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6.2 Wiring
6.2.1 For the 18-point screw terminal block module
(1) Precautions
• Always use a solderless terminal of 0.8mm or less in thickness. Up to two solderless terminals can be
connected to one terminal block.
• A solderless terminal with insulation sleeve cannot be used for a terminal block. To prevent a short when
screws come loose, the junction of a solderless terminal and a cable should be covered up with a cable tag
or an insulation tube.
• Use the following wire for the terminal block.
• Use UL-approved R1.25-3 solderless terminal.
• Tighten the terminal block screws within the following specified torque range.
(2) Wiring method for the terminal block
For the wiring method, refer to the following.
MELSEC-L CPU Module User's Manual (Hardware Design, Maintenance and Inspection)
Applicable wire size Material Temperature rating
0.3 to 0.75mm
2
(22 to 18 AWG) (stranded wire)
Outside diameter: 2.8mm or less
Copper 75°C or more
Screw type Tightening torque range
Terminal block screw (M3) 0.42 to 0.58Nm
Terminal block mounting screw (M3.5) 0.66 to 0.89Nm