Safety Precautions - NF DP Series Instruction Manual

For safe use, ensure to obey the following warnings and considerations.
We are not responsible for damage resulting from failure to obey these warnings and considerations.
This product is an insulation Class I device (with a protective conductor terminal) complying with
the JIS and IEC standards.
 Ensure you obey the instructions in this instruction manual.
This instruction manual contains instructions for safe operation and use of this product.
Before using this product, please read this manual first.
All the warning items contained in this instruction manual are intended for preventing risks that may
lead to serious accidents. Ensure to obey them.
 Ensure to ground.
Ensure to connect the protective conductor terminal of the power input terminal of this product to an
earth ground so that ground resistance is 100  or less. If the product is not certainly grounded, an
electric shock might occur.
To prevent electric shock, ensure that the protective grounding conductor is connected before you
connect a cable to the power input terminals L, L1, L2, L3, and N.
For grounding, use the supplied power cable or an equivalent cable whose diameter is same or
greater.
 Check the power supply voltage.
This product operates on the power supply voltage specified in "2.4 Grounding and Power
Connections". Before connecting this product to a power supply, make sure that the voltage of
distribution board conforms to the power supply voltage rating of the product. The input voltage is
noted as line voltage in three-phase four-wire input, unless otherwise noted.
 If you notice anything strange
If this product produces smoke, unusual odor, or strange sound, immediately cut the power to the
product and stop using it.
Should you encounter any anomaly like above, immediately contact us or our agent. Never use it
until the repair is completed.
 Do not operate in an explosive atmosphere.
An explosion or other such hazard may result.
 Do not remove the cover.
This product has high-voltage portions inside. Never remove the cover.
When inspection into the inside of the product is needed, never allow anybody to touch the innards
except our certified service engineers.
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 Safety Precautions 
PROGRAMMABLE AC POWER SOURCE