Mitsubishi Electronics A800 사용자 설명서
Main circuit terminals
30
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, 150% overload
current rating for 1 minute).
• Converter unit (FR-CC2)
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, 150% overload
current rating for 1 minute).
• Converter unit (FR-CC2)
• Inverter
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.
polyethylene insulated cable), etc.). It assumes a surrounding air temperature of 40°C or lower and in-enclosure wiring.
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.
(Selection example for use mainly in the United States.)
surrounding air temperature of 40°C or lower and in-enclosure wiring.
(Selection example for use mainly in the United States.)
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.
temperature of 40°C or lower and in-enclosure wiring.
(Selection example for use mainly in Europe.
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.
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.
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.
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 sleeves to wire the power supply and motor.
Converter
model
FR-CC2-[ ]
Terminal
screw
Size
Size
Tightening
Torque
N·m
Crimping
terminal
Cable gauge
HIV cables, etc. (mm
2
)
AWG/MCM
PVC cables, etc.
(mm
2
R/L1,
S/L2,
S/L2,
T/L3
R/L1,
S/L2,
S/L2,
T/L3
P/+, N/-
Earthing
(grounding)
cable
R/L1,
S/L2,
S/L2,
T/L3
R/L1,
S/L2,
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-A840-[ ]
Terminal
screw
size
Tightening
Torque
N·m
Crimping
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