Main circuit terminals
38
2.5.4
Applicable cables and wiring length
Select a recommended cable size to ensure that the voltage drop will be 2% or less.
If the wiring distance is long between the inverter and motor, the voltage drop in the main circuit will cause the motor torque to
decrease especially at a low speed.
The following table indicates a selection example for the wiring length of 20 m (440 V input power supply, ND rating).
• Converter unit (FR-CC2)
• Inverter
∗1
The gauge of the cable with the continuous maximum permissible temperature of 90°C or higher. (LMFC (heat resistant flexible cross-linked
polyethylene insulated cable), etc.). It assumes a surrounding air temperature of 40°C or lower and in-enclosure wiring.
∗2
The recommended cable size is that of the cable (THHN cable) with continuous maximum permissible temperature of 90°C. It assumes a
surrounding air temperature of 40°C or lower and in-enclosure wiring.
(For the use in the United States or Canada, refer to
∗3
The cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature of 90°C. It assumes a surrounding air
temperature of 40°C or lower and in-enclosure wiring.
(Selection example for use mainly in Europe.
∗4
The terminal screw size indicates the size of a terminal screw for R/L1, S/L2, T/L3, U, V, W, P/+, N/-, and a screw for earthing (grounding).
Screw size for earthing (grounding) is indicated in parentheses.
The line voltage drop can be calculated by the following formula:
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.
NOTE
• 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 crimp terminals with insulation sleeves to wire the power supply and motor.
Converter
model
FR-CC2-H[ ]
Terminal
screw
Size
Tightening
Torque
N
·
m
Crimp
terminal
Cable gauge
HIV cables, etc. (mm
2
AWG/MCM
PVC cables, etc.
(mm
2
)
R/L1,
S/L2,
T/L3
R/L1,
S/L2,
T/L3
P/+, N/-
Earthing
(grounding)
cable
R/L1,
S/L2,
T/L3
R/L1,
S/L2,
T/L3
Earthing
(grounding)
cable
315K
M12 (M10)
46
150-12
2
×
150
2
×
150
100
2
×
300
2
×
150
150
355K
M12 (M10)
46
C2-200
2
×
200
2
×
200
100
2
×
350
2
×
185
2
×
95
400K
M12 (M10)
46
C2-200
2
×
200
2
×
200
100
2
×
400
2
×
185
2
×
95
450K
M12 (M10)
46
C2-250
2
×
250
2
×
250
100
2
×
500
2
×
240
2
×
120
500K
M12 (M10)
46
C2-200
3
×
200
3
×
200
2
×
100
2
×
500
2
×
240
2
×
120
Inverter
model
FR-A842-[ ]
Terminal
screw
size
Tightening
Torque
N
·
m
Crimp
terminal
Cable gauge
HIV cables, etc. (mm
2
AWG/MCM
PVC cables, etc.
(mm
2
)
U, V, W
U, V, W
P/+, N/-
Earthing
(grounding)
cable
U, V, W
U, V, W
Earthing
(grounding)
cable
07700(315K) M12 (M10) 46
150-12
2
×
150
2
×
150
100
2
×
300
2
×
150
150
08660(355K) M12 (M10) 46
C2-200
2
×
200
2
×
200
100
2
×
350
2
×
185
2
×
95
09620(400K) M12 (M10) 46
C2-200
2
×
200
2
×
200
100
2
×
400
2
×
185
2
×
95
10940(450K) M12 (M10) 46
C2-250
2
×
250
2
×
250
100
2
×
500
2
×
240
2
×
120
12120(500K) M12 (M10) 46
C2-250
2
×
250
3
×
200
2
×
100
2
×
500
2
×
240
2
×
120
× wire resistance[mΩ/m] × wiring distance[m] × current[A]
1000
Summary of Contents for FR-A842-07700
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