Mitsubishi Electric FR-E540 Instruction Manual download pdf (Page 12)

1.2 Basic Configuration

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 184.)

Earth leakage

circuit breaker

(ELB) or no-fuse

breaker (NFB)

The breaker should be selected with care

since a large inrush current flows in the

inverter at power on. (Refer to page 37.)

Magnetic

contactor

The magnetic contactor need not be

provided. When installed, do not use it to

start or stop the inverter. It might reduce the

inverter life.

(Refer to page 37.)

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

(1000kVA or more and wiring distance

within 10m (32.81feet)). Make selection

carefully.

Inverter

•

The inverter life 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 7.)

•

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

connected to the

output

Do not connect a power capacitor, surge

suppressor or radio noise filter to the output

side.

(MC)

Ground

DC reactor

(FR-BEL)

Ground

(NFB)

(ELB)

C reactor

(FR-BAL)

Ground

To prevent an electric shock, always ground

the motor and inverter.

The ground wiring from the power line of the

inverter as an induction noise reduction

technique is recommended to be run by

returning it to the ground terminal of the

inverter. (Refer to page 35)

Japanese Harmonic Suppression Guideline

The “harmonic suppression guideline for household appliances and general-purpose prod*ucts” was

issued by Ministry of Economy, Trade and Industry (formerly Ministry of International Trade and Industry)

in September, 1994. This guideline applies to the FR-F520-0.75K 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.

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Mitsubishi Electric FR-E540 Instruction Manual Page 12

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