prevention
CAUTION
 The voltage applied to each terminal must be the ones
specified in the Instruction Manual. Otherwise an explosion
or damage may occur.
 The cables must be connected to the correct terminals.
Otherwise an explosion or damage may occur.
 Polarity must be correct. Otherwise an explosion or damage
may occur.
 While power is ON or for some time after power-OFF, do not
touch this product as they will be extremely hot. Doing so
can cause burns.
4. Additional Instructions
Also the following points must be noted to prevent an accidental
failure, injury, electric shock, etc.
(1) Transportation and Mounting
CAUTION
 Use proper lifting techniques or a trolley when carrying
products. Failure to do so may lead to injuries.
 Do not stack the boxes containing this product higher than
the number recommended.
 This 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 this product if it is damaged or has
parts missing.
 When carrying this product, 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.
 Ensure the mounting orientation of this product is correct.
 Foreign conductive objects must be prevented from
entering this product. That includes screws and metal
fragments or other flammable substance such as oil.
 As this product is a precision instrument, do not drop or
subject it to impact.
 This product must be used under the following
environment. Otherwise the product 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 1000m
Altitude/
2
5.9m/s or less at 10 to 55Hz (directions of X, Y, Z
vibration
axes)
 Temperature applicable for a short time, e.g. in transit.
 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.