Omron EasySpeed 3G3JE, User Manual, Page: 38 / 133

Chapter 2
2-16
Design
2-2-4 Wiring Control Circuit Terminals
■
Control Circuit Terminal Connections
• Use insulated wiring with a temperature rating of 80
°
C min. for control circuit terminals.
• A control signal line must be 50 m maximum and separated from power lines.
• Shielded, twisted-pair cable must be used for RS-485 signal lines, and the lines must be no more
than 500 m long.
• Do not solder the wires to the control circuit terminals. The wires may not contact well with the con-
trol circuit terminals if the wires are soldered.
• When solderless terminals are not used, the end of each wire for the control lines must be stripped
for approximately 6 mm.
• Cover the shield with tape so that the shield will not come into contact with other signal wires or
machines.
• To simplify wiring and improve reliability, it is recommended that solderless terminals be attached to
control circuit lines.
● Applicable Wire Sizes, Terminal Screws, and Screw Tightening Torque
A maximum of two wires can be connected to each terminal.
1. When connecting one wire to each terminal, use the following wire size.
2. When connecting two wires to each terminal, use the following wire size.
● Solderless Terminal Size
To simplify wiring and improve reliability, it is recommended that solderless terminals be attached to
control circuit lines. Use solderless terminals that match the size of the wire being used.
A maximum of two solderless terminals can be connected to each terminal.
Terminal
screw size
Tightening
torque
(N·m)
Wire
Wire size (mm
2
)
Recommended
wire size (mm
2
)
Cable
M3 0.5 to 0.6 Solid wire 0.2 to 1.5
(AWG24 to AWG16) 0.75 (AWG18) Polyethylene-insulated
vinyl-sheath cable
Stranded
wire 0.2 to 1.5
(AWG24 to AWG16) Shielded twisted-pair
cable
0.2 to 1.5
(AWG24 to AWG16)
Terminal
screw size
Tightening
torque
(N·m)
Wire
Wire size (mm
2
)
Recommended
wire size (mm
2
)
Cable
M3 0.5 to 0.6 Solid wire 0.2 to 0.75
(AWG24 to AWG18) 0.5 (AWG20) Polyethylene-insulated
vinyl-sheath cable
Stranded
wire 0.2 to 0.75
(AWG24 to AWG18) Shielded twisted-pair
cable
0.2 to 0.75
(AWG24 to AWG18)