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5.3. Unit wiring
• Before attaching the cable to terminal block.
5.3.1. Power supply cable
Earth (ground)
cable
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after
looping it around the end of the cable.
(2) Use the specifi ed wires, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw heads may be
damaged and prevent the screws from being properly tightened.
(4) Do not tighten the terminal screws too much, otherwise, the screws may break.
(5) See the table for the terminal screw tightening torques.
(6) Please do not fi x 2 power supply cables with 1 screw.
Strip 25 mm
Screw with
special washer
Cable
Cable end (Loop)
Terminal block
When using solid core cables, do not use the attached ring terminal. If you use the
solid core cables with the ring terminal, the ring terminal's pressure bonding may
malfunction and cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the fi gure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the
cables do not come loose.
(3) Use the specifi ed cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws.
Do not use a screwdriver that is too small, otherwise, the screw heads may be
damaged and prevent the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not fi x 2 power supply cables with 1 screw.
Strip 10 mm
Screw with
special washer
Cable
Ring terminal
Terminal block
En-7
200 mm
220 mm
Loop
Screw with
special washer
Cable end (Loop)
Cable
WARNING
Ring terminal
Sleeve
Screw with
special washer
Ring terminal
Cable
Use ring terminals and tighten the terminal screws to the specifi ed torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the unit.
Tightening torque
M4 screw
(Power supply /L, N, GND)
5.3.2. Transmission cable
Shielded cable
(no fi lm)
• Connect transmission cables as shown in Fig. C.
Fig. C
GOOD
Different diameter
Tighten the terminal screws to the specifi ed torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
Tightening torque
M4 screw
(Transmission /X1, X2)
To peel the fi lm from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening
the screw. On the other hand, an undertightened screw can cause faulty contact, which
will lead to a communication failure.
WARNING
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
40 mm
75 mm
PROHIBITED
Connect to 1 side
WARNING
0.8 to 1.2 N·m
(8 to 12 kgf·cm)
CAUTION