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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.)
(MC)
(NFB)
or
(ELB)
Ground
Ground
DC reactor
(FR-BEL)
AC reactor
(FR-BAL)
Earth leakage
circuit breaker
or no-fuse breaker
Power supply
Magnetic
contactor
Inverter
DeviceNet master
Terminal resistor
DeviceNet drop cable
Each master accepts up to 63 inverters.
Terminal resistor
Master controller
Harmonic Suppression Guideline
The "harmonic suppression guideline for household appliances and general-purpose
products" issued by ex-Ministry of International Trade and Industry (present Ministry of
Economy, Trade and Industry) in September, 1994 applies to the 3.7K and less models.
By installing the power factor improving reactor (FR-BEL or FR-BAL), inverters comply
with the "harmonic suppression techniques for transistorized inverters (input current 20A
or less)" established by the Japan Electrical Manufacturers' Association.