xiii
Precautions for Safe Use
• When unpacking the Units and peripheral devices, check carefully for any external scratches or
other damage. Also, shake the products gently and check for any abnormal sound.
• Always install the Unit in the control panel.
• The mounting panel must be between 1.6 and 2.5 mm thick. Tighten the Mounting Brackets evenly
to a torque of 0.7 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 terminals.
• Use reinforced insulation or double insulation for the DC power supply with minimal fluctuation volt-
age to the Unit. Ensure that a stable power output can be provided even if a 10-ms interruption
occurs at the input. Tighten the terminal block screws to a torque of 0.51 N·m.
Rated power supply voltage: 24 VDC (Allowable range: 21.6 to 27.6 VDC)
Capacity: 12 W minimum
• Do not perform a dielectric voltage test.
• Ground the Unit correctly to prevent malfunctions caused by noise.
• Do not touch the surface of the circuit board or the components mounted on it with 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 5VDC
power supply from the pin 6 of the serial port COM1 connectors. The 5VDC output of the Unit is
250 mA maximum at 5 V
±5%.
• Turn OFF the power supply before connecting or disconnecting cables.
• The tightening torque of the serial port COM1 is 0.6 N·m.
The tightening torque of the serial port COM2 is 0.2 N·m.
• 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.
• 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.
• Start actual system application only after sufficiently checking screen data, macros, and the opera-
tion of the program in the host.
• To ensure the safety of the system, incorporate a program that can check that the Unit is properly
operating.
• Before initializing screen data, confirm that existing data is backed up at a computer.
• To use numeric input functions safely, always make maximum and minimum limit settings.
• An image will be burnt onto the screen if the same pattern is continuously displayed for a long period
of time (24 hours or longer as a guideline). To prevent screen burn, use a screen saver or switch dis-
plays periodically.
• Commercially available and recommended USB Hubs do not have the same specifications as the
NP-series PT. Normal operation may not be possible in environments subject to noise or static elec-
tricity. When using USB Hubs, be sure to provide sufficient measures to prevent noise and static
electricity, or install in a location that is not subject to noise or static electricity.
• Do not connect the USB connector to any device that is not applicable.
• Before connecting the USB connector to a device, make sure that the device is free of damage.
• Do not press the touch switch with a force greater than 30 N.
• Confirm the safety of the system before pressing touch switches.
• Signals from the touch switches may not be input if the switches are pressed consecutively at high
speed. Confirm each input before proceeding to the next one.
To Next Page
Loading...
Need help?
General
