Instruction manual

4
OUTLINE
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.)
Name Description
Power supply
Use the power supply within the permissible power
supply specifications of the inverter. (Refer to page
190.)
Ground
leakage circuit
breaker or
moulded case
circuit breaker
The breaker should be selected with care since a
large inrush current flows in the inverter at power
on. (Refer to page 41.)
Magnetic
contactor
Install for your safety. (Refer to page 42.) Do not
use this magnetic contactor to start or stop the
inverter. It might reduce the inverter life. (Refer to
page 41.)
Reactors
The reactors must be used when the power factor is
to be improved or the inverter is installed near a large
power supply system (500KVA or more and wiring
distance within 10m (32.81 feet)). Make selection
carefully.
Inverter
• The life of the inverter is influenced by ambient
temperature. The ambient temperature should be
as low as possible within the permissible range.
This must be noted especially when the inverter is
installed in an enclosure. (Refer to page 14.)
• Wrong wiring might lead to damage of the
inverter. The control signal lines should be kept
away from the main circuit to protect them from
noise. (Refer to page 16.)
Devices
connected to
the output
Do not connect a power capacitor, surge suppressor
or capacitor type filter on the output side.
When installing a moulded case circuit breaker on
the output side of the inverter, contact each
manufacturer for selection of the moulded case
circuit breaker.
Ground
To prevent an electric shock, always ground the
motor and inverter.
For reduction of induction noise from the power
line of the inverter, it is recommended to wire the
ground cable by returning it to the ground terminal
of the inverter. (Refer to page 39.)
(MC)
(MCCB)
or
(ELB)
AC
reactor
DC reactor
Ground
Ground
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