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Chapter 2 Installation and Wiring
(4) Recommended cable gauges, wiring accessories, and crimp terminals
Note: For compliance with CE and UL standards, see the safety precautions concerning EMC and the
compliance with UL and CUL standards under Safety Instructions.
The table below lists the specifications of cables, crimp terminals, and terminal screw tightening torques
for reference.
Motor
Applicable inverter
output
model
(kW)
5.5
SJ700B-055HFF
7.5
SJ700B-075HFF
11
SJ700B-110HFF
15
SJ700B-150HFF
18.5
SJ700B-185HFF
22
SJ700B-220HFF
30
SJ700B-300HFF
37
SJ700B-370HFF
45
SJ700B-450HFF
55
SJ700B-550HFF
Note: Cable gauges indicate those of HIV cables (maximum heat resistance: 75°C).
Please use the round type crimp terminals ( for the UL standard) suitable for the use electric wire when
*）
you connect the electric wire with the main circuit terminal stand. Please put on pressure to the crimp
terminals l with a crimp tool that the terminal stand maker recommends.
(5) Connecting the control circuit to a power supply separately from the main circuit
If the protective circuit of the inverter operates to open the magnetic contactor in the input power
supply circuit, the inverter control circuit power is lost, and the alarm signal cannot be retained.
To retain the alarm signal, connect control circuit terminals R0 and T0 to a power supply.
In details, connect the control circuit power supply terminals R0 and T0 to the primary side of the
magnetic contactor as shown below.
(Connection method)
Power-receiving specifications
400 V class model:
380 to 480 V (+10%, -15%)
(50/60 Hz ±5%),(537 to 678 VDC)
Note the following when connecting separate power supplies to control circuit power supply terminals
(R0 and T0) and main circuit power supply terminals (R, S, and T):
-
Use a cable thicker than 1.25 mm
-
Connect a 3 A fuse in the control circuit power supply line.( Tightening torque:1.2Nm,max
torque:1.4Nm)
-
If the control circuit power supply (connected to R0 and T0) is turned on earlier than the main circuit
power supply (connected to R, S, and T), ground fault is not checked at power-on.
-
When supplying DC power to the control circuit power supply terminals (R0 and T0), specify "00" as
the "a/b (NO/NC)" selection (function code C031 to C036) for intelligent output terminals ([11] to
[15]) and intelligent relay terminals (AL0, AL1, and AL2). If "01" is specified as the "a/b (NO/NC)"
selection, output signals may chatter when the DC power supply is shut off.
Gauge of power
2
line cable (mm
)
Grounding
(Terminals: R, S,
2
cable (mm
)
T, U, V, W, P, PD,
and N)
3.5
3.5
3.5
3.5
3.5
3.5
5.5
5.5
8
8
14
14
14
14
22
22
38
22
38
22
2
to connect the terminals R0 and T0 (terminal screw size: M4).
External braking
Size of
resistor across
Crimp
terminal
terminals P and
terminal
screw
2
RB (mm
)
3.5
M4
3.5
M5
3.5-5
3.5
M5
3.5-5
5.5
M6
R5.5-6
8
M6
14
M6
14
M6
―
M6
M8*)
―
―
M8*)
J51
2 - 18
Applicable device
Tightening
torque (N-m)
Earth-leakage
breaker (ELB)
2-4
1.2(MAX1.8)
EX50C (30A)
EX50C (30A)
2.4
2.4
EX50C (30A)
4.5
EX50C (30A)
8-6
4.5
EX60B (60A)
14-6
4.5
EX60B (60A)
14-6
RX100 (75A)
4.5
22-6
4.5
RX100 (100A)
38-8
RX100 (100A)
8.1
38-8
8.1
RX225B (150A)
① Remove the connected cables.
② Remove the J51 connector.
③ Connect the control circuit power
supply cables to the control
circuit power supply terminal
block.
Magnetic
contactor
(MC)
HK20
HK20
HK25
HK35
HK35
HK50
HK50
H65
H80
H100
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