2-44
2-2-5 Wiring Control Circuit Terminals
A control signal line must be 50 m maximum and separated from power lines. The fre-
quency reference must be input to the Inverter through twisted-pair wires.
H Wire Size and Round Solderless Terminals
Use thick wires to prevent voltage drops if the wires are long.
D Wires for All Inverter Models
Terminal Terminal
screw
Wire thickness (mm
2
) Type
3G3FV
1 to 43
3G3HV
S1, S2, S3, S4, S5, S6, SC,
FV, FI, FS, FC, AM, AC, M1,
M2, MA, MB, MC
--- Stranded wire: 0.5 to 1.25
Single wire: 0.5 to 1.25
Shielded, twisted-pair wire
Shielded,
polyethylene-covered, vinyl
sheath cable
E (G) M3.5 0.5 to 2
D Solderless Terminals for Control Circuit Terminals
The use of solderless terminals for the control circuit terminals is recommended because solderless
terminals are easy to connect securely.
Wire thickness Model d1 d2 Manufacturer
0.5 mm
2
A1 0.5-8WH 1.00 2.60
Phoenix Contact
0.75 mm
2
A1 0.75-8GY 1.20 2.80
1 mm
2
A1 1-8RD 1.40 3.00
1.5 mm
2
A1 1.5-8BK 1.70 3.50
Note Do not solder wires with the control circuit terminals if wires are used instead of solderless termi-
nals. Wires may not contact well with the control circuit terminals or the wires may be discon-
nected from the control circuit terminals due to vibration if the wires are soldered.
D Round Solderless Terminals for Ground Terminal
Wire thickness
(mm
2
)
Terminal
screw
Size
0.5
M3.5
1.25 to 3.5
0.75 1.25 to 3.5
1.25 1.25 to 3.5
2 2 to 3.5
Installation Chapter 2
d1 dia.
d2 dia.
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