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*1
For the FR-A820-03160(55K)-R2R or lower and the FR-A840-01800(55K)-R2R or lower, it is the gauge of a cable (HIV cable (600 V class heat-
resistant PVC insulated wire), etc.) with the continuous maximum permissible temperature of 75 °C. Assumes that the surrounding air
temperature is 50 °C or less and the wiring distance is 20 m or less.
For the FR-A820-03800(75K)-R2R or higher and the FR-A840-02160(75K)-R2R or higher, it is the gauge of a cable with the continuous maximum
permissible temperature of 90 °C or higher. Assumes that the surrounding air temperature is 50 °C or less and wiring is performed in an
enclosure.
*2
For all the 200 V class capacities and the FR-A840-01160(45K)-R2R or lower, it is the gauge of a cable with continuous maximum permissible
temperature of 75 °C (THHW cable). Assumes that the surrounding air temperature is 40 °C or less and the wiring distance is 20 m or less.
For the FR-A840-01800(55K)-R2R or higher, it is the gauge of a cable with continuous maximum permissible temperature of 90 °C (THHN cable).
Assumes that the surrounding air temperature is 40 °C or less and wiring is performed in an enclosure,
(For the use in the United States or Canada, refer to "Instructions for UL and cUL" on page 58.)
*3
For the FR-A820-00770(15K)-R2R or lower and the FR-A840-01160(45K)-R2R or lower it is the gauge of a cable with continuous maximum
permissible temperature of 70 °C (PVC cable). Assumes that the surrounding air temperature is 40 °C or less and the wiring distance is 20 m or
less.
For the FR-A820-00930(18.5K)-R2R or higher and the FR-A840-01800(55K)-R2R or higher, it is the gauge of a cable with continuous maximum
permissible temperature of 90 °C (XLPE cable). 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
The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, PR, PX, P/+, N/–, P1, P3, and a screw for earthing (grounding).
The screw size for PR and PX terminals of FR-A820-00340(5.5K)-R2R and FR-A820-00490(7.5K)-R2R is indicated in brackets.
The screw size for P/+ terminal for connecting an option to FR-A840-03250(110K)-R2R or FR-A840-03610(132K)-R2R is indicated in brackets.
The screw size for earthing (grounding) of FR-A840-04320(160K)-R2R or higher is indicated in parenthesis.
400 V class, FR-A842 (440 V input power supply, ND rating)
(For the applicable cables of the converter unit (FR-CC2) refer to the FR-CC2 Instruction Manual.)
Applicable
Terminal screw
inverter type
*4
FR-A842-m-
size
R2R
07700(315K)
M12 (M10)
08660(355K)
M12 (M10)
09620(400K)
M12 (M10)
10940(450K)
M12 (M10)
12120(500K)
M12 (M10)
*1
The gauge of the cable with the continuous maximum permissible temperature of 90 °C or higher (LMFC cable (heat resistant flexible cross-
linked polyethylene insulated cable), etc.). Assumes that the surrounding air temperature is 40 °C or less and wiring is performed in an
enclosure.
*2
The recommended cable size is that of the cable (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
The recommended cable size is that of the cable (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
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 (grounding).
The screw size for earthing (grounding) is indicated in brackets.
The line voltage drop can be calculated by the following expression:
3 × wire resistance [m/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
O The above shows a selection example for the ND rating. For selecting the SLD rating, LD rating, SND rating, or HD rating, refer to
the "FR-A800 Instruction Manual (Detailed)". For selecting the ratings of FR-A842-R2R refer to the "FR-A802-R2R (Separated
Converter Type) Instruction Manual (Hardware)".
O 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.
O Use crimping terminals with insulation sleeve to wire the power supply and motor.
Crimp
terminal
Tightening
torque [Nm]
U, V, W
U, V, W
46
150-12
46
C2-200
46
C2-200
46
C2-250
46
C2-250
1000
Cable gauge
*1
HIV, etc. [mm²]
Earthing
P/+, N/–
(grounding)
cable
2×150
2×150
100
2×200
2×200
100
2×200
2×200
100
2×250
2×250
100
2×250
3×200
2×100
WIRING
AWG/
*3
PVC, etc. [mm²]
*2
MCM
Earthing
U, V, W
U, V, W
(grounding)
cable
2×300
2×150
150
2×350
2×185
2×95
2×400
2×185
2×95
2×500
2×240
2×120
2×500
2×240
2×120
17
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