Basic Configuration - Mitsubishi Electric FR-A520-0.4K-NA Instruction Manual

1.2 Basic Configuration

1.2 Basic Configuration
1.2.1 Basic configuration
The following devices are required to operate the inverter. Proper peripheral devices must be selected and
correct connections made to ensure proper operation. Incorrect system configuration and connections can
cause the inverter to operate improperly, its life to be reduced considerably, and in the worst case, the
inverter to be damaged.
Please handle the inverter properly in accordance with the information in each section as well as the
precautions and instructions of this manual. (For connections of the peripheral devices, refer to the
corresponding manuals.)
(NFB)
or
(ELB)
(MC)
AC reactor
(FR-BAL)
Ground
Japanese Harmonic Suppression Guideline
The "harmonic suppression guideline for household appliances and general-purpose products" was issued
by the Ministry of International Trade and Industry in September, 1994. This guideline applies to the
FR-A520-0.4K to 3.7K. By connection of the power factor improving reactor (FR-BEL or FR-BAL), this
product conforms to the "harmonic suppression technique for transistorized inverters (input current 20A or
less)" set forth by the Japan Electrical Manufactures' Association.
DC reactor
(FR-BEL)
Ground
Name
Use the power supply within the permissible
Power supply power supply specifications of the inverter.
(Refer to page 39.)
Earth leakage
The breaker should be selected with care
circuit breaker
since a large inrush current flows in the
(ELB) or no-fuse
inverter at power on. (Refer to page 39.)
breaker (NFB)
The magnetic contactor need not be
provided. When installed, do not use it to
Magnetic
start or stop the inverter. It might reduce the
contactor
inverter life.
(Refer to page 39.)
The reactors must be used when the power
factor is to be improved or the inverter is
installed near a large power supply system
Reactors
(1000KVA or more and wiring distance
within 10m (32.81 feet)). Make selection
carefully.
z
The inverter life is influenced by ambient
temperature. The ambient temperature
should be as low as possible within the
permissible
This must be noted especially when the
inverter is installed in an enclosure.
Inverter (Refer to page 7.)
z
Incorrect wiring might lead to inverter
damage. The control signal lines should
be kept away from the main circuit to
protect them from noise. (Refer to page
9.)
Devices Do not connect a power capacitor, surge
connected to the suppressor or radio noise filter to the output
output side.
To prevent an electric shock, always ground
Ground
the motor and inverter.
2
OUTLINE
Description
range.