Restricted
region (shaded
portion)
Wiring
• Double-check all switches and other settings and double-check all wiring to make sure that they are
correct before turning ON the power supply.
• Use the correct wiring parts and tools when you wire the system.
•
Do not pull on the cables or bend the cables beyond their natural limit. Also, do not place heavy
objects on top of the cables or other wiring lines. Doing so may break the cable.
• When wiring or installing the Units, do not allow metal fragments to enter the Units.
• Do not press the flat-blade screwdriver straight into the release holes on a screwless clamping ter-
minal block. Doing so may damage the terminal block.
• When you insert a flat-blade screwdriver into a release hole on a screwless clamping terminal block,
press it down with a force of 30N or less. Applying excessive force may damage the terminal block.
• Do not incline or twist the flat-blade screwdriver while it is in a release hole on a screwless clamping
terminal block. Doing so may damage the terminal block.
• If you use reed switches for the input contacts for AC Input Units, use switches with an allowable
current of 1 A or greater
. If the capacity of the reed switches is too low
, inrush current may fuse the
contacts.
•
Use crimp terminals for wiring the M3 screw terminal blocks. Do not connect bare stranded wires
directly to the M3 screw terminal blocks.
Precautions for Safe Use
20
NX-series Analog I/O Units User’s Manual for High-speed Analog Input Units (W592)
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