PPC902CE101 PPC905AE101 PPC907BE ABB Optical Fiber Communication Board

PPC902CE101 PPC905AE101 PPC907BE ABB Optical fiber communication board

PPC902CE101 PPC905AE101 PPC907BE ABB Optical fiber communication board

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When planning a control system installation, the following points must be

considered:

• Temperature:

– It is important to note the ambient air temperature as well as that within

enclosures. Lower temperatures increase system reliability and

availability.

– If maximum permitted temperatures are exceeded, the anticipated lifetime

of wet, electrolytic capacitors and most semiconductors will be greatly

reduced.

• Vibration:

– Regarding routine vibration it is recommended that floor

enclosures/cabinets stand on a sound, level surface, and that wall

enclosures/cabinets are mounted on sound, vertical walls.

– Should the AC 800M system be installed in a control room, adjacent to

large machinery such as shakers or large presses where frequent major

vibration is expected, then shock absorbers or an isolation pad may be

required to protect system equipment. Shock absorbers will normally

protect the equipment from sustained low-level vibrations that are

perceivable, but not unduly excessive.

– It is recommended that additional fastening screws be used to prevent

vibration-generated noise.

– If vibrations or shock are a major factor, further consideration must be

given to more extreme measures to reduce the problem.

• Cooling:

– Cooling the electronics is achieved by self-convection. The AC 800M

units are designed for wall mounting and must be mounted horizontally

onto a DIN-rail to avoid generating high temperatures within the units.

– ABB cabinets (RM550 or RE820) may be used up to an ambient

temperature of 40°C (104°F), with no requirement for additional cooling

equipment, such as fans.