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Main circuit terminals
1.2.2 Cables, wiring length, and crimping terminals
The following table indicates a selection example for the wiring length of 20m.
<200V class>
<400V class>
*The terminal screw size of the filter pack (FR-BFP) is the same as that of the inverter.
Wiring length
• FR-F540J-0.4K ............................. 50m or less
• FR-F520J-0.4K to 3.7K
FR-F540J-0.75K to 3.7K ............... 100m or less
• FR-F520J-5.5K to 15K
FR-F540J-5.5K to 15K .................. 500m or less
Applicable
Inverter
Ter-
minal
Screw
size
Tight-
ening
Torque
N
⋅
m
Crimping
Terminal
Cable Sizes
HIV Cable
(mm
2
)
AWG
PVC Cable
(mm
2
)
R, S, T U, V, W
R, S, T
U, V, W
R, S, T
U, V, W
R, S, T U, V, W
FR-F520J-0.4K to
0.75K
M3.5 1.2 2-3.5 2-3.5 2 2 14 14 2.5 2.5
FR-F520J-1.5K,
2.2K
M4 1.5 2-4 2-4 2 2 14 14 2.5 2.5
FR-F520J-3.7K
M4 1.5 5.5-4 5.5-4 3.5 3.5 12 12 4 2.5
FR-F520J-5.5K
M5 2.5 5.5-5 5.5-5 5.5 5.5 10 10 6 6
FR-F520J-7.5K
M5 2.5 14-5 8-5 14 8 6 8 16 10
FR-F520J-11K
M5 2.5 14-5 14-5 14 14 6 6 16 16
FR-F520J-15K
M6 4.4 22-6 22-6 22 22 4 4 25 25
Applicable
Inverter
Ter-
minal
Screw
size
Tight-
ening
Torque
N
⋅
m
Crimping
Terminal
Cable Sizes
HIV Cable
(mm
2
)
AWG
PVC Cable
(mm
2
)
R, S, T U, V, W R, S, T U, V, W R, S, T U, V, W R, S, T
U, V, W
FR-F540J-0.4K to
3.7K
M4 1.5 2-4 2-4 2 2 14 14 2.5 2.5
FR-F540J-5.5K
M4 1.5 5.5-4 2-4 3.5 2 12 14 4 2.5
FR-F540J-7.5K
M4 1.5 5.5-4 5.5-4 3.5 3.5 12 12 4 4
FR-F540J-11K
M4 1.5 5.5-4 5.5-4 5.5 5.5 10 10 6 6
FR-F540J-15K
M6 4.4 14-6 8-6 14 8 6 8 16 10
CAUTION
•If the wiring length of the FR-F540J-0.4K or 0.75K is 30m or more, use the
carrier frequency of 1kHz.
•When automatic torque boost is selected in Pr. 98 "automatic torque boost
selection (motor capacity)", the wiring length must be 30m maximum. (Refer
to page 133.)
•If the wiring distance between the inverter and motor is long, the motor torque
will decrease due to the voltage drop of the main circuit cable (especially at
low-frequency output).
Use thick cables so that a voltage drop is 2% or less.