14
Wiring
400V class (when input power supply is 440V based on the rated current for 110% overload for 1 minute)
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.
Applicable
Inverter Type
Terminal
Screw
Size
*4
Tightening
Torque
N·m
Crimping
Terminal
Cable Sizes
HIV, etc. (mm
2
)
*1
AWG
*2
PVC, etc. (mm
2
)
*3
R/L1,
S/L2,
T/L3
U, V,
W
R/L1,
S/L2,
T/L3
U, V,
W
Ground
Cable
Gauge
R/L1,
S/L2,
T/L3
U, V, W
R/L1,
S/L2,
T/L3
U, V, W
Ground
Cable
Gauge
FR-F740-00023 to
00083-NA
M4
1.5
2-4
2-4
2
2
2
14
14
2.5
2.5
2.5
FR-F740-00126-NA
M4
1.5
2-4
2-4
2
2
3.5
12
14
2.5
2.5
4
FR-F740-00170-NA
M4
1.5
5.5-4
5.5-4
3.5
3.5
3.5
12
12
4
4
4
FR-F740-00250-NA
M4
1.5
5.5-4
5.5-4
5.5
5.5
8
10
10
6
6
10
FR-F740-00310-NA
M5
2.5
8-5
8-5
8
8
8
8
8
10
10
10
FR-F740-00380-NA
M5
2.5
14-5
8-5
14
8
14
6
8
16
10
16
FR-F740-00470-NA
M6
4.4
14-6
14-6
14
14
14
6
6
16
16
16
FR-F740-00620-NA
M6
4.4
22-6
22-6
22
22
14
4
4
25
25
16
FR-F740-00770-NA
M6
4.4
22-6
22-6
22
22
14
4
4
25
25
16
FR-F740-00930-NA
M8
7.8
38-8
38-8
38
38
22
1
2
50
50
25
FR-F740-01160-NA
M8
7.8
60-8
60-8
60
60
22
1/0
1/0
50
50
25
FR-F740-01800-NA
M8
7.8
60-8
60-8
60
60
38
1/0
1/0
50
50
25
FR-F740-02160-NA
M10
14.7
100-10 100-10
80
80
38
3/0
3/0
70
70
35
FR-F740-02600-NA
M10
14.7
100-10 100-10 100
125
38
4/0
4/0
95
95
50
FR-F740-03250-NA
M10
14.7
100-10 100-10 125
125
38
MCM250 MCM250
120
150
70
FR-F740-03610-NA
M10
14.7
150-10 150-10 150
150
38
2
×
4/0
2
×
4/0
2
×
120
2
×
120
2
×
60
*1
For the FR-F740-01160 or less, the recommended cable size is that of the cable (e.g. HIV cable (600V class 2 vinyl-insulated cable)) with continuous
maximum permissible temperature of 75°C (167°F). Assumes that the ambient temperature is 50°C (122°F) or less and the wiring distance is 20m
(65.62feet) or less.
For the FR-F740-01800 or more, the recommended cable size is that of the cable (e.g. LMFC (heat resistant flexible cross-linked polyethylene
insulated cable)) with continuous maximum permissible temperature of 90°C (194°F). Assumes that the ambient temperature is 50°C (122°F) or less
and wiring is performed in an enclosure.
*2
For the FR-F740-00930 or less, the recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature
of 75°C (167°F). Assumes that the ambient temperature is 40°C (104°F) or less and the wiring distance is 20m (65.62feet) or less.
For the FR-F740-01160 or more, the recommended cable size is that of the cable (THHN cable) with continuous maximum permissible temperature
of 90°C (194°F). Assumes that the ambient temperature is 40°C (104°F) or less and wiring is performed in an enclosure.
*3
For the FR-F740-00930 or less, the recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature of
70°C (158°F). Assumes that the ambient temperature is 40°C (104°F) or less and the wiring distance is 20m (65.62feet) or less.
For the FR-F740-01160 or more, the recommended cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature
of 90°C (194°F). Assumes that the ambient temperature is 40°C (104°F) or less and wiring is performed in an enclosure.
*4
The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, and a screw for grounding.
CAUTION
· Tighten the terminal screw to the specified torque.
A screw that has been tighten too loosely can cause a short circuit or malfunction.
A screw that has been tighten 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.
(2) Notes on grounding
• Leakage currents flow in the inverter. To prevent an electric shock, the inverter and motor must be grounded. This
inverter must be grounded. Grounding must conform to the requirements of national and local safety regulations and
electrical codes. (JIS, NEC section 250, IEC 536 class 1 and other applicable standards)
• Use the dedicated ground terminal to ground the inverter.
(Do not use the screw in the casing, chassis, etc.)
• Use the thickest possible ground cable. Use the cable whose size is equal to or greater than that indicated in the above
table, and minimize the cable length. The grounding point should be as near as possible to the inverter.
To be compliant with the European Directive (Low Voltage Directive), ground the inverter according to
the instructions on page 128.
3
×
wire resistance[m
Ω
/m]
×
wiring distance[m]
×
current[A]
1000
Summary of Contents for FR-F700 Series
Page 134: ...MEMO ...
