Peripheral Devices - Mitsubishi Electric FR-E700 Instruction Manual

Wiring
3.1.1

Peripheral devices

Check the motor capacity of the inverter you purchased. Appropriate peripheral devices must be se-
lected according to the capacity. Refer to the following list and prepare appropriate peripheral
devices:
Motor Output [kW]
0.1
0.2
0.4
0.75
1.5
2.2
0.4
0.75
1.5
2.2
3.7
5.5
7.5
11
15
Tab. 3-1: Breakers and contactors
Select the MCCB according to the inverter power supply capacity. Install one MCCB per inverter.
The places with "xx" refer to the breaking capacity in case of short circuit. The correct selection
must be done depending on the design of the power input wiring.
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 stop during
motor driving, the electrical durability is 25 times.
When using the MC for emergency stop during motor driving or using on the motor side during
commercial-power supply operation, select the MC with class AC-3 rated current for the motor
rated current.
NOTES
When the inverter capacity is larger than the motor capacity, select an MCCB and a magnetic con-
tactor according to the inverter type and cable and reactor according to the motor output.
When the breaker on the inverter primary side trips, check for the wiring fault (short circuit), dam-
age to internal parts of the inverter, etc. Identify the cause of the trip, then remove the cause and
power on the breaker.
FR-E700 SC EC/ENE
Applicable Inverter Type
FR-E720S-008SC
FR-E720S-015SC
FR-E720S-030SC
FR-E720S-050SC
FR-E720S-080SC
FR-E720S-110SC
FR-E740-016SC
FR-E740-026SC
FR-E740-040SC
FR-E740-060SC
FR-E740-095SC
FR-E740-120SC
FR-E740-170SC
FR-E740-230SC
FR-E740-300SC
MCCB Inverter
MCCB Inverter
Breaker Selection
Reactor Connection
Without With
NF32 xx 3P 5 A
NF32 xx 3P 10 A
NF32 xx 3P 15 A NF32 xx 3P 10 A
NF63 xx 3P 20 A
NF32 xx 3P 40 A NF32 xx 3P 32 A
NF32 xx 3P 5 A
NF32 xx 3P 10 A
NF32 xx 3P 15 A NF32 xx 3P 10 A
NF63 xx 3P 20 A NF32 xx 3P 15 A
NF63 xx 3P 30 A NF63 xx 3P 20 A
NF63 xx 3P 30 A NF63 xx 3P 30 A
NF63 xx 3P 50 A NF63 xx 3P 40 A
NF125 xx 3P 100 A NF63 xx 3P 50 A
Fig. 3-2:
Installation of the breakers
3
3
Inverter and peripheral devices
Input Side Magnetic
Contactor
Reactor Connection
Without With
S-N10
S-N20, S-N21 S-N10
S-N10
S-N20 S-N11
S-N20
S-N25 S-N20
I001332E
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