Справочник Пользователя для Mitsubishi Electronics FR-A500

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The FR-A500 is UL-listed as a product for use in an enclosure. 

Design an enclosure so that the ambient temperature, humidity and ambience of the inverter will satisfy the

specifications. (Refer to page 223.)

When installing the inverter in the United States of America, protect its branch cables in accordance with the

National Electrical Code and local standards.

When installing the inverter in Canada, protect its branch cables in accordance with the National Electrical

Code and the corresponding State Standards.

Suitable For Use in A Circuit Capable of Delivering Not More Than 5 or 10kA rms Symmetrical Amperes, 230

or 500 Volts Maximum.

Suitable For Use in A Circuit Capable of Delivering Not More Than 10kA rms Symmetrical Amperes, 500

Volts Maximum.

For wiring the input (R, S, T) and output (U, V, W) terminals of the inverter, use the UL-recognized copper

wires (rated at 75°C) and round crimping terminals. To crimp the crimping terminals, use the crimping tool

recommended by the terminal maker.

When using the electronic overcurrent protection function as motor overload protection, set the rated motor

current in Pr. 9 "electronic thermal O/L relay".

When connecting two or more motors to the inverter, install external thermal relays for individual motors.

Reference: Motor overload protection characteristics

0

50

100

150 180200

240

180

120

60

O

p

e

ra

tion tim

e

 (

s

)

50% setting
(Note 1, 2)

100% setting
(Note 2)

(Note 1) When you set the 50% value (current
              value) of the rated inverter output current.
(Note 2) The % value denotes the percentage of
              the current value to the rated inverter
              output current, not to the rated motor current.
(Note 3) This characteristic curve will be described
              even under operation of 6Hz or higher
              when you set the electronic overcurrent
              protection dedicated to the Mitsubishi 
              constant-torque motor.

30Hz or higher
             (Note 3)

Inverter output current (%)

(% to rated inverter output current)

Electronic overcurrent 
protection for transistor
protection

20Hz
10Hz

Protection activating range 
Range on the right of characteristic curve
Normal operating range
Range on the left of characteristic curve