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3
Safety Precautions
xiii
WARNING:
S
Do not disassemble the unit or touch parts inside while the power in ON.
You could sustain an electric shock.
S
Turn the backlight off before replacing it. Otherwise you could sustain an elec-
tric shock.
Caution:
S
Be sure to switch the power OFF before replacement.
S
Do not use the PT touch switch input functions for applications where danger to
human life or serious property damage is possible, or for emergency switch ap-
plications.
S
On unpacking the NT620S/NT620C, check its external appearance and con-
firm that there is no damage. Also confirm that there is no abnormal noise on
shaking the NT620S/NT620C lightly.
The product may malfunction if it is damaged.
S
Before inserting or removing the connectors, make sure that the NT620S/
NT620C and the PC are turned OFF.
S
The thickness of applicable operation panel is 1.6 mm to 4.8 mm.
All fittings must be tightened uniformly to a torque of 0.5 to 0.6 N
@
m in order to
ensure water- and dust-resistance. The panel must not be soiled or warped,
and must be able to support an installation that will remain secure and strong.
S
During work at the panel, take care to ensure that no metal scraps enter the
unit. Otherwise, the product may malfunction.
S
After connecting the communication cable, be sure to lock the connectors with
the screws. Otherwise the cable may disconnect, causing operation to fail.
S
The cable’s tensile load is 30 N. Do not subject it to loads greater than this.
Otherwise a discontinuity may occur, causing operation to fail.
S
Do not install the NT620S/NT620C at sites subject to the following conditions.
Otherwise, the product may malfunction.
Severe temperature variations
Temperatures or humidities outside the ranges stated in the specifications
High humidity, condensation
Splashing chemical agents
Severe oil splashing
Corrosive or flammable gases
Strong vibrations or shocks
Direct exposure to wind and rain (outdoor sites)
Strong ultra-violet irradiation
S
Take adequate measures to ensure shielding if the NT620S/NT620C is used at
a location subject to any of the following conditions. Otherwise, the product
may malfunction.
Summary of Contents for NT620C
Page 1: ...Cat No V033 E1 5 Programmable Terminals NT620S 620C OPERATION MANUAL...
Page 2: ...NT620S 620C Programmable Terminals Operation Manual Revised April 2001...
Page 3: ...iv...
Page 5: ...vi...
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