Omron NT620C, Руководство по эксплуатации

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3 Safety Precautions
xiv
Static electricity, or noise from other equipment
Strong electromagnetic fields
Nearby power cables
Potential exposure to radioactivity
S
Carry out grounding correctly in order to prevent misoperation due to noise.
S
When installing the PT in the operation panel, observe the following points.
– Do not install the unit in locations directly exposed to chemicals or steam, or
locations where there is excessive dust.
– Do not install the unit at location where the ambient temperature goes out-
side the range 0 to 45
_
C in the case of the NT620S and 0 to 40
_
C in the case
of the NT620C, or where the relative humidity goes outside the range 35 to
85% RH.
If the ambient temperature exceeds the range indicated above, install a fan
or an air conditioner.
– Do not install the unit directly above equipment that generates a lot of heat
(heaters, transformers, large capacity resistors, etc.)
S
Take the following points into account in order to prevent noise.
1. Avoid installing the unit in panels in which high-voltage equipment is also
installed.
2. Install the unit at a distance of at least 200 mm from power lines.
3. If the unit is installed next to equipment that generates a strong electric or
magnetic field (solenoids, etc.), provide a gap of at least 40 mm.
S
Provide sufficient space for ventilation
S
Do not install the unit in locations where it will be subject to strong vibration or
severe shock.
S
To ensure that the unit can be operated and maintained without difficulty, install
it at a distance from high-voltage equipment and power equipment.
S
After changing the switch settings, always press the reset switch or turn the
power off and back on.
Otherwise the system will not operate as exported.
S
Confirm system safety before turning the power ON/OFF or resetting.
Otherwise the system may operate unpredictably.
S
Check that the current capacity of the equipment to be supplied is within 150
mA before using the +5 V output of pin No.6. The +5 V output of NT620S/
NT620C de5 V
"
5% and 150 mA maximum.
Do not use the +5 V output of the RS-232C interface unit.
S
Press touch switches with a force of no greater than 20 N. Applying higher force
may cause glass to break, cause injuries, and prevent operation.
S
If touch switches are pressed in rapid succession, their inputs may not be suc-
cessfully received.