16
3. Raise the IC socket lever, and insert the memory chip in the direction indi-
cated on the seal. The chip will have either 28 or 32 pins. Line it up with the
position shown on the seal.
4. Check to be sure that the memory chip is inserted securely, and then lock the
lever back into place.
Note Be sure to turn the power off before removing the memory chip.
2-2
Installation Environment
The NT20M and NT2000M PTs have strong environmental resistance and
high reliability, but you can maximize system reliability and make the most of
their functions by observing the following considerations during installation.
2-2-1
Installation Site
Avoid installing the PT in a location where any of the following conditions ex-
ist.
•
Ambient temperatures exceeding a range of 0
°
C to 45
°
C for the NT20M or
0
°
C to 50
°
C for the NT2000M.
•
Abrupt temperature changes or condensation.
•
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 (even though the front panel of the
NT20M is drip-proof and the entire NT2000M is waterproof).
2-2-2
Mounting Position
The PT employs a liquid crystal display, so the angle of vision should be con-
sidered when mounting. 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 0
°
C to 45
°
C for the NT20M and
0
°
C to 50
°
C for the NT2000M. Take the following factors into consideration.
•
Leave sufficient ventilation space.
•
Do not install directly above machinery that radiates a lot of heat (e.g.,
heaters, transformers, high-capacity resistors).
•
If the ambient temperature rises above 45
°
C, set up a fan or air conditioner.
PT
Control panel
Fan
Louver
Operation and Maintenance For safety during operation and maintenance, place the PT as far as possible
from high-voltage machinery and power equipment.
Installation Environment
Section 2-2
