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.
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