Справочник Пользователя для Mitsubishi Electronics FR-V500

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* Values in parentheses indicate those for 400V class.
*Consult us for periodic inspection.

The inverter consists of many electronic parts such as semiconductor devices.
The following parts may deteriorate with age because of their structures or physical characteristics, leading to
reduced performance or fault of the inverter. For preventive maintenance, the parts must be replaced periodically.

Display

Display

(1) Check for LED lamp 

blown.

(2) Clean.

"

"

(1) Lamps indicate 

indicator lamps on 
panel.

(2) Clean with rag.

(1) Check that lamps 

are lit.

Meter

Check that reading is 
normal.

"

Check the readings of 
the meters on the panel.

Must satisfy 
specified and 
management 
values.

Voltmeter, 
ammeter, etc.

Motor

General

(1) Check for unusual 

vibration and noise.

(2) Check for unusual 

odor.

"

"

(1) Auditory, sensory, 

visual checks.

(2) Check for unusual 

odor due to 
overheat, damage, 
etc.

(1), (2) No fault.

Insulation 
resistance

Check with megger 
(across terminals and 
earth (ground) 
terminal).

"

Disconnect cables from 
U, V, W (including motor 
cables).

5M

Ω 

or more.

500V megger

Cooling fan

2 to 3 years

Replace (as required)

Main circuit smoothing capacitor

10 years

Replace (as required)

On-board smoothing capacitor

10 years

Replace the board (as required).

Relays 

—

Replace as required.