19
3P184443-12N
English
[PRECAUTIONS]
Observe the notes mentioned below when wiring to the power supply terminal block and terminal block
for remote controller.
Precautions to be taken for power supply wiring
Use a round crimp-style terminal for connection to the power supply terminal block. If it cannot be used
due to unavoidable reasons, be sure to observe the following instructions:
Be sure to peel off the sheath of power supply wiring more than 3-1/4 in.
(Refer to Fig. 26)
Attach insulation sleeve
Power supply wiring and ground wire
Round crimp-style terminal
3-1/4 in.
or more
Fig. 26
When none is available, follow the instructions below.
Do not connect wires of different gauge to the same grounding terminal.
Connect wires of the same
gauge to each side.
Do not connect wires of
the same gauge to one
side.
Do not connect wires of
different gauges.
Looseness in the connection may deteriorate protection.
Tightening torque for the terminal blocks
•
Use the correct screwdriver for tightening the terminal screws. If the blade of screwdriver is too small,
the head of the screw might be damaged, and the screw will not be properly tightened.
•
If the terminal screws are tightened too hard, screws might be damaged.
•
Refer to the table below for the tightening torque of the terminal screws.
Size
Tightening torque (ft-lbf)
Terminal block for remote controller (6P)
M3.5
0.58 – 0.72
Power supply terminal block (3P)
M4
0.87 – 1.06
• For remote controller wiring, refer to the “INSTALLATION MANUAL OF REMOTE CONTROLLER.”
attached to the remote controller.
•
Never connect power supply wiring to the terminal block for remote controller. This could
damage the entire system.
• Use only specified wire and tightly connect wires to terminals. Be careful wires do not place external
stress on terminals. Keep wiring in neat order and arrange so as not to obstruct other equipment
causing the control box cover to pop open. Make sure the cover closes tight. Incomplete connections
could result in overheating and, in the worst case, electric shock or fire.
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