3 Installation and Wiring
3 - 4
NA-series Programmable Terminal Hardware(-V1) User’s Manual (V125)
3-3 Installing NA Units
This section describes how to install an NA Unit.
Precautions for Correct Use
• Follow the instructions in this manual to correctly perform installation.
• Do not install or store the NA Unit in any of the following locations:
• Locations subject to severe changes in temperature
• Locations subject to temperatures or humidity outside the range specified in the specifica-
tions
• Locations subject to condensation as the result of high humidity
• Locations subject to corrosive or flammable gases
• Locations subject to strong shock or vibration
• Locations outdoors subject to direct wind and rain
• Locations subject to strong ultraviolet light
• Locations subject to dust
• Locations subject to direct sunlight
• Locations subject to splashing oil or chemicals
• Take appropriate and sufficient countermeasures when installing systems in the following
locations:
• Locations subject to static electricity or other forms of noise
• Locations subject to strong electric field or magnetic field
• Locations close to power supply lines
• Locations subject to possible exposure to radioactivity
• Mounting Panel
• To conform to UL Type 1 standards, the mounting panel thickness must be 1.6 to 6.0 mm.
• To conform to UL Type 4X standards, the thickness must be 1.6 to 4.5 mm.
To conform to UL Type 4X standards, always use the NA5-W-V1 with a
High-pressure Waterproof Attachment (PWA). If you do not use a PWA, there is a risk of
water entry, which may cause severe equipment damage.
Do not use the NA Unit outdoors.
• Tighten the Mounting Brackets evenly to a torque of between 0.5 and 0.6 N·m to maintain
water and dust resistance. If the tightening torque exceeds the specified range or the tight-
ening is not even, deformation of the front panel may occur. Make sure the panel is not
dirty or warped, that the front surface is smooth, and that the panel is strong enough to
hold the NA Unit.
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