2
-22
Wiring Control Circuit Terminals
Wire Sizes
For remote operation using analog signals, keep the control line length between the Analog Operator or oper-
ation signals and the Inverter to 50 m or less and separate the lines from high-power lines (main circuits or
relay sequence circuits) to reduce induction from peripheral devices.
When setting frequencies from an external frequency setter (and not from a Digital Operator), used shielded
twisted-pair wires and ground the shield to terminal E (G), as shown in the following diagram.
Fig 2.15
Terminal numbers and wire sizes are shown in Table 2.7.
* 1. Use shielded twisted-pair cables to input an external frequency reference.
* 2. Refer to Table 2.3 Close-loop Connector Sizes (JIS C2805, 200-V and 400-V class) for suitable closed-loop crimp terminal sizes for the wires.
* 3. We recommend using straight solderless terminal on signal lines to simplify wiring and improve reliability.
Table 2.7 Terminal Numbers and Wire Sizes
Terminals
Termi-
nal
Screws
Tightening
Torque
(N•m)
Possible
Wire Sizes
mm
2
(AWG)
Recom-
mended
Wire Size
mm
2
(AWG)
Wire Type
FM, AC, AM, SC, A1,
A2, +V, –V, SN, SC, SP,
S1, S2, S3, S4, S5, S6,
S7, MA, MB, MC, M1,
M2, M3, M4
R+, R-, S+, S-, IG
Phoenix
type
0.5 to 0.6
Single wire
*3
:
0.14 to 2.5
Stranded
wire:
0.14 to 1.5
(26 to 14)
0.75
(18)
• Shielded, twisted-pair wire
*1
• Shielded, polyethylene-cov-
ered, vinyl sheath cable
(KPEV-S by Hitachi Electrical
Wire or equivalent)
E (G)
M3.5
0.8 to 1.0
0.5 to 2
*2
(20 to 14)
1.25
(12)
External
frequency
reference
0 to +10 V
4 to 20 mA
Shield terminal
Speed setting power supply, +15 V 20 mA
Master speed reference, 0 to +10 V (20 k
Ω
)
Master speed reference, 4 to 20 mA (250
Ω
)/0 to +10 V (20 k
Ω
)
E (G)
2 k
Ω
2 k
Ω