A3-1
IM 34M06C11-01E
A3.
Installation and Wiring
A3.1
Environmental Conditions for Installation
within a Panel Enclosure
Refer to the following considerations when designing the interior of the panel enclosure
to ensure operability, maintainability, and environmental durability.
Figure A3.1 shows a typical example of a layout within a panel enclosure.
Temperature Considerations
- Provide good ventilation to prevent heat from being trapped inside the panel
enclosure. If two or more FA-M3 controller units are installed vertically within the
same panel enclosure, provide a clearance of at least 8cm between them.
- Ensure that the upper and lower vents near the FA-M3 controller are not blocked
either by wiring or otherwise.
- Avoid mounting the controller directly above any equipment that generate large
amounts of heat.
- If there will be times where the temperature inside the panel enclosure reaches
55°C (131°F) or higher, use a fan or an air conditioner for cooling. Consider
providing a safety mechanism such as a temperature sensor inside the panel
enclosure to raise an alarm upon failure of the fan or air conditioner as such failures
may adversely affect the system. Conversely, if temperature is likely to fall below
0°C (32°F) during morning startup, include a small heater, lamp, or other heat
source to preheat the panel enclosure.
Figure A3.2 shows examples of cooling systems.
Humidity Considerations
Condensation may occur due to sudden temperature changes resulting from the turning
on and off of an air conditioner. If condensation occurs on any of the circuit boards, the
instrument may malfunction due to shorted internal circuitry. If there is a risk of
condensation, either keep the power turned on at all times, or use a space heater or
other alternative means to keep the controller constantly preheated.
Vibration and Shock Considerations
- As a countermeasure to keep shock or vibration below the specified limit, place the
panel enclosure as far away as possible from any source of vibration or shock, or
place the panel enclosure on vibration-proof rubber.
- As a countermeasure to keep mechanical shock from electromagnetic switches
mounted inside the panel enclosure below the specified limits, install such devices
on vibration-proof rubber.
Note
Be wary of any vibration and shock to the hard disk module.
Any mechanical vibration or shock occurring during transportation of equipment or
facilities into which the FA-M3 has been assembled must also be within the
specifications limits. The specification range for vibration and shock is especially
stringent for the hard disk module, as compared to other modules. When transporting,
use the same packaging in which the product was originally shipped.
Содержание FA-M3V e-RT3 Plus
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