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•
Relative humidity exceeding a range of 35% to 85%.
•
Corrosive or inflammable gasses.
•
Strong magnetism.
•
Excessive dust, salt, or iron dust.
•
Direct vibration or shock.
•
Direct sunlight.
•
Spray from water, oil, or chemicals (the front panel is basically drip-proof).
2-2-2
Mounting Position
Mounting Location
PTs with LCD display have a field of vision of 20
°
up, 30
°
down, and 30
°
right
and left. Install the Terminal at a height and direction that make it easy for the
operator to see.
Ambient Temperature
The ambient operating temperature range is 5
°
C to 40
°
C for liquid crystal
display PTs and 0
°
C to 50
°
C for EL display PTs. Take the following factors
into consideration.
•
Leave sufficient ventilation space.
•
Do not install directly above machinery that puts out a lot of heat (e.g.,
heaters, transformers, high-capacity resistors).
•
If the ambient temperature of a PT with LCD display rises above 40
%
C or
that of a PT with EL display rises above 50
%
C, set up a fan or air condition-
er.
PT
Control panel
Fan
Louver
Operation and Maintenance
For safety during operation and maintenance, place the Terminal as far as
possible from high-voltage machinery and power equipment.
Improving Noise Resistance
Do not install in a panel with high-voltage devices and install at least 200 mm
from electric power lines. To avoid noise interference from external devices,
separate them with a transformer or noise filter when wiring.
PT
200 mm min.
200 mm min.
Power line
Installation Environment
Section 2-2
Summary of Contents for NT600M Series
Page 1: ...NT600M Programmable Terminal Operation Manual Revised October 1997 ...
Page 2: ...iv ...
Page 4: ...vi ...