Mitsubishi Electric FR-F820-00046 Installation Manuallines page 23

400V class, FR-F842 (when input power supply is 440V)
(For the applicable cables of the converter unit (FR-CC2) refer to the FR-CC2 Instruction Manual.)
Applicable
Terminal screw
inverter type
4
size *
FR-F842-
07700(355K) M12 (M10)
08660(400K) M12 (M10)
09620(450K) M12 (M10)
10940(500K) M12 (M10)
12120(560K) M12 (M10)
*1
For all the 200V class capacities and FR-F840-01160(55K) or lower, the recommended cable size is that of the HIV cable (600V class
2 vinyl-insulated cable) with continuous maximum permissible temperature of 75°C. Assumes that the surrounding air temperature is
50°C or less and the wiring distance is 20m or less.
For the FR-F840-01800(75K) or higher, and the FR-F842 models, the recommended cable size is that of the LMFC cable (heat
resistant flexible cross-linked polyethylene insulated cable) with continuous maximum permissible temperature of 90°C. Assumes that
the surrounding air temperature is 50°C or less (40°C or less for the FR-F842 models) and wiring is performed in an enclosure.
*2
For all the 200V class capacities and FR-F840-00930(45K) or lower, the recommended cable size is that of the THHW cable with
continuous maximum permissible temperature of 75°C. Assumes that the surrounding air temperature is 40°C or less and the wiring
distance is 20m or less.
For the FR-F840-01160(55K) or higher, and the FR-F842 models, the recommended cable size is that of THHN cable with continuous
maximum permissible temperature of 90°C. Assumes that the surrounding air temperature is 40°C or less and wiring is performed in
an enclosure.
(Selection example for use mainly in the United States.)
*3
For the FR-F820-00930(22K) or lower and FR-F840-00930(45K) or lower, the recommended cable size is that of the PVC cable with
continuous maximum permissible temperature of 70°C. Assumes that the surrounding air temperature is 40°C or less and the wiring
distance is 20m or less.
For the FR-F820-01250(30K) or higher, the FR-F840-01160(55K) or higher, and the FR-F842 models, the recommended cable size is
that of XLPE cable with continuous maximum permissible temperature of 90°C. Assumes that the surrounding air temperature is 40°C
or less and wiring is performed in an enclosure. (Selection example for use mainly in Europe.)
*4
FR-F820/F840: The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, P/+, N/–, P1, P3, and a screw for
earthing.
The screw size for earthing of FR-F820-00930(22K) or higher and FR-F840-04320(185K) or higher is indicated in brackets.
The screw size for P/+ terminal for connecting an option to FR-F840-03250(132K) or FR-F840-03610(160K) is indicated in brackets.
FR-F842: The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, P/+, N/–, and a screw for earthing.
The screw size for earthing is indicated in brackets.
The line voltage drop can be calculated by the following expression:
√3 × wire resistance [mΩ/m] × wiring distance [m] x current [A]
Line voltage drop [V] =
Use a larger diameter cable when the wiring distance is long or when it is desired to decrease the voltage drop (torque
reduction) in the low speed range.
CAUTION
Tighten the terminal screw to the specified torque.
A screw that has been tightened too loosely can cause a short circuit or malfunction.
A screw that has been tightened too tightly can cause a short circuit or malfunction due to the unit breakage.
Use crimping terminals with insulation sleeve to wire the power supply and motor.
Crimping
terminal
Tightening
torque [Nm]
U, V, W
46 C2-200
46 C2-250
46 C2-250
46 C2-200
46 C2-200
1000
Cable sizes
1
HIV, etc. [mm²] *
Earth
U, V, W P/+, N/– cable
gauge
2×200 2×200 100
2×250 2×200 100
2×250 2×250 2×100
3×200 3×200 2×100
3×200 3×200 2×100
WIRING
AWG/
PVC, etc. [mm²] *
2
MCM *
Earth
U, V, W U, V, W cable
gauge
2×400 2×185 2×95
2×500 2×240 2×120
2×500 2×240 2×120
3×350 3×185 2×150
3×400 3×185 2×150
3
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