Owner's manual

Chapter 2 Installation Procedure
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2.6 Mounting Procedure
2.6.1 Operating environment precautions
This unit is a precision instrument and you must take care in choosing the
operating environment.
■ Ambient environments
Do not install the unit in place as shown below
• The unit is exposed to direct sunlight, or the ambient temperature may fall
below 0°C (32°F) or exceed 50°C (122°F);
• The relative humidity may exceed the range of 35 to 85%, or condensation may
occur due to rapid temperature changes;
• Corrosive gas or inflammable gas is present, or a high level of dust, salt, iron
particles or soot is present;
• The unit is subject to vibration or impact;
•Water, oil or chemicals may splash the unit;
•A strong magnetic field or electric field is generated.
• Do not place the cables in the same conduit as a power cable.
■ In-panel installation
To mount the N-400 in a panel, carefully observe the following instructions.
• Provide enough ventilation space.
• If the ambient temperature may fall below 0°C (32°F) or exceed 50°C (122°F),
provide a fan or air conditioner.
• Do not mount this unit in a panel where a high voltage device is installed.
• Place this unit as far away from power lines as possible.
CAUTION