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7
Precautions for Safe Use
• When unpacking the NP and its peripheral devices, check for any external damage. Shake the
product gently to check for loose/broken parts or any other abnormal sounds.
• Mount the NP onto a panel with a thickness of 1.6 to 2.5mm. Make sure that the panel is clean, not
warped, and offers sufficient mounting strength.
• To keep adequate waterproof and dustproof performance, tighten the mounting brackets equally
with 0.6 to 0.7N
•
m of torque. The front sheet on the panel possibly becomes warped if the torque is
more than the specified limit or not equal.
• Keep metal waste particles from entering the unit, when you work on the panel.
• Do not connect an AC power supply to the power terminals.
• Use a DC power supply with low voltage fluctuation.
• Ground correctly to prevent malfunctions caused by noise.
• Turn OFF the power to the NP before you connect or disconnect a cable.
• Tighten the connector screws after you connect the cable.
• A maximum tensile load of the connectors is 30N. Do not apply a load more than this value.
• Check system safety before you turn the power ON/OFF.
• Do not press touch switches with a force greater than 30N.
• Before pressing a touch switch, check system safety.
• Do not press touch switches in rapid succession. The NP possibly does not accept every input
data. Make sure that each input command is accepted before proceeding to the next command.
• Do not press touch switches when the backlight is not lit or when there is no display.
• Use a twisted pair cable, more than 2mm
2
in diameter to connect the power.
• Use an OMRON PT-PLC connection cable. Do not use other cables. It possibly causes malfunction.