Peripheral devices
14
INSTALLATION AND WIRING
2.1.2 Peripheral devices
Selecting the converter unit (FR-CC2)
Select the capacity of the FR-CC2 converter unit according to the connected motor capacity.
The applicable motor capacity indicated is the maximum capacity applicable for use of the Mitsubishi 4-pole standard motor.
Selecting the breaker/magnetic contactor
Check the model of the inverter and the converter unit you purchased. Appropriate peripheral devices must be selected
according to the capacity.
Refer to the table below to prepare appropriate peripheral devices.
• 400 V class
NOTE
• When the converter unit capacity is larger than the motor capacity, select an MCCB and a magnetic contactor according to
the converter unit model, and select cables and reactors according to the motor output.
• When the breaker on the converter unit's input side trips, check for the wiring fault (short circuit), damage to internal parts of
the inverter and the converter unit, etc. The cause of the trip must be identified and removed before turning ON the power of
the breaker.
Motor
capacity
(kW)
Converter
unit
FR-CC2-[ ]
Inverter
SLD (superlight duty) LD (light duty)
ND (normal duty,
initial value)
HD (heavy duty)
Model
FR-A842-[ ]
Rated
current
(A)
Model
FR-A842-[ ]
Rated
current
(A)
Model
FR-A842-[ ]
Rated
current
(A)
Model
FR-A842-[ ]
Rated
current
(A)
280 H315 - - - - - - - - - 315K 07700 547
315 H315K - - - - - - 315K 07700 610 355K 08660 610
355 H355K - - - 315K 07700 683 355K 08660 683 400K 09620 683
400 H400K 315K 07700 770 355K 08660 770 400K 09620 770 450K 10940 770
450 H450K 355K 08660 866 400K 09620 866 450K 10940 866 500K 12120 866
500 H500K 400K 09620 962 450K 10940 962 500K 12120 962 - - -
Motor
output
(kW)
Applicable converter
model
Molded case circuit breaker (MCCB)
or
earth leakage circuit breaker (ELB)
(NF, NV type)
Input-side magnetic contactor
315 FR-CC2-H315K 700A S-N600
355 FR-CC2-H355K 800A S-N600
400 FR-CC2-H400K 900A S-N800
450 FR-CC2-H450K 1000A 1000A rated product
500 FR-CC2-H500K 1200A 1000A rated product
Assumes the use of a Mitsubishi 4-pole standard motor with the power supply voltage of 400
VAC 50 Hz.
Select an MCCB according to the power supply capacity.
Install one MCCB per converter.
For the use in the United States or Canada, provide the appropriate UL and cUL listed fuse or
UL489 molded case circuit breaker (MCCB) that is suitable for branch circuit protection. (Refer
to page 111.)
The magnetic contactor is selected based on the AC-1 class. The electrical durability of magnetic contactor is 500,000 times. When the
magnetic contactor is used for emergency stops during motor driving, the electrical durability is 25 times.
If using an MC for emergency stop during driving the motor, select an MC regarding the converter unit input side current as JEM1038-AC-3 class
rated current. When using an MC on the inverter output side for commercial-power supply operation switching using a general-purpose motor,
select an MC regarding the rated motor current as JEM1038-AC-3 class rated current.
MCCB Converter unit
MCCB Converter unit
M
M
INV
INV
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