Omron ns series Operation Manual page 12

Precautions for Safe Use
Precautions for Safe Use
•
When unpacking the Units, check carefully for any external scratches or other
damage. Also, shake the Units gently and check for any abnormal sound.
•
The PT must be installed in a control panel.
• The mounting panel must be between 1.6 and 4.8 mm thick. Tighten the Mounting
Brackets evenly to a torque of between 0.5 and 0.6 N·m to maintain water and dust
resistance. Make sure the panel is not dirty or warped and that it is strong enough to
hold the Units.
•
Do not let metal particles enter the Units when preparing the panel.
• Do not connect an AC power supply to the DC power input terminals.
• Use a DC power supply with minimal voltage fluctuation that provides a stable output
even if the power supply input is interrupted for 10 ms. The DC power supply must
also have reinforced or double insulation.
Rated power supply voltage: 24 VDC (Allowable range: 20.4 to 27.6 VDC)
Capacity:
•
Do not perform a dielectric voltage test.
•
Use a twisted-pair cable with a cross-sectional area of at least 2 mm
power terminals and always use M3.5 crimp terminals. Tighten the terminal screws to
a torque of 0.8 N·m. Make sure the screws are properly tightened.
• Ground the Unit correctly to prevent operational errors caused by noise.
•
Do not touch the surface of the circuit board or the components mounted on it you're
your bare hands. Discharge any static electricity from your body before handling the
board.
• Confirm that the current capacity of the connected device is 250 mA or less before
using the 5-V power supply from pin 6 of the RS-232C connector. The 5-V output from
the PT is 250 mA max. at 5 V ±5%.
•
Turn OFF the power supply before connecting or disconnecting cables.
•
Always tighten the connector screws after connecting communications cables.
•
The maximum tensile load for cables is 30 N. Do not apply loads greater than this.
• Confirm the safety of the system before turning ON or OFF the power supply or before
pressing the reset button.
•
The whole system may stop depending on how the power supply is turned ON or OFF.
Turn ON or OFF the power supply according to the specified procedure.
•
After changing the settings of the DIP switch, always turn the power supply OFF and
ON or reset the PT.
•
Do not perform the following operations while the Memory Card is being accessed:
• Do not remove the Memory Card while power is being supplied to it. Always follow the
specified procedure when removing the Memory Card.
•
To ensure system safety, incorporate a program that periodically calls PT operation
bits from the host side to check that the PT is properly operating.
•
Start actual system application only after sufficiently checking screen data, macros,
and the operation of the program in the host.
•
Do not press a touch switch with a force greater than 30 N.
•
Do not operate a touch switch using a screwdriver or other tool.
•
Confirm the safety of the system before pressing a touch switch. Do not press touch
10
NS15: 45 W min.
NS12, NS10, or NS8: 25 W min.
•
Turning OFF the power supply to the PT
•
Pressing the PT's reset switch
•
Removing the Memory Card
2
to connect to the